Friday, December 24, 2010

Occultation prediction for DELHI India for January 2011

Occultation prediction for DELHI India
Visible with moderate telescope of 6" (15cm) dia.

    day  Time   P   Star  Sp  Mag  Mag    % Elon Sun  Moon   CA   PA  VA
  m  d  h  m  s      No  D     v    r V  ill     Alt Alt Az   o    o   o

Jan 14 14 57 35 D     435 F5  5.8  5.6S  70+ 114     78 234  88N  73  24
47 Arietis
Jan 15 17 54 59 D     584cB9  6.1  6.0v  80+ 127     53 272  68N  58 345
Jan 16 19 23 45 D     742SG8  5.8  5.2   88+ 139     46 276  75S 100  27
Jan 17 22 27 19 D     916SG7  4.3        95+ 153     19 287  65N  65 358
Jan 18 15  0 19 D    1047SA2  5.3  5.3   98+ 164     51  90  38S 144 215
Jan 20 21 38 28 R    1344 K5  6.5  5.7   99- 166     61 244  78S 290 236
Jan 22 17 32 45 R    1566cK4  6.3  5.6   88- 140     28 103  78S 286 345
Jan 22 22  6 48 m    1582wA3  6.4  6.3   87- 138     62 196   9S 217 203
Jan 23  0 41 27 R    1587DF2  5.9        87- 137     38 246  89S 298 245

Saturday, December 18, 2010

Saturday, November 13, 2010

Finder Charts for (933) Susi / HIP 54998 event on 2010 Nov 29, 21:50 UT

 Wide Field

 15 Deg
5 Deg
 2 Deg
30 min

Path Coordinates: Occultation of HIP 54998 by 933 Susi on 2010 Nov 29





Path Coordinates:
Occultation of HIP  54998 by 933 Susi on 2010 Nov 29 
                  Centre              Star  Star   Sun      Path Limits           Error Limits
  E. Longitude   Latitude      U.T.    Alt    Az   Alt    Limit 1    Limit 2    Limit 3    Limit 4
      o  '  "     o  '  "    h  m  s     o     o     o    o  '  "    o  '  "    o  '  "    o  '  "
                                                         Latitude   Latitude   Latitude   Latitude

     68  0  0    28  2 48   21 46 57    24    98   -55   27 56 45   28  8 51   27 38 29   28 27  9
     69  0  0    27 59 15   21 46 59    24    98   -54   27 53 12   28  5 18   27 34 55   28 23 36
     70  0  0    27 55 23   21 47  0    25    99   -54   27 49 20   28  1 26   27 31  3   28 19 45
     71  0  0    27 51 13   21 47  2    26    99   -53   27 45  9   27 57 16   27 26 52   28 15 35

     72  0  0    27 46 44   21 47  4    27   100   -52   27 40 41   27 52 48   27 22 23   28 11  7
     73  0  0    27 41 58   21 47  6    28   100   -51   27 35 54   27 48  1   27 17 36   28  6 21
     74  0  0    27 36 52   21 47  7    29   101   -50   27 30 48   27 42 57   27 12 30   28  1 17
     75  0  0    27 31 29   21 47  9    30   101   -49   27 25 25   27 37 33   27  7  5   27 55 54
     76  0  0    27 25 47   21 47 11    31   102   -48   27 19 43   27 31 52   27  1 23   27 50 13

     77  0  0    27 19 47   21 47 13    32   102   -47   27 13 43   27 25 52   26 55 22   27 44 14
     78  0  0    27 13 29   21 47 16    32   103   -46   27  7 24   27 19 34   26 49  3   27 37 57
     79  0  0    27  6 53   21 47 18    33   103   -45   27  0 48   27 12 58   26 42 25   27 31 22
     80  0  0    26 59 58   21 47 20    34   104   -45   26 53 53   27  6  4   26 35 30   27 24 28
     81  0  0    26 52 45   21 47 22    35   104   -44   26 46 40   26 58 51   26 28 16   27 17 17

     82  0  0    26 45 15   21 47 25    36   105   -43   26 39  9   26 51 21   26 20 44   27  9 47
     83  0  0    26 37 26   21 47 27    37   106   -42   26 31 19   26 43 32   26 12 54   27  1 59
     84  0  0    26 29 18   21 47 29    38   106   -41   26 23 12   26 35 25   26  4 46   26 53 53
     85  0  0    26 20 53   21 47 32    39   107   -40   26 14 47   26 27  0   25 56 19   26 45 29
     86  0  0    26 12 10   21 47 34    40   107   -39   26  6  3   26 18 18   25 47 35   26 36 47

     87  0  0    26  3  9   21 47 37    41   108   -38   25 57  2   26  9 17   25 38 33   26 27 48
     88  0  0    25 53 51   21 47 40    42   108   -37   25 47 43   25 59 58   25 29 13   26 18 30
     89  0  0    25 44 14   21 47 42    42   109   -36   25 38  6   25 50 22   25 19 35   26  8 55
     90  0  0    25 34 19   21 47 45    43   109   -35   25 28 11   25 40 28   25  9 39   25 59  2
     91  0  0    25 24  7   21 47 48    44   110   -34   25 17 59   25 30 16   24 59 25   25 48 51

     92  0  0    25 13 38   21 47 51    45   111   -34   25  7 29   25 19 47   24 48 54   25 38 23
     93  0  0    25  2 51   21 47 54    46   111   -33   24 56 41   25  9  0   24 38  6   25 27 37
     94  0  0    24 51 46   21 47 57    47   112   -32   24 45 36   24 57 56   24 27  0   25 16 34
     95  0  0    24 40 24   21 48  0    48   112   -31   24 34 14   24 46 34   24 15 36   25  5 14
     96  0  0    24 28 45   21 48  3    49   113   -30   24 22 34   24 34 56   24  3 55   24 53 36

     97  0  0    24 16 48   21 48  6    50   114   -29   24 10 37   24 23  0   23 51 58   24 41 41
     98  0  0    24  4 35   21 48  9    51   114   -28   23 58 24   24 10 47   23 39 43   24 29 29
    

Path of the asteroidal occultation Occultation of HIP 54998 by 933 Susi on 2010 Nov 29

Favorable asteroidal occultation of 8.3 mag star with in 200 kms delhi on 29th Nov night

IOTA/IOTA-ES occultation update for
             (933) Susi / HIP  54998 event on 2010 Nov 29, 21:50 UT
                      Visible from S China, India, SW Asia

Summary
-------
On 2010 Nov 29 UT, the 22 km diameter asteroid (933) Susi will occult a 8.3 mag
star in the constellation Leo for observers along a path across S China, India,
SW Asia.

In the case of an occultation, the combined light of the asteroid and the star
will drop by 7.7 mag to 16.0 mag (the magnitude of the asteroid) for at most 0.9
seconds.

This update is based on UNSO/Flagstaff astrometry for the asteroid kindly
provided by Alice Monet, historical astrometry from the MPC files (via AstDys),
and the following catalogs for the star position: .

The event at a glimpse
----------------------
    * Rank: 43
    * date and approx. time of event: 2010 Nov 29, 21:46  - 2010 Nov 29, 21:49  UT
    * midpoint of event [JD]: 2455530.41019167
    * magnitude of target star: 8.3
    * magnitude drop [mag]: 7.7
    * estimated maximum duration [s]: 0.9
    * Moon: 38 % sunlit, 7° distance
    * Sun: 79° distance
    * rough path description: S China, India, SW Asia

Path of the Occultation

Click here to go to the Google Map for the occultation Path

Monday, November 1, 2010

November Lunar Occultation prediction for DELHI India

Occultation prediction for DELHI India

    day  Time   P   Star  Sp  Mag  Mag    % Elon Sun  Moon   CA   PA  VA  AA
  m  d  h  m  s      No  D     v    r V  ill     Alt Alt Az   o    o   o   o
Nov  1 22 27 16 R    1566cK4  6.3  5.6   23-  57     22 100  41S 240 300 219
R1566 = 36 Sextantis
   1566 is double: ** 7.3 7.3 0.030"   0.0**
   1566 has been reported as non-instantaneous (OCc1418). Observations are highly desired
Nov  3 22 58 46 r    1800 A0  5.5  5.5    7-  30      1 101  60S 254 315 230
R1800 = 21 Virginis
Nov 10 14 23  8 Gr   2747SK1  4.9  4.1   21+  54     13 ** GRAZE: CA 16.6S
Nov 10 14 23 18 M    2747SK1  4.9  4.1   21+  54     13 234  17S 158 107 162
R2747 = Ain Al Rami = nu 1 Sagittarii
   2747 is triple: AB 4.9 10.8 3.7"  83.5 : AC 4.9 11.2 27.8"  57.0
Nov 10 14 53 56 M    2749cK1  5.0  4.3   21+  55      8 239  16S 158 104 162
R2749 = Ain Al Rami = nu 2 Sagittarii
   2749 is double: ** 5.8 5.8 0.050" 350.0**
   2749 has been reported as non-instantaneous (OCc1557). Observations are highly desired
Nov 11 13 33  8 D    2886 K0  4.9  4.3   29+  66     31 219  83N  72  36  80
R2886 = 56 Sagittarii
Nov 11 14 49  4 r    2886 K0  4.9  4.3   30+  66     19 233 -63S 232 184 241
R2886 = 56 Sagittarii
Nov 12 13 17 55 M    3005 A5  6.2  6.1   39+  77     41 205  18S 147 124 160
Nov 15 18 52 43 d    3371 F0  6.4  6.2   69+ 112     16 259  80S  79  19 101
Nov 20 19 34 12 d   75633 K0  7.0  6.3   99+ 168     65 257  82S  99  33 117
Distance of 75633 to Terminator = 19.3"; to 3km sunlit peak = 8.2"
Nov 20 21 42 30 D     435 F5  5.8  5.6S  99+ 169     37 275  64N  66 357  84
R435 = 47 Arietis
    435 = NSV 15614, 5.8, , Type VAR:
Distance of 435 to Terminator = 14.2"; to 3km sunlit peak = 4.7"
Nov 22 17 50  4 R     714 F7  6.2  5.9   99- 167     68  96  50N 295   9 304
R714 = 95 Tauri
Distance of 714 to Terminator = 13.5"; to 3km sunlit peak = 4.2"
Nov 23 23 18 47 Gr    887cK5  7.0  6.1   95- 153     52 ** GRAZE: CA 15.7S
Distance of 887 to Terminator = 12.0"; to 3km sunlit peak = 2.7"
Nov 23 23 27  6 r     887cK5  7.0  6.1   95- 153     51 273  29S 208 135 211
    887 is double: ** 7.1 9.1 0.10" 103.0**
    887 has been reported as non-instantaneous (OCc 841). Observations are highly desired
Nov 24 21 17 17 R   78742 K0  7.0  6.4   89- 141     83 166  76N 290 303 287
Nov 25  0  7 16 R    1047SA2  5.3  5.3   88- 140     53 269  88S 275 204 271
R1047 = 36 Geminorum
   1047 is triple: ** 6.1 6.1 0.10" 132.0** : AB 5.3 14.0 12.1"   8.4
   1047 has been reported as non-instantaneous (OCc 628). Observations are highly desired
Nov 26 18  6 15 R    1284 F0  6.3  6.2   72- 116     20  83  68S 264 329 251
Nov 28  1 14 11 r    1429cF0  6.8  6.7   59- 101  -3 65 223  76S 276 239 258
   1429 is double: ** 7.6 7.6 0.050"  80.0**
   1429 has been reported as non-instantaneous (OCc 306). Observations are highly desired
Nov 29 23 58 50 R    1655 A5  6.8  6.6   37-  74     51 137  82S 284 321 261
Nov 30  3 47 57 r    1670 K4  4.8  4.0   35-  73  25 47 228  61N 320 280 297
   R1670 = 87 Leonis

Friday, October 1, 2010

Lunar Occultations for October for delhi

Occultation prediction for DELHI India
        Time   P   Star  Sp  Mag  Mag    % Elon Sun  Moon   CA   PA
  m  d  h  m  s      No  D     v    r V  ill     Alt Alt Az   o    o
Oct  2 19 44  6 r    1236 SG0  5.1        31-  68      1  71  80N 292
Oct  2 20 25 18 R    1241SA0  6.5  6.3   31-  67      9  75  53N 319
Oct 12 12 54 14 D    2500cB2  3.3  3.4v  27+  62  -7 29 212  56N  60
Oct 12 12 56 31 D    2499 K3  6.4  5.6   27+  62  -8 28 213  28N  33
Oct 12 14 10  7 R    2500cB2  3.3  3.4v  27+  63     18 227 -86N 278
Oct 14 13 22 54 D    2806 A0  7.0  6.9   46+  86     38 194  82S  91
Oct 16 18  9 39 M    3066cA9  6.0  5.8e  67+ 110     18 242  16S 149
Oct 17 13 48 12 D    3169 K0  6.1  5.5   75+ 119     48 158  62N  45
Oct 17 19 49  3 d    3187 M3  6.0  5.2v  76+ 121      9 254  35N  18
Oct 20 18 31 31 d    3524cF0  6.9  6.7   95+ 153     57 230  60S 107
Oct 21 17 51 46 D      89cF5  6.5  6.2   98+ 164     70 194  52S 122
Oct 25 14 22 31 r     582 F2  5.6  5.4   93- 150      8  69  47S 212
Oct 25 16 16  9 r     594MB9  6.9  6.9   93- 149     32  79  15N 330
Oct 26  0 56 49 r     624 K0  6.8  6.2   92- 146  -1 35 280  31N 316
Oct 26 16 38  6 R     742SG8  5.8  5.2   87- 137     25  75  86N 267
Oct 26 22 53 46 R     767SB2  5.5        85- 135     73 260  77N 277 

Wednesday, May 12, 2010

It is shining in the West!

No! This is not an election advertisement! It is an advertisement for the god of good fortune Sukra or the goddess of love Venus (If you believe in Gods!!!!). Either way you should be interested. Venus has been shining and shining for the past few months imploring you to look at her/him! You can not step out after sunset and NOT see it in the western sky. There is something more to Venus than just being bright these days. What’s that? Let’s find out.

Planet Venus has dared to let the sun go ahead and has venturing further and further away in the sky from the sun and finally it will stop for a well earned rest on August 20th, well that’s another story to tell about the phenomenon called eastern elongation. But Venus seems to be enjoying this independence from the sun right now. It glows brightest now!

After few days its all set to date Moon. Looks like an interesting event, Venus dating a crescent moon. Not even dating, trying to hide behind moon, away from the glaring lights and cameras of news channels. But even these probing eyes of reporters and sting operations would not stop it meeting Moon on 16th afternoon. This event in astronomy is called occultation. Remember, sun hiding behind the moon? You are right, during solar eclipse it does that, technically solar eclipse is an occultation. An occultation is an event that occurs when one object is hidden by another object that passes between it and the observer. Last time it happened with venus for India was on June 17 2007. This event is not rare one but it sure is an event to watch as bright Venus slips behind the moon.


Image taken by SPACE members just before Venus went behind moon in early hours of Nov. 10, 2004

Now why this event occurs? As we all know that Moon goes around the Earth and during it journey it comes in front of rest of the celestial bodies. Sun, planets, stars to name a few. As a result we have all sorts of occultations. As moon moves quite fast in the skies, it comes back to the same phase in about 29.5 days, it stands a good chance to occult the planets and stars. A planet being hidden by moon is not a common event as there are only few bright naked eye planets, even then it usually hides Venus behind at least once in a year.

Timings for Delhi
16 May, 2010
Disappearance                         15 50 38 IST
Reappearance                          17 18 31 IST

For timings in rest of the major cities in delhi, please visit SPACE occultation blog at http://occultationindia.blogspot.com

It is a daytime event. Last time its happened during night/eve but next two events are daytime and one has to wait till 2036 to see this event in night.

Next three events
June 30, 2011              Daytime event
Feb 26, 2014               Daytime event
Sep 16, 2036               NightTime event


How to see the event?
As the event is happening in the daytime, one can not see the venus going behind or coming from behind the moon but it will be site worth to watch once the sun has set and Moon-Venus pair shining in the western skies.

Event for Amateur Astronomers
Amateur Astronomers can try out photographing the event as well seeing the venus in broad daylight with help of data available for the venus and Moon, but its not going to be easy.

For complete data about timings read THIS POST


May 16th Venus occultation by Moon in daytime



The map shows the area over which the event can be seen.
Continuous thick white line indicates night-time region. Red line indicates twilight region. Dotted white line shows daylight region


On Sunday, May 16, 2010, the Moon will come directly between Venus and the Earth. The event would be visible from India during the day time.

Last time it happened for observers in india on June 18, 2007 and next will be in June 30, 2011

Venus is the brightest planet visible from the Earth and can be seen with the naked eyes in the board day light, if one knows were to look for it. This event provides a wonderful opportunity to look for Venus even when the sun is well above the horizon. 

For India the event begins after about 3:30 p.m. Indian time and ends after 5 p.m. The start and end times of the event are given in the table below.  At the start of the event the Moon and Venus will be well above the horizon.  The Moon itself will be about 30 degrees east of the Sun. It will not be very difficult to spot the Moon if the sky is clear and blue. All one needs to do is to face west and look about 30 degrees above the sun.. Needless to say that one should not look at the sun directly.

Venus will be a bit east of the Moon. With the reference of the Moon, it would be easier to spot the planet with the naked eyes. A pair of binoculars, however, would be most useful. But if you are using a binoculars or telescope be very sure not to point the instrument in the direction of the sun. It is quite likely that one may not be able to see the dark limb of the Moon.

Occultation from Delhi

Disappearence


Reappearence





Occultation Predictions 
(Courtsey Arvind Paranjpai, IUCAA)
Altitude of the Moon at the time of the event is given in degrees.
Please note that the predictions are accurate to within a second or two.
The times are based on the Latitude and Longitudes of various station available.
One is advised to start monitoring the event well ahead of the predicted time.
For various cities in India
[times given are in Indian Standard Time (IST).]


Disappearance
I. S. T.                  Moon  

Location h m s Alt



Agra 15 53 41 69

Ahmadabad 15 44 29 76

Amrawati 16 00 42 67

Amritsar 15 43 42 74

BANGALORE 16 20 17 60



Chennai 16 23 44 57

DehraDun 15 52 16 69

Gorakhpur 16 07 12 62

Hyderabad 16 08 45 64

Guntur 16 15 33 60



Hyderabad 16 09 11 64

Trivandram 16 40 15 54

Indore 15 53 15 71

Bhubneshwar 16 18 52 56

Jaipur 15 48 9 73



Jodhpur 15 41 22 77

KANDLA 15 37 51 80

Kochi 16 31 27 57

Kolkata 16 21 17 53

Lucknow 16 01 14 65



MT. ABU 15 42 39 77

Mumbai 15 53 24 73

NAINI Tal 15 56 14 67

Nanded 16 03 7 67

NEW DELHI 15 50 38 71



Pune 15 56 52 71

Rajkot 15 40 58 78

Srinigar 15 44 13 72

Udaipur 15 45 14 75

Vijayadurg 16 01 27 69



Reappearnce  
IST       Moon

Location h m s Alt



Agra 17 22 21 50

Ahmadabad 17 19 34 55

Amrawati 17 30 50 47

Amritsar 17 09 13 56

BANGALORE 17 32 39 44



Chennai 17 38 51 40

Dehra Dun 17 15 49 51

Gorakhpur 17 28 46 44

Hyderabad 17 34 26 45

Guntur 17 38 39 41



Hyderabad 17 34 37 44

Trivandram 17 22 19 45

Indore 17 25 51 50

Bhubneshwar 17 42 0 37

Jaipur 17 19 55 52

Jodhpur 17 16 27 55

KANDLA 17 14 15 58

Kochi 17 24 37 46

Kolkata 17 40 26 36

Lucknow 17 26 17 46



MT. ABU 17 18 7 55

Mumbai 17 22 15 53

NAINI Tal 17 19 29 49

Nanded 17 31 38 47

NEW DELHI 17 18 31 51



Pune 17 24 48 51

Rajkot 17 16 18 57

Srinigar 17 02 43 57

Udaipur 17 19 55 54

Vijayadurg 17 23 41 51

Friday, April 30, 2010

Data For Occultation in MAY 2010 for Delhi



day  Time   P   Star    Mag   % Elon Sun  Moon   CA
 d  h  m  s      No            v  ill    Alt Alt Az 
1 19 43  4 R    2514    6.4  87- 138     29 150  44S
2 18 48 26 r    2659    6.2  80- 127     14 129  56S
3 22 51 35 R    2822    5.6  71- 114     38 170  89S
4 22 12 26 r    2940c   7.4  62- 103     34 146  62S
7 22 35 28 r    3299    7.9  33- 70      27 114  73N
10 22 30 30 R    895    6.5  10- 37      7  83   62N
16 10 20 40 D          -3.9 07+  30  41  71 264  87S Venus    
16 11 48 29 R          -3.9 07+  30  22  51 275 -57N Venus    
16 14 31 42 d   77580   9.3 07+  32      18 288  79S
16 14 34 38 d   77567   9.3 07+  32      17 289  11S
16 14 45 38 D   77581   8.4 07+  32      15 290  35N
16 14 50 54 d   7661    9.3 08+  32      14 290  67S
16 14 52  8 D   77597   7.6 08+  32      14 290  70S
16 15  3 55 m   78298D  9.1 08+  32      11 292  15N
16 15  3 59 M     882S  5.0 08+  32      11 292  15N
17 14 54 41 m   78780   8.6 15+  45      24 284  15N
17 14 55 21 d   78774   7.3 15+  45      24 283   2S
17 16 14 53 d   78832   8.1 15+  46      8 291  54S
18 15  3 49 d   97289   8.2 24+  58      33 275  72N
18 16  2 26 D    1186   6.0 24+  59      21 281  39N
18 16 29 58 d   97327   8.4 24+  59      15 283  48S
19 14  4 38 d   98096   7.8 34+  71  -6  56 254  63S
19 16 47 33 m   98148W  7.6 35+  72      21 276  11N
20  8 13 32 d    1409c  5.0 43+  82  69  28  92  57N
20 14 33 47 D    1428S  3.5 45+  85 -12  57 241  60N omicron Leonis
20 15 25  7 R    1428S  3.5 46+  85      47 253 -28N omicron Leonis
20 17 22 35 d  117890D  7.2 46+  86      22 268  54S
22 14 14 29 D    1655   6.8 68+ 111  -8  59 179  41S
22 17 48 58 D    1670   4.8 69+ 113      31 247  74S 87 Leonis
24 15 32 32 d    1893   6.9 87+ 138      47 172  20S
26 17 12 57 d  183168   7.1 98+ 164      39 172  81S
28 19 48 47 r    2452c  6.7 99- 169      36 185  85S 28 Ophiuchi
28 20 14 28 r    2455   6.6 99- 169      35 192  83N 31 Ophiuchi


Time is in UT, to convert it into IST at 5 hrs 30 min
P   Phenomenon, D=Disapperance, R=Reappearnce
Star star catalogue number
Mag magnitude of star
% ill percent Illumination of Moon
Elon Elongation of Moon
Sun Sun altitude
Moon Alt=Altitude, Az=Azimuth
CA=Cusp angle

On 2010 May 11 18:11 UT (23:43 IST), the 37 km diameter asteroid (7476) Ogilsbie will occult a 5.0 mag star in the constellation Virgo for observers along a path across Japan,China, India, Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 9.3 mag to 14.3 mag (the magnitude of the asteroid) for at most 2.7 seconds. This sure is a very good event to observe as comparitevly bright star (5.o mag) is going to be occulted and the central path is passing quite near to Banglore, tirupati and few
other cities in south. SPACE is going to observe and record the event. More updates will soon be put up.




Friday, April 23, 2010

OCCULTATION ALERT for delhi today



Tonight 6.1 mag star will be occulted by Moon at 10:07:50 pm. If you have a small telescope of 7cm dia, you will be able to see this occultation.



Friday, April 16, 2010

OCCULTATION ALERT for Tijara Observation


OCCULTATION ALERT for Tijara Observation 

Moon will occult a 5.5 mag star 36 Tauri as the star will go behind the moon. Following are the predictions:

Apr 17 19 54 19 IST Disappearance 


Wednesday, April 7, 2010

Upcoming asteroidal events for INDIA

Brucia occults 7.4 mag star


On 2010 Apr 11 UT, the 36 km diameter asteroid (323) Brucia will occult a 7.4 mag star in the constellation Leo Minor for observers along a path across SE Asia, India.


In the case of an occultation, the combined light of the asteroid and the star will drop by 7.2 mag to 14.6 mag (the magnitude of the asteroid) for at most 5.0 seconds.




Terpsichore occults 8.6 mag star


On 2010 May 10 UT, the 119 km diameter asteroid (81) Terpsichore will occult a 8.6 mag star in the constellation Auriga for observers along a path across India.


In the case of an occultation, the combined light of the asteroid and the star will drop by 2.0 mag to 10.4 mag (the combined magnitude of the asteroid and the other component of the double star) for at most 2.9 seconds.




Ogilsbie occults 5.0 mag star


On 2010 May 11 UT, the 37 km diameter asteroid (7476) Ogilsbie will occult a 5.0 mag star in the  constellation Virgo for observers along a path across Japan,China, India, Africa.


In the case of an occultation, the combined light of the asteroid and the star will drop by 9.3 mag to 14.3 mag (the magnitude of the asteroid) for at most 2.7 seconds.


Details will follow.....

Lunar Occultation for Delhi for April 2010


Occultation prediction for DELHI

    day  Time   P   Star  Sp  Mag  Mag    % Elon Sun  Moon   CA   PA  VA 
  m  d  h  m  s      No  D     v    r V  ill     Alt Alt Az   o    o   o 
Apr 17 14 25 45 D     598SG0  5.5  5.0S   9+  36     21 287  51N  36 329 
R598 = 36 Tauri
Apr 21  9 33 30 d    1193cA0  5.4  5.4   46+  85  49 45  90  20N  31 100 
R1193 = 85 Geminorum
Apr 21 15  9 19 D    1217 B9  6.2  6.2   47+  87     59 259  63N  74   9 
Apr 21 19  8  8 D    1236SG0  5.1        49+  89      8 286  58S 135  73
R1236 = Tegmine = zeta Cancri
Apr 21 19  8  9 d X108006M    6.2  5.9   49+  89      8 286  58S 135  73
Apr 21 19  8 12 d   97646SG0  6.2        49+  89      8 286  58S 135  72
Apr 23 16 37 50 D    1465cK3  6.1  5.3   71+ 114     56 239  54N  73  23 
Apr 23 18 15 31 M    1468 M2  4.7  3.9s  71+ 115     36 258  15N  33 333 
R1468 = Yu Neu = pi Leonis
Apr 25 21  9 22 D    1713cK0  5.6  5.1   90+ 143     14 256  59S 137  78
Apr 26 13 47 22 D    1800 A0  5.5  5.5   95+ 154  -5 29 121  66S 126 176
R1800 = 21 Virginis
Apr 27 16 35 38 D    1944SK1  5.5  4.9   99+ 168     41 152  80N  75 101
R1944 = 75 Virginis
Apr 27 21 28 46 d    1960cK3  6.7  5.9   99+ 169     24 234  62S 108  60
Apr 29 21 20 11 r  183548 M4  6.8  6.0v  98- 163     34 204  43S 251 228
Apr 30 19 31  4 r    2364 A1  7.0  6.9   94- 151     33 160  68S 263 282 

Pallas occults a 11.6 mag star in the constellation Serpens for indian observers

On 2010 Apr 09 UT, the 554 km diameter asteroid (2) Pallas will occult a 11.6 mag star in the constellation Serpens for observers along a path across India, Russia, Europe.

In the case of an occultation, the combined light of the asteroid and the star will drop by 0.1 mag to 8.7 mag (the magnitude of the asteroid) for at most 33.1 seconds.

Not a spectacular event but as Pallas is occulting, hence the listing!!





The event at a glimpse
----------------------
    * Rank: 100
    * date and approx. time of event: 2010 Apr 09, 20:33  - 2010 Apr 09, 20:45  UT
    * magnitude of target star: 11.6
    * magnitude drop [mag]: 0.1
    * estimated maximum duration [s]: 33.1
    * Moon: 20 % sunlit, 94° distance
    * Sun: 133° distance
    * rough path description: India, Russia, Europe
click here to download the Google earth kml file for this event

Thursday, January 21, 2010

Report of ASE 2010

SPACE – ASE REPORT, JAN 15, 2010

The Annular Solar Eclipse which gained popularity as the Millennium's longest duration eclipse and as the 'Ring of Fire', occurred on Jan 15, 2010. SPACE (Science Popularization Association of Communicators and Educators) and ECa (Eclipse Chasers Athenaeum) celebrated this with events around India including public eclipse watches, scientific and educational expeditions and a cruise to Maldives.

Pictures of the ASE taken by SPACE teams can be seen at:

Recordings of the webcast of the ASE provided by the SPACE team from Varkala is available at on USTREAM  at http://www.ustream.tv/channel/annular-solar-eclipse-january-15th-2010

Following events and projects were executed by SPACE group during the ASE 2010

I.                    Pre-Eclipse Workshops, Delhi, 10th Jan, 2010
Space organized an eclipse workshop for all the schools at Delhi and NCR on 10th Jan 2010 from 9:30am to 2 pm. This workshop was held at a nodal point i.e. Nehru Planetarium for the maximum accessibility of all the space schools. The workshop began with a power point presentation that included all the basic facts about the eclipse. This presentation also explained the circumstances especially for the annular eclipse and why this eclipse is longest in three millenniums. Presentation included many rare and beautiful pictures that made the audience really excited to watch the upcoming solar eclipse. It also talked about the safe methods to watch any solar eclipse. This was followed by a demonstration and hand on the safe methods to watch the eclipse. All the safe as well unsafe equipments were shown to the audience and the explanation for using them was given thoroughly to the participants. Audience also came to know about the Do’s and Don’ts during a solar eclipse. The entire workshop had a continuous focus on breaking the superstitions and myths during an eclipse. The SPACE team could really see the eagerness and excitement for the upcoming solar eclipse on all the participants’ faces at the end of the workshop.


II.                  Pre-Eclipse Talk by Prof. Jay Pasachoff, 11th Jan 2010
SPACE and Nehru Planetarium jointly organized an interaction and talk with noted eclipse expert, Prof. Jay Pasachoff, field memorial professor of Astronomy and director of Hopkins Observatory at Nehru Planetarium on 11th Jan, 2010. More than 170 students and 30 space club school coordinators attended as Prof. Pasachoff shared his eclipse experiences. It was very interesting interaction between the students and Prof. Pasachoff. He cleared their doubts about eclipses. It was indeed a great opportunity for students to interact with the top most authority in solar eclipses in the world. Electronic and print media persons were there to cover the event.

III.               Public Watches in Delhi/NCR  for ASE, 15th Jan 2010
SPACE teams conducted public solar eclipse watches in Delhi. A watch was held at Nehru Planetarium. The observations in SPACE schools in delhi and NCR went off well as most of the schools arranged the eclipse watch. Hillwoods academy, Ahalcon school,  and Apeejay Pitampura and had big crowd of students and teachers to view the eclipse. Reports from other schools are awaited. Students of Salwan Public school and St. Mary’s observed the eclipse from the planetarium.

IV.                SPACE Nodal Centers (SNCs), 15th Jan 2010
SNC's accross the nation had organised successful solar eclipse watches in the institutions. Deepak Sharma of SNC Meerut went to Kanyakumari to observe the eclipse and did outreach activities with eager public there. Ashutosh Tripathi of SNC Indore, joined the team of SPACE in Varkala and did eclipse photography. More reports from other SNC’s are awaited.

V.                  VARKALA, KERALA, 15th Jan 2010
In Varkala, Kerala which is at the Northern edge of the Annular Eclipse, SPACE held several projects in an effort to address different aspects of the eclipse. These included a public watch, educational experiments with school children and a scientific team’s attempts to capture Baily’s Beads.

a. Varkala - Public Watch
A public watch was held at the scenic helipad location on a cliff overlooking the beach, and the public were treated to vistas of the eclipse over the ocean. About 800 people showed up at the helipad area to catch a glimpse! Science teams from SPACE led the observations and explained the stages as well as provided people with solar goggles. Shikha Chanana and Mr. Ved Prakash Bahmba explained the phenomenon and showed safe ways to view the eclipse to the eager crowd comprising of locals and foreign tourists there.


b. Varkala - Educational Experiments
A team of about 10 school students were led by SPACE science officer Tanmay Paranjpaye into performing several real time experiments during the eclipse. The students ranged from third graders to college students, and hailed from Delhi, Shimla and Hyderabad. Experiments ranged from measurements of temperature, humidity and ambient light variations as well as radio frequency measurements before during and after the eclipse. These experiments were instrumental in involving the school children in real time experimentation and data collection.

Detailed Report
Students performed the experiments on 14th Jan 2010 (Pre-Eclipse day), 15th Jan 2010 (Eclipse day). Pre eclipse and Post eclipse day readings served as the reference to check the magnitude of variations observed.
1. Variation of Air Temperature and Humidity.
This experiment was performed at two altitudes by students using digital Hygrometer and Thermometer.
1a. At 2m above ground (by Gautam Sharma, Hyderabad Public School):
Pre eclipse day -
Humidity: almost constant 58 to 59%
Temperature: almost constant ranging from 33 to 35 degree C.
Eclipse Day -
Temperature : Dropped from 32 to 25.6 deg C during annularity and went up again to 33.4 deg C.
Humidity: Max. 56%, During annularity 54% and Min. 48%

1b. 10m above ground  (Shashank Shekhar and Pallavi Mamgain The airforce school subroto park, delhi)
Pre-Eclipse Day -
Temperature: almost constant ranging from 30 to 32 degree C.
Humidity: almost constant 66 to 67%
Eclipse Day -
Temperature: Dropped from 32 to 28.3 deg C during annularity and went up again to 32 deg C.
Humidity: Max. 64%, During annularity 62 to 63% and Min. 54%

2. Variation of Wind Speed
2a. 2m above ground (Sidharth Raj Agarwal, Birla Vidya Niketan delhi)
Apparatus used was a digital anemometer. Observed changes:
Pre- Eclipse Day – Wind Speed: Max. 2.6 m/s , Min. 0.7 m/s
Eclipse Day - Wind Speed: Max. 5.8 m/s, During Annularity 0.1 m/s  and Min. 0.1m/s .

2b. 10m above ground (Shashank Shekhar and Pallavi Mamgain The airforce school subroto park, delhi)
Pre-Eclipse day - Wind Speed : Max. 3.6 m/s, Min. 0.3 m/s
Eclipse Day - Wind Speed: Max. 3.3 m/s, During annularity 0.2 to 1.4 m/s and Min. 0.2 m/s

3. Variation of Ambient Brightness (Praful Sharma, Alcon Public School)
3a. 2m above the ground.
Apparatus used was a digital Luxmeter. Observed changes:
Pre eclipse day - Ambient Light: Max. 1839*20000 Lux , Min. 168*20000 Lux
Eclipse Day - Ambient Light : Max.  1460*20000 Lux, During Annularity 80 to 130*20000 Lux  and Min. 80* 20000 Lux.

The rest of the students  (Chhavi, Asmi, Sharmishtha and Dhananjay ) belonged to standard Jr KG to 3rd of Indraprastha world school, Paschim Vihar, Delhi. They were involved in visual observations of the eclipse and drawing the various phases of the eclipse.

4. Radio Measurements
Tushar, a member of Astronomica and a student volunteer with SPACE, monitored the Sun at 20 MHz with SPACEs Radio Jove receiver assembled by him as team member under SPACE project and Dipole antenna for three days, starting a day before the eclipse and ending a day after. He got some interesting results correlated to the large sunspot group present on the Sun on the eclipse day.


Varkala - Scientific Team captured Baily’s Beads
Report from Scientific Team, Varkala, Kerala, ASE 2010, SPACE

It certainly seems like the efforts of SPACE team in choosing Varkala, Kerala as the place for observing ASE 2010 paid off. While many people prefer to go to the centre line of the eclipse to see the perfect do-nut like Sun (about 10-11 minutes duration for this eclipse), SPACE chose to go to the near the northern grazing zone of the eclipse just 3 KM inside the interior limit of the graze zone where the phenomenon of Baily's Beads - the beautiful, rapidly changing beads of light formed as the lunar mountains graze past the surface of the Sun and the light from the photosphere shines through the lunar valleys - would be most dynamic and prolonged (ref: http://eclipse.gsfc.nasa.gov/SEmono/reference/graze.html) while still giving an Annularity of 2 minutes 56 seconds (after correcting for lunar limb profile). The observation of Bailys Beads from the edge of the eclipse path also helps in accurately determining the size of the Lunar shadow and thereby accurately determining the diameter of the Sun (method: http://weblore.com/richard/Solareclipse.htm).

SPACE ASE 2010 Scientific Team was located at the roof of hotel Sanctum Spring beach resort (08° 44' 09."3 N, 76° 42' 18.0" E) near the Helipad, Varkala. The team comprised of Vikrant Narang, Chander Bhushan Devgun, Mila Mitra and Surendar Solanki. They were assisted by the technical team of Mani and satish.

Here are preliminary reports of Experiments and Photography:

1) Video Recording Baily's Beads at High Time and Pixel Resolution:
Equipment Used: Cannon 500D DSLR at prime focus behing 10" Meade LX200 telescope.

Focal Length: 2500mm,
Resolution: Full HD (1920px X 1080 px),
Frame Rate: 20 Frames per second,
Filter: Black Polymer filter from Thousand Oaks Opticals.
Timing recording method: Beeper Sync Software and Verbal Announcement by Looking at GPS Screen.

The setup successfully recorded spectacular video of beading phenomenon at a very high resolution. The beading can be seen in the video for over 1m 30sec before second contact and over 1m after 3rd contact. This hi definition footage can be termed as the first one ever taken from India by group of astronomers apart from the research institutions working in this field.


The feed from this was streamed live intermittently on Aaj Tak TV channel as an exclusive coverage.

Two exciting possibilities are being considered to analyze the data:
a) See how the data can be used to help the research by IOTA to measure the Solar Diameter

b) Co-relate the lunar limb profile generated from beading phenomenon with Kaguya lunar limb profile. (method: http://www.digitalsky.org.uk/3cls/3cls.html)

2) Photography of the Eclipse
Equipment Used: Cannon 450D DSLR at prime focus behind 110mm dia/700mm fl William Optics Refractor Telescope piggy backed in 10" Meade LX200 telescope.

Filter: Black Polymer filter from Thousand Oaks Opticals.
Software used: Images Plus
The annularity was shot with filters on.
Images of the eclipse have been uploaded at:
http://picasaweb.google.co.in/organisationspace

3) Webcast

A live webcast was shown on www.eclipsechasers.org
1.3 mp webcam was linked to a 50mm achromat with 300mm fl and it was streamed live on the www.ustream.tv In all 106876 views were recorded on the website making it the most viewed site on the day of the eclipse for webcast on ustream in eclipse webcasts. Most of the TV channels used the webcast to shoe the eclipse from Varkala!!

4) HD Video of the eclipse with a Handy Cam

HD Video of the whole eclipse duration was shot with sony handycam mounted on meade lx200 10” at 1920x1080 pixels resolution. Soon the whole footage will be available online.

VI.                SPACE at Dhanushkodi, Tamilnadu

SPACE C.M.D. Mr. Sachin Bahmba travelled from varkala, kerala especially to Dhanushkodi to meet Tamilnadu Governor Mr. Surjit Singh Barnala and to show him the ASE. Mr. Bahmba showed the eclipse to the Governor and other dignitaries. Lt.  Governer of Pondicherry Mr. Iqbal singh also was treated to the rare phenomenon of annularity. Lot of police personnel and public viewed the eclipse from the 76mm telescope with special filters mounted  for eclipse viewing.

VII.             FIRST ECLIPSE CRUISE FROM KOCHI TO MALDIVES, 13-16th Jan 2010
STEPL (SPACE Technology and Education Private Ltd.) partnered with Luis Cruises India to take an avid crowd of passengers aboard the luxury liner Aquamarine from Kochi to Maldives and back to view the Annular Solar Eclipse. Over 650 people were on board to enjoy the ships amenities as well as star parties and navigational tips. The eclipse was viewed from the docked point close to Male, which is along the Central annularity line therefore a great view of the Annular Eclipse was observed by about 100 people, although the clouds made only 1 min 20 sec of the eclipse visible. This eclipse cruise was a first time path breaking concept in India. This innovative feat has now placed SPACE in the unique position of having organized eclipse watches from Earth, sky and now Water. Mr Amit Verma, Preshanth J, Shubham Garg and Mrs Pooja Kumar were part of the SPACE team which interacted with passengers and showed them the eclipse.

VIII.           ECLIPSE CRUISE ABOARD VRINDA, 14-15th Jan 2010
STEPL also partnered with the Oberoi Vessel Vrinda to take people aboard a motor cruise starting at Vembanad Lake and travelled along the backwaters of Kerala to show them the eclipse from the water. Guests were assisted in photographing and observing the eclipse by Mr. Nikhil Pawar, scientific officer.

IX.               POST ECLIPSE INTERACTION WITH PROF. PASACHOFF, 18th Jan 2010
SPACE had set up an interaction session with Prof. Jay Pasachoff at Apeejay Pritampura School, where he gave the students a presentation on ‘Eclipses and experiences’, and the students interacted with him after that via a questions and answers session. The SPACE team also shot a documentary footage of him covering his experiences.

ECLIPSE OBSERVATIONS FROM SPACE REGINAL CENTRES:
SPACE regional centres in Hyderabad, Banglore and Kolkata also organized public observations on the day of the eclipse to make general public aware of the event. Detailed reports are awaited.


All India radio did a talk show on the eclipse on 15 january, 2010 in which President SPACE, C B Devgun, discussed various ways to see the eclipse safely.

Appendix:
Pictures of the ASE taken by SPACE teams can be seen at:

Recordings of the webcast of the ASE provided by the SPACE team from Varkala is available at www.ustream.tv

For details contact
Mila Mitra
Scientific Officer
SPACE
9971641274