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


The list shows possible double stars, with separations less than 2", predicted to be occulted by the Moon during August 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
Aug      No    v   ill      magnitudes sepn    PA°   OCC #    Visibility
 1 d    1786  8.6   24+ : AB  8.9 10.0  0.37"  87.9  A    79   ,I
 1 D    1795  6.9   25+ : **  7.9  7.9  0.10"  90.0  OCc1437   ACHMPS
 2 d  139226  9.2   33+ : AB 9.31 12.1  0.40"   4.0  HDS1851   BR
 3 d  158296  9.1   43+ : **  9.4  9.7  0.04" 222.0  OCc 522   B
 5 D    2271  4.1   65+ : **  5.1  5.1  0.05" 196.0  OCc 985   AAsBHMRS,AkChW
 5 d  159601  8.8   65+ : AB  8.9 11.9  0.70" 117.0  HDS2248   ABCMPRS,ChIW
 5 d    2308  7.9   67+ : AB  7.6  9.0  1.0"   49.0  KOU  51   P
 6 d  160088  9.7   74+ : AB 10.1 11.3  0.15" 332.2  HU  313   ,I
 7 D X144366  7.6   84+ : AB  7.6 10.3  1.00" 311.0  HU  186   H,I
     X144366:  B star is ZC2555
 7 d  160935  9.1   85+ : AB  9.9 10.0  0.30" 168.5  A  2254   H,AkChIW
 7 d  160994  8.4   85+ : AB  8.8  9.8  0.40" 153.7  A  2256   ABCHMS,ChI
 8 d X 44881* 8.6   92+ : AB  8.7  9.8  1.3"  165.5  HU  255   ACHM,AkChIW
     X 44881:  B sar is X161276
 8 d  161970# 9.4   92+ : AB 10.2 10.2  0.54" 297.5  RST3205   AAsBMRS,AkChIW
 8 D    2768* 7.8   92+ : **  9.2  9.2  0.10"  90.0  OCc1563   AAsBMPRS
 8 d  162251  8.1   93+ : **  9.2  9.2  0.10"  90.0  OCc1570   AAsCHM,Ch

11 r  145799! 9.0   99- : **  9.2 10.7  0.02" 265.5  OCc1688   CHMS,AkChIW
11 r    3230* 8.4   99- : **  9.2  9.2  0.10" 131.0  OCc 869   AAsBCHMPRS,Ak
12 r    3366  6.6   95- : **  7.1  7.5  0.04" 199.0  OCc 256   ABCHMRS,AkW
12 r  146406! 8.6   95- : **  8.8 10.3  0.03" 274.8  OCc1675   BCRS,AkW
12 r  146434  7.8   95- : AB  7.9 10.8  0.70" 227.6  RST3205   ,AkChIW
13 r  128429  8.1   89- : AB  8.2 12.0  1.99" 155.2  A  2198   ,AkChW
13 R    3515* 6.3   89- : **  7.0  7.0  0.05" 350.0  OCc1650   ,I
13 r  128445  8.6   89- : AB  8.3 11.2  1.87"  70.9  RST5491   ,AkChIW
13 R       1  7.2   88- : AB  7.40 9.36 1.61" 159.9  BU  281   AsP
       ZC  1:  B star is X 54229
14 r     131  7.9   79- : **  9.0  9.0  0.10" 270.0  OCc1152   ,AkChIW
14 R     142  7.6   78- : **  8.6  8.6  0.05" 350.0  OCc1154   CHMS,ChI
14 R     146* 4.3   78- : **  5.2  5.2  0.25"  29.0  OCc 480   ABCHMRS,Ch
15 R     272  5.9   69- : **Aab 6.7 6.7 0.10" 121.0  OCc 435   ABCHMRS,AkChIW
15 r X  2822  8.3   67- : AB  8.7 10.5  1.70" 143.0  A  2216   P
16 r X 63280  7.9   59- : AB  7.95 10.7 0.74" 124.6  HU 1046   BCRS,Ak
     X 63280:  B star is ZC 406   (Confusion between A & B?) 
17 R     532  7.1   47- : **  8.0  8.0  0.021" 65.0  OCc1210   ABCHMS,AkChIW
19 R   94684  7.2   27- : AB  7.2 10.9  0.80"  69.3  HDS 749   P
21 R   96573  8.2*  13- : **  9.4  9.4  0.10"  90.0  OCc1344   ,AkChIW
21 r X 98715 10.1   13- : AB 10.5 11.4  0.9"  107.0  TDS4549   ,AkChIW 
21 R   96647  8.3#  12- : AB  8.44 9.85 1.01" 103.6  A  2525   ABCHMRS
       96647:  B star is X 99289
21 r   96727  9.0*  12- : **  9.8  9.8  0.10"  90.0  OCc   3   P 

27 d X121340  9.8    3+ : AB 10.4 10.8  0.60" 286.6  RST5354   S
30 D    1973  6.2   19+ : A B 6.4  8.0  0.03"  71.2  KUI  65   ,AkChIW

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

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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