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Lunar Occultations of Close Double and Kepler2 Stars in September 2015 for Australia and NZ


The list shows occultations of possible double stars during September. Although the main emphasis remains on stars with separations < 2", now that the more detailed lunar limb profile from LOLA is available, some wider pairs are included. Doubles predicted to be occulted by the Moon during July 2015 and visible from parts of Australia or New Zealand are listed. The listing is a very abbreviated version of predictions produced by Occult plus an indication of the region of visibility. Observers need to generate their own precise predictions using Occult.

Observations of all pairs in the list are highly desirable. Those showing an OCc number have been reported as non-instantaneous at a lunar occultation. Confirmation or otherwise of any double nature is wanted.

*** Kepler stars: the number of these is increasing, rather than list them all, the nights on which they are occulted are indicated. Individual Keplers are only shown if they are also a known or possible double. Light curves of occultations of all Kepler stars are desired.
Reporting of these events is still being sorted out, with a system in Occult coming soon. In the meantime please archive any observations of Kepler stars, keeping both the video and the light curve.

The list below is generated by OCCULT for a 25cm telescope. Some of the events may be beyond the reach of smaller telescopes.

Please send reports of all observations of these stars to Brian Loader at palbrl@clear.net.nz, including any made in earlier months and not so far reported. And of course if you observe a stepped event for a star, which is not a known double, please report this. More details about reporting follow the predictions.

============================================================================

 d P    Star  Mag    %         Double details        WDS or   Area of
Sep      No    v    ill      magnitudes sepn    PA?  OCC #    Visibility
 1 R  Uranus  5.7   88- : Gradual reappearance                ,AkChIW
 1 r  109790  9.4   87- : **  9.3  9.9  0.06" 272.8  OCc 548  ABCHMRS
 2 r  110328  7.0   80- : AB  7.41 8.39 0.10" 335.0  HDS 280  BCRS,AkW
 4 r  *** Kepler Stars occulted, light curves are desired     BRS,AkChW
 5 r   94294  7.6   46- : **  8.7  8.7  0.10"  90.0  OCc  27  ABCHMRS,AkChIW
 5 R     764* 4.9   46- : AB  5.8  5.8  0.10"  55.6  A  3010  ABCHMS
 5 r X  6679 10.1   45- : AB 10.6 11.2  0.41"  92.9  COU 369  P
 6 r X  7838# 8.0   37- : AB  8.82 8.97 3.15" 151.2  STF 813  ,AkChW
     X  7838:  B star s X 79582
 6 R   95127  7.2   35- : **  8.4  8.4  0.02"   0.0  OCc 450  ABCHMS
 6 r   95229  8.6   35- : AB  9.0  9.7  0.08" 181.2  A  2444  P
 6 R   95252# 8.1   34- : AB  8.33 9.78 0.29" 157.9  COU 471  P
 6 r   95265* 8.9   34- : **  9.6  9.7  0.02" 235.6  OCc 487  P
 7 r   96178* 8.5   27- : **  9.2  9.2  0.05" 153.0  OCc 405  ,AkChW
 7 r   96277* 7.6   26- : AB 12.0 12.5  3.2"  138.4  COU 769  ACHMS
 7 r  *** Kepler Stars occulted, light curves are desired     ACHMS
 7 r X 96989  9.9   25- : AB 10.0 12.6  3.9"  196.6  J   358  P
 8 R   97207  8.5   18- : **  9.5  9.5  0.05" 350.0  OCc 368  ,AkChIW
 8 R   97223  8.5   18- : **  9.2  9.2  0.05" 350.0  OCc 369  ,AkChIW
 9 r  *** Kepler Stars occulted, light curves are desired     ABMPRS,ChIW
 9 r   97966 10.0   11- : AB  9.8 11.8  13.4"  69.1  HJ 3310  ,AkChIW
      *** Kepler2 star {ID = 211638996} light curves desired    
 9 r X 13271*10.4   10- : AB 11.2 11.2 0.20"  46.9   HEI 146  P
      *** Kepler2 star {ID = 211594276} light curves desired    
10 r   98622  8.6    5- : **  9.1  9.6  0.40" 158.0  OCc1403  A

16 d  *** Kepler Stars occulted, light curves are desired     ABHMPRS,AkChIW
16 d X126752 10.8    8+ : AB 10.8  8.0  9.2"  150.5           B
      *** Kepler2 star {ID = 212715858} light curves desired
16 D    1951# 7.1    8+ : AB 7.79 8.08 2.62"  38.7   STF1763  BCR
        1951:  B star is X126753
      *** Kepler2 star {ID = 212715737} light curves desired
17 d  158590 10.7   14+ : AB 10.8 11.1  6.5"  167.2  WFC 150  ACM
      158590:  B star is X128938
17 d X 38084 10.0   14+ : AB 10.7 10.8  0.50" 101.0  TDS9221  AP
18 d  159140  8.0   22+ : **  8.8  8.8  0.36" 324.0  OCc1019  ,I
19 d  *** Kepler Stars occulted, light curves are desired     ABPR
19 d  159822  7.8   32+ : **  8.6  8.6  0.10"  90.0  OCc  18  P
20 d  160209  8.7   40+ : AB  9.2  9.6  0.62" 193.0  HU  162  H,AkChIW
20 D    2447  8.0   40+ : **  8.2  8.7  0.04" 132.0  OCc1497  ABCHMPRS
20 d X 41797 10.2   40+ : AB 10.9 11.0  0.30" 182.7  RST3061  AP
21 d  160935  9.1   51+ : AB  9.9 10.0  0.30" 168.4  A  2254  R
22 d X 44778  8.6   61+ : AB  8.6 10.3  2.0"  298.2  HWE  44  ,ChIW
22 d X 44881#?8.6   61+ : AB  8.7  9.8  1.3"  165.5  HU  255  ABCHMPRS,AkChW
     X 44881:  B star is X161276
22 d X 44918  9.8   62+ : AB  9.8 11.5  2.0"  341.0  HU  257  ABCMRS
22 d  162102# 8.7   63+ : **  9.0 10.3  0.05" 254.3  OCc1764  P
23 d X 46870  9.9   72+ : AB 10.6 10.6  0.45"  46.2  RST4049  ABCHMRS
24 D    3021  7.3   81+ : **  8.0  9.0  0.25" 235.0  OCc 413  CS,AkChIW
24 d  163899  8.8   82+ : AB  9.6  9.6  0.31" 183.5  RST4069  P
24 d X 49360  9.3   83+ : AB  9.2  9.6  2.4"    4.7  HU   82  P
25 D  164563# 7.6   89+ : **  7.6       0.04" 132.0  OCc1708  ,ChIW
25 d  164606  9.4   90+ : **  9.8  9.8  0.10"  94.0  OCc 948  ABCHMRS,AkChIW
26 d  *** Kepler Stars occulted, light curves are desired     BCHRS,AkChIW
26 d    3348  8.2   96+ : AB  8.30 10.7 0.40"   1.0  HDS3237  ,I

28 r  109355  7.7  100- : **  9.1  9.1  0.10"  90.0  OCc1143  ABCHMRS
28 r      90  7.6  100- : AB  7.86 9.7  2.05" 209.8  STT  18  ABCHMRS,AkChIW
29 r     226  6.5   97- : AB  6.5 10.6  4.0"   77.1  STT  31  ,ChI
29 r     235  7.6   97- : AB  7.5  7.6  1.6"   59.0  STT 138  BR
         235:  B star is X  2226
29 r  110038  8.5   97- : **  9.0  9.0  0.10"  90.0  OCc 542  ABCMRS,ChW
29 R     247  6.3   97- : **  7.1  7.1  0.10" 111.0  OCc1030  CHMS,AkChIW
29 r  110097  8.6   96- : **  9.3  9.3  0.10"  90.0  OCc  76  ABCHMPRS,AkChIW
30 r     384# 5.6   91- : AB  5.7  5.8  0.05" 167.8  MCA   7  H,AkChIW
30 R     404  5.2   90- : **  4.8  7.4  0.04"   9.0  OCc 975  P

======================================================================

Visibility codes:
Australia: A Adelaide, B Brisbane, C Canberra, H Hobart, M Melbourne, P Perth, R Rockhampton, S Sydney

NZ (following a ,) Ak Auckland, W Wellington, Ch Christchurch, I Invercargill.
----------------------------------------------------------------------
Stars with previous occultation observations: 

#: Observations indicating double - these need further checking
*: Observations not showing double - need confirmation
!: Recent video discoveries - confirmation needed.
?: Uncertain double observation, confirmation or otherwise needed




==================================================================

Reporting Your Observations

The most convenient way of reporting is to use Dave Herald's OCCULT which has a Double Star report option in the Observations editor. Before using it, generate a light curve with Limovie and copy to the clip board. Your graph will be attached to the email which you can then send to palbrl@clear.net.nz.

Otherwise in reporting please include your name and positional data as for other occultations reports, also your telescope type and method of observing and timekeeping.

For each event give the star name and the times of each step of the event with the corresponding accuracy. The limb PA, Rv and Cct of the event would also be useful.

In addition to measures of the PA and separation of binary stars, there is also a need for an estimate of the magnitude difference. An estimate of this can be made from the step sizes shown by Limovie data. So if possible a determination should be made of the size of each step together with an estimate of accuracy.

Please also report cases where a double event is predicted but none detected. These are especially likely with stars shown with an OCc designation


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