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


The list shows possible double stars, with separations less than 2", predicted to be occulted by the Moon during July 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
Jul       No    v   ill      magnitudes sepn    PA°   OCC #    Visibility
 1 D    1414  9.0   14+ : **  9.0  9.5  0.40" 158.0   OCc 568  ABCHMRS
 2 D  118241# 7.4   21+ : AB  7.99 8.30 0.90" 312.6   STF1426  BCMS,AkChIW
      118241:  B star is X117966
 2 d  118253# 9.0   21+ : **  9.1  9.9  0.01" 174.7   OCc 569  CHMS,AkChIW
 4 d  138555  8.0   41+ : AB  8.7  8.57 1.29"  13.8   STF1593  P
      138555:  Bstar is X122844
 7 D  158532  7.9   69+ : AB  8.0 10.2  0.20" 230.6   HDS2027  AAsBCRS,AkW
 8 D  159188  7.4   79+ : AB  7.5  8.6  0.40" 124.0   MCA  41  H,ChIW
 9 d    2308  7.9   86+ : AB  7.6  9.0  1.0"   49.0   KOU  51  ,ChW
10 d  160378  8.6   94+ : **  8.9  9.5  0.04"  66.0   OCc 992  BCMRS,AkChIW
11 D    2647* 6.5   98+ : **Aab 7.2 7.2 0.10" 270.0   OCc  12  ABCMRS,AkChIW
11 d    2653  6.8   98+ : AB  7.2  8.2  0.49" 139.2   BU  639  AsBCRS 
11 d  161399  9.2   98+ : AB  9.8 10.7  0.10" 192.0   CHR 235  AsR
11 d  161463# 8.4   99+ : AB  8.6 10.1  0.10" 115.1   CHR 236  AsBCPS
11 d  161468* 7.9   99+ : **  9.0  9.5  0.05" 350.0   OCc1547  ACHMPS,AkChIW
11 d  161479* 8.4   99+ : **  9.2  9.8  0.40" 214.0   OCc 541  AAsBCPR
11 D    2686  5.1   99+ : **Aab 6.0 6.0 0.10"  90.0   OCc  22  AsR

12 r    2856  7.1  100- : **  6.8  8.5  0.20" 347.0   OCc1579  ABCRS
12 r    2883* 5.5  100- : A   5.5      0.014"  66.0   BUP 197  AH
12 r  162728  8.3  100- : AB  9.0  9.3  0.34" 273.1   HLD 152  As
12 r  162748  7.7  100- : **  8.2  8.2  0.05"  90.0   OCc   9  AsBPR
13 r    2975* 7.0   98- : **  7.8  7.8  0.05"  20.0   OCc 476  ABMRS,AkW
13 r  163440  7.5   98- : AB  7.6 10.5  1.20" 252.8   RTS4057  ,AkChW
13 r  163668# 8.3   98- : AB  9.14 9.22 1.22" 172.6   HO  163  AAsBCHMPRS,Ak
      163668:  B star is X175030
13 r  163677!?9.4   98- : **  9.8 10.7  0.05" 220.5   OCc1715  AAsBCHMPRS
14 R    3154* 7.4   93- : **  8.2  8.2  0.10"  90.0   OCc1604  AAsBCHMPRS,AkChIW
14 r  145567  8.7   92- : **  9.3  9.3  0.03"  95.0   OCc 347  AAsBCMPRS
14 r  145572# 9.1   92- : **  9.5  9.5  0.06"  68.0   OCc 348  AsPR
15 r    3290  7.3   86- : AB  7.3       0.60" 219.0   ARU  23  H,AkChIW
15 R    3320* 5.0   84- : **  6.1  6.1  0.10"  93.0   OCc 342  ABCHMRS,ChIW
15 R    3326#?6.4   84- : AB  6.52 8.63 0.25" 126.2   KUI 114  H
18 r  109763* 8.1   54- : **  9.2  9.2  0.20"  67.0   OCc 479  BCHMS,AkChIW
18 r  109814  9.6   53- : **Aab 9.5 9.5 0.40"   6.0   OCc 924  ,ChI
18 r  109817  9.1   53- : **  9.4  9.4  0.40" 141.0   OCc 925  AAsBCHMRS,Ak
19 r   92819  8.5   43- : **  9.3  9.3  0.04" 237.0   OCc 935  R
20 r X 64780 10.6   31- : AB 10.7 11.6  1.6"   78.0   TDS2464  As
22 r   94222  9.4   14- : **  9.9  9.9  0.30" 100.0   OCc 433  P
23 r X  7559 10.3    9- : AB 10.3 11.2  1.7"  228.1   COU 576  AAsCMS
23 r X 78856 10.0    8- : Aab 10.7 10.7 0.50" 113.0   TDS3379  P   
24 r   95945  9.4    4- : ** 10.0 10.0  0.50" 230.0   OCc 398  A
24 r   96011* 8.6    4- : **  9.4  9.4  0.05" 144.0   OCc1022  P

29 D    1478  7.3    5+ : **  8.0  8.0  0.10"  90.0   OCc1410  ,AkChW
29 D  118103  8.4    5+ : **  9.4  9.5  0.06" 299.0   OCc 259  ,AkChIW
29 d  118126  9.2    5+ : AB  9.8 10.0  0.72" 282.3   A  2564  H
29 d    1492  8.5    5+ : AB  8.8 10.29 1.37" 261.6   A  2565  HM

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

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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