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


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

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 number of these is increasing, rather than list them all, the nights on which they are occulted are indicated. Individual Keplers are only shown if they are also a known or possible double. Light curves of occultations of all Kepler stars are desired.
Reporting of these events is still being sorted out, with a system in Occult coming soon. In the meantime please archive any observations of Kepler stars, keeping both the video and the light curve.

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
Mar      No    v    ill      magnitudes sepn    PA?  OCC #    Visibility
 1 r    2365  7.3   53- : AB  7.60 8.8 0.27"  55.1   RST3950  ABCRS,AkChIW
 1 r  *** Kepler Stars occulted, light curves are desired     AHMP,ChIW
 2 r  160517  8.6   42- : **  9.6 10.0  1.0"  320.0  OCc1501  ABCHMPRS,W
 2 r X 42373 10.1   41- : AB 10.1 11.3  1.7"  187.4  HU  171  ABCHMS
                        : AC 10.1 12.3  6.8"  210.0           ABCHMS
 2 r  160580  8.7   41- : AB  8.8  9.4  8.4"  194.2  HJ 2806  P
      160580:  B star is 160579
 2 r  160598  9.0   41- : **  9.9  9.9  0.10"  90.0  OCc  11  P
 3 r  161107  9.3   34- : **  9.4 11.0  1.0"   10.0  OCc1529  ,AkChIW
 3 r  161152  8.8   33- : AB  9.27 9.66 0.44" 235.2  RST3161  ,ChI
 3 R  161233! 7.5   32- : **  7.8  9.0  0.03" 260.4  OCc1796  ABCHMS,AkChIW
 3 r  161282  8.9   32- : Aab 9.5 10.1  0.40" 130.0  TDT 781  ABCHMPRS
                        : AB  9.1 12.5 10.4"  348.8  ARA 275  ABCHMPRS
 3 r X154524 10.1   32- : AB 11.3 12.3  2.1"   88.0  J  2206  H
 3 r X154978  9.8   32- : AB 10.4 10.6  0.40"  93.0           H
 3 R  161338* 7.0   32- : **  7.4  9.0  0.9"  315.0  OCc1541  ACHPS,W
 4 r  *** Kepler Stars occulted, light curves are desired     ABCHMPRS,AkChIW
 4 r  162251# 8.1   23- : **  9.2  9.2  0.10"  90.0  OCc1570  H,ChI
 4 r X164973!10.7   23- : ** 11.2 11.7  0.04" 269.1  OCc1806  ,ChI
   *** X164973 is a Kepler2 star  {ID = 219352487}
 4 R    2808  7.5   22- : AB  7.6 11.0 24.9"   75.7  HWE  97  ABCMRS
   ***  2808 is a Kepler2 star  {ID = 219181570}
 4 r X 45703 10.0   22- : AB 10.7 10.9  0.50"  93.0  TDT1329  BR
   *** X 45703 is a Kepler2 star {ID = 219122150}
 4 r  162460  9.2   22- : AB  9.3 11.3  0.30"  50.8  RST3221  P
   *** 162460 is a Kepler2 star  {ID = 219378499}
 4 r X167077 10.8   21- : AB 10.9 11.3  2.3"  100.0  LEO  26  P
 4 r X 45924  9.7   21- : AB 10.4 10.5  0.64"  50.4  HU  265  P
 5 r X172823#11.0   14- : AB 11.1 11.3  5.1"   29.7  FOX  91  ,AkI
 5 r  163324 10.6   14- : AB 10.8 12.7  1.12"  95.1  ARU  21  BR
 5 R  163356  8.7   14- : AB  9.4  9.4  8.8"  343.8  KUI  96  AMPR
 5 r  163371  8.6   13- : **  9.5 10.0  0.36" 252.0  OCc 407  AP
 5 r X 48000 10.8   13- : AB 10.6 10.9  3.2" 208.9   HU  268  p
     X 48000:  b Star is X173559
 6 r  164143# 8.4    7- : AB  9.20 9.20 0.31"  47.6  RST4693  CHMS
 6 r X 49950  9.5    7- : **  9.8  9.8  0.05"   5.0  OCc 973  P
 6 r  164225  9.4    7- : **  9.6  9.6  0.20"  26.0  OCc 974  P
 6 R  164233  9.0    6- : **  9.7  9.7  0.10"  90.0  OCc1600  P

12 D   92929  7.9   15+ : **  8.7 10.7  0.02" 191.6  OCc 680  AS,ChI
12 d   92923  8.5   15+ : AB  9.48 9.54 2.92" 251.6  STF 261  I
12 d X  3267 10.0   15+ : ** 10.0 10.8  3.4"   55.6  OCC1186  BR
                        : AB 10.8 10.9  4.7"  232.0  BRT1170  BR
     X  3267:  B star is X 3268
12 d   92964  8.6   15+ : **  9.5  9.5  0.10"  27.0  OCc 982  R
13 d  *** Kepler Stars occulted, light curves are desired     P
14 d  *** Kepler Stars occulted, light curves are desired     ABCHMRS,AkChIW
14 d   93884  9.2   35+ : **  9.8  9.8  0.10" 350.0  OCc 528  B
14 D   93913  7.0   35+ : **  7.6 10.6  0.18" 108.8  OCc 615  ABCHMRS,AkChIW
14 D   93914  7.8   35+ : AB  6.4  9.1  1.3"  241.3  PAT   6  BR
14 D     653* 4.8   35+ : **  5.6  5.6  0.04"  53.0  OCc 952  ACHM,ChI
14 d   93933  8.0   36+ : **  8.7  8.7  0.020" 23.0  OCc 553  BR
14 d   93958  7.8   36+ : **  9.0  9.0  0.50" 279.0  OCc 532  AMP
14 d   93962  7.0   36+ : **  7.0       0.01" 202.3  OCc1235  AP
15 d X 73658  9.4   46+ : AB  9.5 11.5  6.1"  308.8  COU  39         ,AkChIW
15 d     800# 7.9   46+ : Aab 8.22 9.28 0.26"  22.3  HDS 705  HM,I
15 d   94563  8.8   47+ : AB  8.8 10.4  1.1"  291.5  A  2432  AP
15 d     823  6.7   48+ : AB  6.8 10.4  3.12" 128.9  STT 108  A
16 d   95426* 8.7   56+ : **  9.4  9.4  0.10" 236.0  OCc 604  ,W
16 D     947  5.2   56+ : AB  5.2 11.2  7.0"  185.3  HJ 2302  ,AkChW
16 d  *** Kepler Stars occulted, light curves are desired     ABCHMPRS,AkChW
16 D   95475  7.2   57+ : AB  7.3 11.6  5.1"  134.6  BU  894  ,AkChIW
16 d X  9020* 9.1   58+ : **  9.2  9.2  0.06" 145.0  OCc1314  AP
   ***  9020 is a Kepler2 star  {ID = 202063053}
16 d   95557  9.3   58+ : AB  9.9 10.2  0.34"  94.7  A  2516  R
   *** 95557 is a Kepler2 star  {ID = 202059348}
16 D     985*?6.8   58+ : AB  6.7 11.5  3.1"  316.3  BU 1191  ABCHMRS
17 d   96620  8.9   67+ : AB  9.5  9.7  0.41" 215.0  AG  331  ,AkI 
17 d   96647# 8.3   67+ : AB  8.44 9.85 1.00" 103.8  A  2525  R
     96647:  B star is X 99289
17 d   96791* 7.8   69+ : **  8.7  8.7  0.05" 350.0  OCc 374  ABCHMPRS
17 d   96794* 8.0   69+ : **  8.9  8.9  0.05" 350.0  OCc 373  ABCHMPRS
18 d  *** Kepler Stars occulted, light curves are desired     ABPRS
18 D    1238  6.0   78+ : **  6.9  6.9  0.01" 350.0  OCc 311  ABCHMS,AkChIW
   ***  1238 is a Kepler2 star  {ID = 211743326}
18 d   97679  9.1   78+ : AB  9.8  9.8  0.64" 343.0  HEI 140  R
   *** 97679 is a Kepler2 star  {ID = 211693443}
19 d  *** Kepler Stars occulted, light curves are desired     ABCHPRS
19 d   98270  8.1   85+ : AB  8.64 9.19 0.18"  24.1  HU  861  ,AkChW
19 d   98334  9.3   85+ : AB  9.4 11.0 18.9"  120.7  HJ  115  CHM
   *** 98334 is a Kepler2 star  {ID = 211582554}
19 d   98380# 7.3   86+ : **  7.5  9.2  0.01"  52.0  OCc1686  HP 
19 d   98395  8.5   86+ : AB  8.6 11.8  2.30" 181.7  HU  867  AR
20 D    1441  6.4   91+ : AB  6.4  6.9  0.03" 123.4  MCA  34  ,AkChIW
20 d   98794  7.6   91+ : AB  6.0  8.5  0.8"  124.0  TOK  24  BR
20 d   98852  8.5   92+ : AC  8.8 11.1  3.8"  276.0  STF1396  ABCHMRS,AkChI
                        : AB  8.8 10.4  4.02" 130.0           ABCHMRS,AkChI
20 d   98879  9.3   92+ : **  9.7  9.7  0.10" 137.0  OCc 783  AR
20 d    1474  7.1   93+ : **  7.9  7.9  0.05"  20.0  OCc1409  P
21 d    1550  5.6   96+ : AB  5.80 7.90 2.09" 155.9  STF1450  ,I
21 d X 16210  8.8   97+ : **  8.8  9.9  4.3"   77.5  OCc1421  ACMP
21 d  118476  8.2   97+ : **  8.9  8.9  0.10"  90.0  OCc1419  BRS,Ak
21 d  118517  8.6   97+ : **  8.9  9.5  0.06" 303.0  OCc1422  AP
23 D    1772  3.9  100- : AB  3.9  5.9  0.12" 171.9  MCA  37  ABCMRS,AkChW

24 R    1869  6.2   99- : AB  6.18 8.78 0.65" 181.8  AGC   5  ACHMPS,ChIW
        1869:  B star is X125304
24 r    1875  6.7#  99- : AB  7.12 7.65 0.51" 192.6  BU  929  AHMP,I
24 r    1882  8.3   99- : **  9.1  9.1  0.15"  50.0  OCc1446  ABCHMPRS,ChI
24 r  139158  8.2   99- : AB  9.3  9.6  1.4"  198.8  BRT 444  ABCHMPRS,I
25 r  *** Kepler Stars occulted, light curves are desired     ABCHMpRS,AkChIW
25 R    1994  6.6   95- : AB  6.7  7.3  3.6"  100.3  STF1788  AHMPR 
        1994:  B star is X127461 
   ***  1994 is a Kepler2 star  {ID = 212708104}
25 r  139582  8.4   96- : **  8.9  9.5  0.04" 129.0  OCc1023  P
26 r  158781  8.7   90- : **  9.5  9.5  0.05"  12.0  OCc 623  P
27 R    2184  7.3   86- : AB  7.0       0.20" 153.8  CHR  44  ,AkChW
27 r  159305  9.3   84- :**ab 9.6  9.6  0.10"  90.0  OCc  21  AHMP
                        : AB  8.7 13.3  5.5"  313.4           AHMP
28 r  *** Kepler Stars occulted, light curves are desired     ABCHMPRS,AkChIW
28 r  159805 10.0   77- : ** 10.1 10.1  0.10"  90.0  OCc  17  BCMRS,AkChIW
   *** 159805 is a Kepler2 star  {ID = 205692130}
28 R  159822  7.8   77- : **  8.6  8.6  0.10"  90.0  OCc  18  ABCHMPR,IW
29 r  160209  8.7   70- : AB  9.2  9.6  0.7"  192.8  HU  162  BCHS,AkChIW
29 r  160219  8.6   70- : AB  8.7 11.0  0.20" 171.0  HDS2406  H,I
29 r    2447* 8.0   69- : **  8.2  8.7  0.04" 132.0  OCc1497  R
30 r  160935  9.1   59- : AB  9.9 10.0  0.30" 168.4  A  2254  BCRS,AkChW
30 r  160994# 8.4   58- : AB  8.8  9.8  0.40" 153.8  A  2256  ABCHMPRS
31 r  *** Kepler Stars occulted, light curves are desired     BPR
31 r X 44853#10.0   49- : ** 10.0 11.5  2.2"  235.6  OCc1553  BCRS,AkChW
31 r X 44881#?8.6   49- : AB  8.7  9.8  1.4"  165.4  HU  255  HM,ChI
     X 44881:  B star is X161276 
31 r X 44918  9.8   49- : AB  9.8 11.5  2.0"  341.0  HU  257  ACHMS,I
31 r  161970  9.4   48- : AB 10.2 10.2  0.55" 297.3  RST3205  ACHMPS
31 r X 45048# 8.6   48- : AB  8.8 10.8  3.8"    6.2  HJ845    ACHMPRS
31 R    2768*  7.8   47- : **  9.2  9.2  0.10"  90.0  OCc1563  P

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

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


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