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


The list shows occultations of possible double stars during June. 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 June 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.

The list below is generated by OCCULT for a 25cm telescope. Some of the events could be beyond the reach of smaller telescopes. 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 nights on which they are occulted are indicated. Individual Keplers are only shown if they are also a known or possible double. Light curve of occultations of all Kepler stars are desired.

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.

NEW - ARCHIVING OF OCCULTATION LIGHT CURVES

For ALL lunar occultations: single, double and Kepler K2 stars a csv file should be prepared for archiving. This can be done through the OBSERVATIONS EDITOR of OCCULT.

It will be necessary to generate a light curve using LIMOVIE and save or copy its csv file. You will also need to note the time, hh:mm:ss.sss of one frame and the corresponding frame number.

Then in the Observations Editor select the entry for the star and use the menu bar option to create a Light Curve Report. Follow the instructions on the new screen which appears. There is a help file. It is suggested that light curve reports be emailed in batches rather than singly. They are sent directly to Dave Herald from the program.

********************************************************************************
 d P    Star  Mag    %         Double details        WDS or   Area of
Jun      No    v    ill      magnitudes sepn    PA?  OCC #    Visibility
 1 r   *** Kepler Stars occulted, light curves are desired    ,AkChIW 
 2 r   92989  9.2    8- : **  9.7  9.7  0.05"  74.0  OCc 980  ,Ak
 2 r   92992  8.7    8- : **  9.5  9.5  0.30"  86.0  OCc 983  ,AkW
 2 r X 62625  9.6    8- : AB  9.7 10.0  1.4"  292.8  HLD  63  ,I
 2 R   93032  9.2    7- : AB  9.0 12.5  1.3"  318.6  A  2335  BCMS

 7 d   *** Kepler Stars occulted, light curves are desired    ,AkChIW
 7 d X 10426  8.7    6+ : AB  8.8 10.4  3.1"   70.8  J   728  ,I
 7 d   96489  9.0    6+ : AB  9.2 10.7  0.8"  205.1  COU 584  B,I
 7 d X 98105 10.7    6+ : Aab10.9 11.5  0.9"  182.0  TDS4493  BCMS
 7 d X 98136 10.7    6+ : AB 10.9 11.0  4.1"  117.3  BRT2369  R
 7 d   96575  7.7    7+ : **  8.6  8.6  0.10"  89.0  OCc 957  CM
 7 d   96579  9.2    7+ : **  8.8  8.8  0.10" 309.0  OCc 899  MR
 7 D   96573*?8.2    7+ : **  9.4  9.4  0.10"  90.0  OCc1344  R
 9 d   *** Kepler Stars occulted, light curves are desired    BCMRS,AkChIW
 9 D    1346  8.8   21+ : AB  8.8 11.6  0.98" 329.7  HU  863  BCMRS,AkChIW
       *** 1346 is a Kepler2 star  {ID = 211604395}
 9 d   98334  9.3   22+ : AB  9.4 11.0  19.1" 120.9  HJ  115  BCMRS
       *** 98334 is a Kepler2 star  {ID = 211582554}
10 d   98827*10.0   30+ : AB 10.5 10.9  0.60" 113.0  TDS6882  BR
11 d  118477  8.9   40+ : AB  8.9 11.9  1.10" 277.0  HDS1537  M,I
11 d X 16210  8.8   41+ :     8.8  9.9  4.3"   77.5  OCc1421  R
12 d   *** Kepler Stars occulted, light curves are desired    M,I
12 d  118942? 7.2   51+ : AB  7.2 12.9  3.9"   84.6  A  2777  BCMRS
13 d  119310  9.5   60+ : AB  9.4 11.4  0.40"  64.0  A  2582  BCMRS,AkChIW
13 d  119340  8.3   60+ : **  9.3  9.3  0.10"  90.0  OCc  15  BCMRS,AkChIW
14 D    1869  6.2   68+ : AB  6.18 8.78 0.65" 181.9  AGC   5  ,AkChIW
14 D    1875# 6.7   69+ : AB  7.12 7.65 0.51" 192.5  BU  929  BCMRS,AkChIW
         1875:  B star is X125304  
14 d    1882  8.3   70+ : **  9.1  9.1  0.15"  50.0  OCc1446  BR
14 d  139158  8.2   70+ : AB  9.3  9.6  1.4"  198.7  BRT 444  BR
15 d   *** Kepler Stars occulted, light curves are desired    BCMRS
15 D    1978  6.6   77+ : **  7.4  7.4  0.10"  90.0  OCc1454  CM,I
15 d  139582  8.4   78+ : **  8.9  9.5  0.04" 129.0  OCc1023  CMS,ChIW
15 d  139592  7.7   78+ : **  8.1  8.7  0.02"  97.0  OCc1024  ,I
15 D    1994  6.6   78+ : AB  6.7  7.3  3.6"  100.3  STF1788  BCRS
       *** 1994 is a Kepler2 star  {ID = 212708104}
        1994:  B star is X127461 
15 d    2008* 6.6   79+ : **  7.4  7.4  0.05" 350.0  OCc1456  CM  
       *** 2008 is a Kepler2 star  {ID = 212703886}
16 d  158757  8.8   86+ : **  9.7  9.7  0.10"  90.0  OCc  42  ,I
16 d  158781  8.7   86+ : **  9.5  9.5  0.05"  12.0  OCc 623  CM
17 d    2184  7.3   90+ : AB  7.0       0.20" 153.7  CHR  44  ,Ch
17 d  159305  9.3   92+ : **  9.6  9.6  0.10"  90.0  OCc  21  M,I
18 d   *** Kepler Stars occulted, light curves are desired    BCMRS,AkChIW
18 d  159822  7.8   96+ : **  8.6  8.6  0.10"  90.0  OCc  18  BCMS,AkChIW
18 d  159852  9.1   96+ : AB  9.2 10.6  1.2"  320.6  HU  311  B
18 d    2365  7.3   97+ : AB  7.60 8.78 0.27"  54.3  RST3950  M
19 d  160325# 9.1   99+ : AB 10.01 9.67 0.40"  94.9  HU  168  R
19 d  160421# 8.6   99+ : AB  8.9 10.0  1.00"  53.7  STN  33  BR
19 d    2447* 8.0   99+ : **  8.2  8.7  0.04" 132.0  OCc1497  CMS,AkChIW
19 d    2495  6.0   99+ : AB  6.34 7.56 2.42" 263.4  BU  126  BCMRS
        2495 B star is X141441

20 r X 43398  7.4  100- : **  8.8  8.8  0.05" 350.0  OCc1528  BRS
21 r  161834  7.5   99- : AB  7.75 9.0  0.40" 153.2  RST3198  B,AkW
21 R   *** Kepler Stars occulted, light curves are desired    BCMRS,AkChIW
21 r  162160* 8.4   98- : **  9.4  9.6  0.12"  26.0  OCc 546  BCMRS,ChI
22 r    2871  7.3   96- : AB  7.2  7.4  9.9"  236.1  S   722  ,ChIW
        2871:  B star is 2870
22 R    2903* 7.7   95- : **  8.7  8.7  0.05" 161.0  OCc 918  BCMRS,AkChW
23 r  163765  8.9   90- : AB  9.1 10.9  0.60" 279.5  RST4066  ,ChIW
23 R    3015  5.2   90- : AB  5.38 7.31 0.32" 122.5  HU  200  BCMRS,AkChIW
23 r  163793  7.8   90- : AB  7.8 11.0  2.89" 226.7  HO  135  ,I
23 r  163844  8.8   90- : **  9.0  9.6  0.10" 350.0  OCc  20  BCRS,Ak
24 r    3155  6.7   83- : **  7.6  7.6  0.10"  90.0  OCc1605  ,AkW
24 r X 50758  9.1   81- : AB  9.2 10.2  1.0"  354.9  LV   10  M,AkChIW
25 r    3296  8.1   74- : **  9.5  9.5  0.30"  90.0  OCc1626  ,AkChW
25 r   *** Kepler Stars occulted, light curves are desired    ,AkChW
25 r    3306  7.8   73- : AB  7.8  8.6  8.8"  329.6  STF2913  BCMS,AkChIW
       *** 3306 is a Kepler2 star  {ID = 206308169}
        3306:  B star is X182873     
25 R    3322  6.4   72- : AB  6.64 8.11 0.13" 272.4  A  2695  BR
26 r  146772  9.2   61- : **  9.8  9.8  0.10"  90.0  OCc 155  BCRS,ChI
27 r  109113  7.9   51- : AB  7.9 10.3  9.9"  214.3  STF  23  ,AkChW
27 r X   316  9.4   51- : AB 10.1 10.2  0.40"  67.0  TDS1388  ,AkW
28 R   *** Kepler Stars occulted, light curves are desired    CMS
29 R     334  8.5   27- : **  9.0  9.6  0.10" 352.0  OCc 574  BCMRS

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

Visibility codes:
Australia: B Brisbane, C Canberra, M Melbourne, 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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