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Lunar Occultations of Close Double Stars in May 2014 for Australia and NZ


The list shows possible double stars, with separations less than 2", predicted to be occulted by the Moon during May 2014 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.

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     760# 6.6    9+ : AB 7.02 7.56  0.96" 296.6   STT  95  ,ChW
         760:  B star is X 72361
 2 D     769  6.5   10+ : **  7.4  7.4  0.10"  82.0   OCc 636  H
 3 d   95160  9.4   17+ : Aa,b 9.6 11.7 0.09" 162.0   HDS 823  ABCHMRS
 3 d   95183  9.2   17+ : AB  9.3 11.3  0.51"  66.3   A  2443  AAsBCHMRS
 4 D   96172* 8.0   24+ : **  8.9  8.9  0.05" 350.0   OCc1332  ,ChI
 4 D   96178* 8.5   24+ : **  9.2  9.2  0.05" 153.0   OCc 405  ,AkChIW
 4 D   96277* 7.6   25+ : AB 12.0 12.5  1.6"  129.0   COU 769  ACHM,Ch
       96277: graze near Canberra
 4 D    1072  6.0   26+ : **  7.0  7.0  0.03" 197.0   OCc 411  P
 5 d X104056 10.2   33+ : **  dMag 1.7  0.22" 238.3   OCc1371  ,AkChIW
 5 d    1190* 7.2   35+ : **  7.9  7.9  0.03" 158.0   OCc 379  P
 6 D    1271  5.9   42+ : **  6.2  7.0  0.05" 350.0   OCc 554  ,AkChIW
 6 D   97952* 7.4   43+ : **  8.7 10.0  0.05" 311.4   OCc 371  AAsBCHMPS
 7 D   98491* 8.0   52+ : AB  8.0 11.4  1.35"   7.5   A  2975  BCMS,AkChIW
 7 d   98549  8.1   53+ : **  8.9  8.9  0.10" 321.0   OCc 549  AAsBCHMPRS,I
 8 D    1478  7.3   61+ : **  8.0  8.0  0.10"  90.0   OCc1410  ,I
11 d  138762  8.1   86+ : **  9.1  9.1  0.05" 350.0   OCc1435  ,AkChW
11 d  138777  7.8   87+ : AB  8.03 9.37 0.39" 106.0   BU  922  ,AkCh   
11 D    1787  6.2   87+ : **  6.8  6.8  0.05" 350.0   OCc1436  BR,AkW
11 d  138857#?8.1   88+ : AB  8.49 9.34 0.07" 258.2   RST4502  AAsBCHMPS,AkChIW
13 d  158532  7.9   98+ : AB  8.0 10.2  0.20" 230.7   HDS2027  ABCHMPS,AkChIW

15 r  159786  7.7   99- : AB  9.9  7.9  0.033" 12.0   CHR 233  BR
16 r  160378  8.6   96- : **  8.9  9.5  0.04"  66.0   OCc 992  AAsBCHMPS,AkChIW
17 r X 43398  7.4   90- : **  8.8  8.8  0.05" 350.0   OCc1528  BR,Ak
17 R    2647  6.5   89- : **  7.2  7.2  0.10" 270.0   OCc  12  AAsBCHMPRS,AkW
        2647: Graze near Hobart
17 R    2653  6.8   89- : AB  7.2  8.2  0.50" 139.3   BU  639  AsBR
17 r  161463# 8.4   88- : AB  8.6 10.1  0.10" 115.0   CHR 236  As
17 r  161468* 7.9   88- : **  9.0  9.5  0.05" 350.0   OCc1547  AAsHMP
17 r  161479* 8.4   88- : **  9.2  9.8  0.40" 214.0   OCc 541  As
18 r  162251  8.1   82- : **  9.2  9.2  0.10"  90.0   OCc1570  ,AkChIW
18 r  162460  9.2   81- : AB  9.3 11.3  0.30"  51.0   RST3221  AAsBCMRS,Ak
19 R  163440  7.5   71- : AB  7.6 10.5  1.20" 252.8   RST4057  AsBRS
19 R    2975* 7.0   70- : **  7.8  7.8  0.05"  20.0   OCc 476  AsR
19 r  163469! 9.1   70- : **  9.7 10.0  0.02" 125.2   OCc1727  ACHMPS,AkChIW
20 r  164231  9.2   60- : **  9.2 10.4  0.02" 228.1   OCc 420  BCRS,AkW
20 r  164300! 9.9   59- : ** 10.4 10.9  0.06" 195.1   OCc1728  ABCHMS,AkChIW
20 r X 50234# 9.6   58- : AB  9.6 10.0  1.4"  346.8   HO  158  AP
     X 50234:  B star is X179240 
21 R  145973# 7.8   47- : AB  7.94 9.8  0.70" 280.0   A  2599  H,ChI
22 r  146434* 7.8   38- : AB  7.9 10.8  0.70" 227.6   HDS3274  ,Ak
23 r  128456  7.6   27- : AB  7.97 9.31 1.71" 272.5   STF3045  ,AkChW
      128456:  B star is X186845
24 R     131  7.9   16- : **  9.0  9.0  0.10" 270.0   OCc1152  AAsCHMS
24 R     142  7.6   15- : **  8.6  8.6  0.05" 350.0   OCc1154  P
24 R     146* 4.3   15- : **  5.2  5.2  0.25"  29.0   OCc 480  P
26 R X  3546  8.6    4- : AB  8.7 10.2  1.7"  131.0   BU 1315  ,AkChW
     X  3546:  B star is X 3549

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

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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