Graze logo

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


The list shows occultations of possible double stars during May. 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 May 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
May      No    v    ill      magnitudes sepn    PA?  OCC #    Visibility

 1 r  *** Kepler Stars occulted, light curves are desired     BCMRS,AkW
 2 r  146520  9.1   22- : AB  9.1 11.1  6.5"  170.2  J  1420  BCMRS,Ak
 3 r  128612* 9.7   12- : **  9.9  9.9  0.10"  90.0  OCc 124  CMS
 4 r  *** Kepler Stars occulted, light curves are desired     BCMRS,AkChIW
 4 r X 57494  9.0    6- : Bab 7.3 12.0  0.30"  39.0  TOK 202  BCMRS
                        :     9.0  7.3  1.1"   67.6  OCc1157  BCMRS
      *** X 57494 is a Kepler2 star  {ID = 220384956}
 4 R  109599  7.7    6- : **  8.3  9.5  0.10" 356.0  OCc 965  ,ChIW
      *** 109599 is a Kepler2 star {ID = 220405962}

 9 d X 75348 10.2    9+ : AB 10.4 10.4  4.3"  333.8  J   246  BCRS
 9 d   94663  9.0    9+ : AB  9.7  9.6  0.39" 311.3  A  2354  BRS
 9 D   94678* 7.6    9+ : **  7.7  8.7  0.8"   96.0  OCc1266  BCMRS
10 d  *** Kepler Stars occulted, light curves are desired     BCMRS,AkChIW
10 d   95826# 9.2   17+ : **  9.7 10.4  0.05" 285.0  OCc1800  BC,Ak
11 d X 33939  9.7   25+ : AB 9.7 b10.8b 3.5"b 183.7  J   706  ,AkChIW
11 d    1142  8.0   26+ : AB  8.0 11.8  3.6"  118.2  A  2871  M,I
11 d   97084* 9.4   27+ : **  9.8  9.8  0.10" 270.0  OCc 338  M
11 D    1158* 5.0s  27+ : **  6.0  6.0  0.03"  24.0  OCc 367  M
12 d  *** Kepler Stars occulted, light curves are desired     BCMRS,AkChIW
12 d X109760 10.1   36+ : AB 10.3 10.8  2.2"  145.3  HEI 144  BRS
      *** X109760 is a Kepler2 star {ID = 211694046}
13 d   98497  9.4   46+ : **  9.8  9.8  0.10"  90.0  OCc 214  ,AkChIW
16 d  *** Kepler Stars occulted, light curves are desired     BCMRS,AkChIW
17 d  138868  8.9   83+ : AB  8.9 12.0  4.4"  199.9  BAL 872  MS,ChIW
18 d  *** Kepler Stars occulted, light curves are desired     CMRS
19 d  *** Kepler Stars occulted, light curves are desired     BCMRS,AkChIW
19 D    2008  6.6   94+ : **  7.4  7.4  0.05" 350.0  OCc1456  ,AkChW  
      ***   2008 is a Kepler2 star  {ID = 212703886}
19 D    2020  6.5   95+ : **  7.4  7.4  0.10"  90.0  OCc1457  BCMRS,AkChW
      ***   2020 is a Kepler2 star {ID = 212673769}
20 d  158781  8.7   98+ : **  9.5  9.5  0.05"  12.0  OCc 623  ,AkW

22 r    2365  7.3   99- :  AB 7.60 8.78 0.27"  54.5  RST3950  CMS,ChIW
22 r  *** Kepler Stars occulted, light curves are desired     BCMRS,AkChIW
23 R    2495  6.0   97- : AB  6.3  7.6  2.42" 263.4  BU  126  BCMRS,AkChIW
                        : AC  6.3 11.2  12.1" 137.5  BU  126  BCMRS,AkChIW
        2495:  B star is X141441 
23 r  160513  8.6   97- : **  9.2  9.2  0.10"  90.0  OCc  14  BCS,AkChW
23 r  160580  8.7   97- : AB  8.8  9.4  8.4"  194.2  HJ 2806  MS,AkChIW
      160580:  B star is S 160579  
23 r  160598  9.0   97- : **  9.9  9.9  0.10"  90.0  OCc  11  CMS,AkChIW
24 r  *** Kepler Stars occulted, light curves are desired     BCMRS,AkChIW
24 R    2647* 6.5   93- : **  7.2  7.2  0.10" 270.0  OCc  12  BRS,Ak
24 R    2653  6.8   93- : AB  7.2  8.2  0.49" 139.0  BU  639  R
      ***   2653 is a Kepler2 star  {ID = 227249894}
24 r  161463# 8.4   92- : AB  8.6 10.1  0.10" 117.2  CHR 236  BR
25 r  *** Kepler Stars occulted, light curves are desired     BCMR,AkChIW
25 r  162160  8.4   87- : **  9.4  9.6  0.12"  26.0  OCc 546  ,AkChW
25 R    2808  7.5   86- : AB  7.6 11.0  24.9"  75.7  HWE  97  ,AkChIW
      ***   2808 is a Kepler2 star  {ID = 219181570}
25 r X 45748  9.6   86- : AB  9.7 10.1  1.8"    3.6  HU  262  BCMRS,AkChW
      ***  X 45748 is a Kepler2 star {ID = 219039523}
28 R    3205* 6.9   59- : **  7.6  7.6  0.10"  90.0  OCc1612  BCMRS,AkChIW
28 R    3208  6.5   59- : AB  8.66 6.71 0.09" 143.2  FIN 358  M,AkChIW
28 r  164784! 8.4   58- : **  8.9  9.5  0.05" 234.0  OCc1670  BCMRS,ChIQ
28 r    3226# 8.3   57- : AB  9.85 8.62 0.19" 185.0  RST4095  MS
29 r  146289  8.5   48- : AB  8.88 9.67 0.21" 312.2  CHR 207  ,AkChIW
29 r X 52588  9.4   47- : AB  9.5 10.6  1.7"    0.9  HLD  53  BCMS,AkChIW
29 R  146344  7.8   47- : **  8.6  8.6  0.25"  70.0  OCc1629  R
29 r  146374  8.4   47- : **  9.2  9.2  0.10" 109.0  OCc 976  BCMRS,I
                        : AB  8.4 10.6  9.8"  250.9  HDS3253  BCMRS,I
30 r  146825  8.7   37- : **  9.7  9.7  0.03" 120.0  OCc1645  ,ChIW
30 r  146899  9.8   35- : **  9.9  9.9  0.10"  38.0  OCc 977  ,ChI
30 r  146905  9.3   35- : **  9.6  9.6  0.03"  54.0  OCc 978  M,I
31 r  *** Kepler Stars occulted, light curves are desired     BCMRS,AkChIW
31 R  109323* 7.7   25- : **  9.1  9.1  0.20" 355.0  OCc 979  ,ChIW
31 r  109325  9.5   25- : AB 10.2 10.3  0.7"  155.5  A  2302  ,AkChW
31 r X 56255 10.5   25- : AB 11.2 11.4  0.60" 218.0  TDS1579   R
      *** X 56255 is a Kepler2  star {ID = 220288853}


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

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


[Site Map] [What's an Occultation?]
[Total Occultations] [Grazing Occultations] [Planetary Occultations] [Jovian Satellite Eclipses]
[Timing Occultations] [Reporting Observations] [Coming Events] [Software]
[About Us] [Publications] [Membership] [Links]

[Top of Page][Return to Home Page]