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


The list shows possible double stars, with separations less than 2", predicted to be occulted by the Moon during May 2015 and visible from parts of Australia or New Zealand. 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 are also included in the list. Light curves for the occultation of these stars are also required. 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
May     No    v   ill      magnitudes sepn    PA?    OCC #    Visibility
 2 d  139281? 8.4   97+ : AB  8.6 10.40 0.30" 126.0  HDS1867  ,AkChIW
 2 d  139436  9.4   98+ : **  9.7  9.7  0.10"  90.0  OCc  87  P
 3 d    2028* 6.5   99+ : AB  6.5       0.30"  31.0  CHR  40  BS,AkChW
 3 d    2064  6.3  100+ : AB  6.87 7.9  1.08" 271.2  STF1837 AAsBCMPRS
        2064:  B star is X128771

 5 r  159702  8.1   97- *** Kepler star, light curve desired  ACHMPS,ChI
 5 r  159717  9.4   97- *** Kepler star, light curve desired  AAsMP
 5 r  159794  8.7   97- *** Kepler star, light curve desired  P  
 6 r    2447  8.0   93- : **  8.2  8.7  0.04" 132.0  OCc1497  H,ChI
 7 r X144366  7.6   88- : AB  7.6 10.3  1.00" 310.8  HU  186  AsBCRS,AkChW
     X144366:  B star shown as R2555, catalog confusion?
 7 r  160935  9.1   86- : AB  9.9 10.0  0.30" 168.5  A  2254  AAsBHMPRS,ChI
 7 r  160994# 8.4   86- : AB  8.8  9.8  0.40" 153.7  A  2256  AAsHMP
 8 r X 44881# 8.6   79- : AB  8.7  9.8  1.3"  165.5  HU  255  ABCHMPS,AkChIW
     X 44881:  B Star is X161276
 8 r  161970# 9.4   78- : AB 10.2 10.2  0.54" 297.4  RST3205  AAsBCMPRS
 8 r X 45131 10.0   77- : ** 10.0       0.38" 241.0  OCc1765  AsP
 8 R    2768* 7.8   77- : **  9.2  9.2  0.10"  90.0  OCc1563  P
 8 r  162102# 8.7   77- : **  9.0 10.3  0.05" 254.3  OCc1764  P
 9 r X 46870  9.9   69- : AB 10.6 10.6  0.45"  46.1  RST4049  BCS,AkChW
10 r    3021  7.3   59- : **  8.0  9.0  0.25" 235.0  OCc 413  AAsBCHMRS,AkIW
11 r  164563# 7.6   47- : **  7.6       0.04" 132.0  OCc1708  AAsBCHMRS,AkChIW
11 r  164606  9.4   46- : **  9.8  9.8  0.10"  94.0  OCc 948  AsBR
11 r  145613! 8.7   46- : **  8.7       0.13" 202.0  OCc1744  AHMS,AkChIW
11 R    3184* 7.0   46- : **  7.2  9.7  0.06" 260.3  OCc 470  H
12 2  146170  9.3   35- *** Kepler star, light curve desired  CHMS,AkChIW
12 r X 52194  9.5   35- *** Kepler star, light curve desired  ABCHMRS,AkChIW
12 r X 52196  9.9   35- *** Kepler star, light curve desired  BCHMS,AkChIW
12 r X 52200  8.5   35- *** Kepler star, light curve desired  ABCHMRS,AkChIW
12 r X 52233 10.1   35- *** Kepler star, light curve desired  BR
12 r X 52291 10.2   34- *** Kepler star, light curve desired  ABCHMRS,ChI
12 r X 52337 10.2   34- *** Kepler star, light curve desired  R
12 r X 52369 10.5   34- *** Kepler star, light curve desired  AsR
12 r  146226 9.6    34- *** Kepler star, light curve desired  ,I
12 r X183345 10.6   34- *** Kepler star, light curve desired  CS
12 r X 52377 10.3   34- *** Kepler star, light curve desired  AAsBCRS
12 r X 52378 10.5   34- *** Kepler star, light curve desired  AsR
12 r  146250  9.7   34- *** Kepler star, light curve desired  AAsCHMPRS
12 r  146259  9.8   34- *** Kepler star, light curve desired  AsR
12 R    3328  6.4   34- : Aab 7.01 7.33 0.10" 354.0  HDS3222  ACHMPRS
        3328  *** Kepler star, light curve desired 
12 r X 52416  9.6   34- *** Kepler star, light curve desired  AAsPS
12 r X 52391 10.6   34- *** Kepler star, light curve desired  AHM
12 r  146265  9.2   34- : AB  9.97 9.83 0.69" 286.1  A   310  HM
13 r  146730  8.6   25- : **  9.5  9.5  0.10" 131.0  OCc 950  ,AkChIW
13 r  146731  9.6   25- : **  9.9  9.9  0.10"  43.0  OCc 949  ,ChIW
13 r  146768 10.8   24- : AB 10.8 11.2  1.4"  247.5  RST5173  ,AkChW
13 R    3485  8.9   23- : AB  8.9 11.7  0.68" 241.3  YR   18  AsP 
14 r  109244  9.6   14- : **  9.7  9.8  0.03"  16.0  OCc 547  ACHMS,I
15 R  109908  8.0    7- : Bab 8.1 11.1  0.56"  36.5  S   398  BRS
20 D   94839  7.5    6+ : **  7.6 10.2  0.05" 246.0  OCc1026  AAs
20 D   94857  7.8    6+ : **  7.9 10.5  0.03" 206.0  OCc1025  As
20 d     884* 8.4    6+ : **  8.6  8.6  0.05"  90.0  OCc1280  P
21 d X 90005  9.6   11+ *** Kepler star, light curve desired  ,AkChW
21 d X 90181  9.4   11+ *** Kepler star, light curve desired  ,ChIW
21 d X 90305 10.9   11+ *** Kepler star, light curve desired  ,AkChW
21 d X 90457 10.3   11+ *** Kepler star, light curve desired  ,AkChW
21 d X 90488 10.1   11+ *** Kepler star, light curve desired  ,I
21 d X 90513  9.5   11+ *** Kepler star, light curve desired  ,I
21 d X 90889 10.7   11+ *** Kepler star, light curve desired  BS
21 d X 90920 10.9   11+ *** Kepler star, light curve desired  BS
21 d X 90993 10.3   11+ *** Kepler star, light curve desired  BCHRS
21 d X 90890 10.8   11+ *** Kepler star, light curve desired  R
21 d X 91055 10.8   12+ *** Kepler star, light curve desired  BCHS
21 d   96011* 8.6   12+:***   9.4  9.4  0.05" 144.0  OCc1022  H
21 d X 91285 10.7   12+ *** Kepler star, light curve desired  R
21 d X 91748 10.2   12+ : AB 10.2 10.9  1.9"   98.4  J   289  AAsM
21 D   96090# 8.3   12+ : AB  8.9  9.1  0.30" 173.9  HO  238  P
21 D   96110* 7.3   12+ : **  7.5 10.9  0.31"  53.0  OCc 923  P
21 D    1040# 6.4   12+ : AB  6.61 8.04 0.22" 150.7  STT 156  P
22 d   97047# 9.1   19+ : AB  9.4 10.65 0.52" 210.3  COU 474  ACMS
22 d X 11377 10.0   19+ : AB 10.0 10.2  0.42"  94.4  COU 476  AAsBHMRS
22 D   97098  8.3   20+ : **  9.4  9.4  0.05"  33.0  OCc1369  AAsCHMP
23 D   97782* 8.1   27+ : **  8.8  9.3  0.20"  93.0  OCc1386  ,ChIW
23 d   97787  9.7   27+ : AB 10.5 10.5  0.20" 143.1  HEI 476  CS,AkChIW
24 d X114275 10.0   38+ : AB 10.6 10.9  0.60" 313.0  TDS6481  P
26 d  118531  8.8   56+ : AB  8.9 11.68 0.50" 358.0  HDS1549  AsBRS,Ak
26 d    1583  8.2   57+ : AB  8.5 10.05 1.72" 345.0  A  2773  AAsBCHMRS,Ak
        1583:  B star is X119678   
27 d  118975  9.7   66+ *** Kepler star, light curve desired  AHP
27 D    1692  6.9   66+ : AB  7.0 10.04 0.25" 125.8  A  2578  AAsBCHMRS
27 d    1700* 8.6   67+ : **  8.5  8.5  0.10"  90.0  OCc 163  P
        1700  *** Kepler star, light curve desired
30 d  139606  9.6   89+ : AB  9.8 12.1  1.0"  118.1  RST3853  ,I
30 d    2028* 6.5   91+ : AB  6.5       0.30"  31.0  CHR  40  AAsP
31 d  158816  8.8   95+ : AB  9.0 10.8  0.8"   11.1  RST3895  AAsBCMPRS,AkChIW

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

Visibility codes:
Australia: A Adelaide, As Alice Springs, 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 new version of 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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