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Lunar Occultations of Close Double and Kepler2 Stars in January 2016 for Australia and NZ


The list shows occultations of possible double stars during January. 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 January 2016 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
Jan      No    v    ill      magnitudes sepn    PA?  OCC #    Visibility
 1 r  119310  9.5   55- : AB  9.4 11.4  0.40"  64.1  A  2582  ,ChIW
 1 r  119340  8.3   55- : **  9.3  9.3  0.10"  90.0  OCc  15  H
 1 R    1772  3.9   55- : AB  3.9  5.9  0.12" 167.2  MCA  37  ABCMPRS
 2 R    1866  5.8   46- : Aab 5.9  8.3  0.11"  28.8  CHR  39  ,AkChIW
 2 r    1882  8.3   45- : **  9.1  9.1  0.15"  50.0  OCc1446  ABCHMPRS
 2 r  139158  8.2   45- : AB  9.3  9.6  1.4"  198.8  BRT 444  ABCHMPRS
 3 r  *** Kepler Stars occulted, light curves are desired     ABCHMRS,Ak
 3 R    1994  6.6   35- : AB  6.7  7.3  3.6"  100.3  STF1788  APR
    *** 1994 is a Kepler2 star {ID = 212708104}
        1994 B star is X127461
 4 r  158781  8.7   26- : **  9.5  9.5  0.05"  12.0  OCc 623  P
 5 r X 39439 10.3   19- : AB 11.1 11.2  0.18" 288.8  HDS2167  ,AkChIW
 5 r  159305  9.3   19- : Aab 9.6  9.6  0.10"  90.0  OCc  21  ACM   
 6 r  159805 10.0   12- : ** 10.1 10.1  0.10"  90.0  OCc  17  ,AkChIW
   ***159805 is a Kepler2 star  {ID = 205692130}
 6 r  *** Kepler Stars occulted, light curves are desired     ABCHMPRS,AkChIW
 6 R  159822  7.8   12- : **  8.6  8.6  0.10"  90.0  OCc  18  ,AkChIW
 7 R    2495  6.0    5- : AB  6.34 7.56 2.42" 263.4  BU  126  P

13 d  *** Kepler Stars occulted, light curves are desired     ABCMPRS,Ak
13 d  146056  9.3   13+ : AB 10.1 10.2  0.30" 216.4  A  2694  ,Ak
13 d    3285* 5.9   13+ : **  6.9  6.9  0.10"  90.0  OCc   6  ,AkChW
14 d X 53288 10.0   22+ : AB 10.1 12.3  1.3"  264.0  RST4719  ,AkW
14 d  146623  8.9   22+ : AB  9.6  9.6  0.10"  15.6  YSC 167  ,AkChW
14 d  146716  8.4   23+ : AB  9.2  9.2  0.20"  90.0  RST4724  P
15 d  109117  9.3   33+ : **  9.8  9.8  0.10" 103.0  OCc 728  R
15 d  109142  7.6   33+ : **  8.7  8.7  0.04" 115.0  OCc1140  AP
17 D  110328  7.0   55+ : AB  7.41 8.39 0.10" 335.0  HDS 280  BCHMRS,AkChIW
19 D     581  6.8   76+ : AB  6.9  11.1 3.0"  262.2  HEI  31  ,ChW
19 d  *** Kepler Stars occulted, light curves are desired     ABCMPRS
19 d X  5185  9.4   77+ : **  9.2  9.2  0.08" 229.0  OCc 941  CHM
   ***X 5185 is a Kepler2 star {ID = 210586179}
20 d   94294  7.6   86+ : **  8.7  8.7  0.10"  90.0  OCc  27  APR
20 D     764* 4.9   87+ : AB  5.8  5.8  0.06" 108.8  A  3010  P
21 d     884* 8.4   92+ : **  8.6  8.6  0.05"  90.0  OCc1280  ,AkChW
21 d X  7838# 8.0   92+ : AB  8.82 8.97 3.02" 150.1  STF 813  BCMRS,Ak
     X  7838:  B star is X 79582
21 d   95001* 8.1   92+ : **  9.1  9.1  0.10"  90.0  OCc  28  ACHMS,ChIW
21 D   95127  7.2   93+ : **  8.4  8.4  0.02"   0.0  OCc 450  ABCMPRS
21 d   95183  9.2   93+ : AB  9.3 11.3  0.51"  66.4  A  2443  P
21 d   95252# 8.1   93+ : AB  8.33 9.78 0.28" 157.8  COU 471  P
22 d    1043  8.2   97+ : **  8.4  8.4  0.10" 302.0  OCc 601  ,ChIW
22 d   96172* 8.0   97+ : **  8.9  8.9  0.05" 350.0  OCc1332  BRS,AkChIW
22 d   96178* 8.5   97+ : **  9.2  9.2  0.05" 153.0  OCc 405  R
22 d   96277* 7.6   97+ : AB 12.0 12.5  3.2"  138.4  COU 769  BR,Ak
22 d  *** Kepler Stars occulted, light curves are desired     BPRS
22 d   96343# 8.7   97+ : AB  9.0  9.9  0.59" 270.4  BU  899  ABCHMPRS
   *** 96343 is a Kepler2 star {ID = 202059435}
22 d   96378* 8.1   98+ : **  8.9  8.9  0.20" 100.0  OCc1342  P
22 d   96427* 8.3   98+ : **  9.0  9.0  0.05" 115.0  OCc 378  P
23 d   97168  7.8   99+ : **  8.8  8.8  0.10" 100.0  OCc 344  ,Ak
23 d   97296# 8.3  100+ : AB  8.63 9.64 0.25"  55.7  HDS1114  BRS,Ak
24 d  *** Kepler Stars occulted, light curves are desired     BRS,AkChW
25 r X 14553# 9.5   97- : AB  9.6 10.3  2.4"  348.3  HJ  165  BR 
25 R    1441  6.4   97- : AB  6.4  6.9  0.03" 110.4  MCA  34  P
26 r  118292  7.7   94- : AB  7.8  9.1  3.6"   74.2  STF1431  ABCMRS,AkChIW
      118292:  B star is X 118221 
26 r  118378  8.2   93- : **  9.3  9.3  0.10"  90.0  OCc 178  P
27 r  *** Kepler Stars occulted, light curves are desired     ABCHMPRS,AkChIW
27 r  118820# 8.1   87- : AB  8.8  8.8  0.19"  60.9  A  2776  P
   ***118820 is a Kepler2 star  {ID = 201729267}
28 r X 17923  9.8   81- : AB 10.4 10.6  0.50" 191.8  TDS8161  ,AkIW
28 r    1732  6.8   81- : **  7.6  7.6  0.10" 129.0  OCc 708  HM
28 r  119205  9.4   80- : AB 10.28 10.1 0.20"  36.8  RST5363  ABCHMRS
30 r  *** Kepler Stars occulted, light curves are desired     ABCHMRS,AkChIW

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

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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