Grazing Occultation of     989SK0      Magnitude 6.7 [Red = 5.9]   
   R989 = 15 Geminorum
Date: 2012 Mar 03  4h 38m,  to  2012 Mar 03  4h 47m

Nominal site altitude 236m

E. Longit.   Latitude     U.T.    Sun  Moon   TanZ   PA    AA      CA
   o  '  "    o  '  "   h  m  s   Alt Alt Az          o     o      o
- 97  0  0   41 56 48   4 37 59       53 247  0.76  15.7  14.31  14.14N
- 96 45  0   41 50 25   4 38 27       52 248  0.77  15.8  14.35  14.18N
- 96 30  0   41 44  1   4 38 56       52 248  0.78  15.8  14.39  14.22N
- 96 15  0   41 37 34   4 39 24       52 249  0.78  15.9  14.43  14.26N
- 96  0  0   41 31  5   4 39 52       52 249  0.79  15.9  14.46  14.29N
- 95 45  0   41 24 33   4 40 21       52 250  0.79  15.9  14.50  14.33N
- 95 30  0   41 18  0   4 40 49       51 250  0.80  16.0  14.53  14.36N
- 95 15  0   41 11 24   4 41 17       51 251  0.81  16.0  14.57  14.40N
- 95  0  0   41  4 45   4 41 46       51 251  0.81  16.0  14.60  14.43N
- 94 45  0   40 58  5   4 42 14       51 252  0.82  16.1  14.64  14.47N
- 94 30  0   40 51 22   4 42 42       50 252  0.83  16.1  14.67  14.50N
- 94 15  0   40 44 37   4 43 10       50 253  0.83  16.1  14.71  14.53N
- 94  0  0   40 37 50   4 43 38       50 253  0.84  16.2  14.74  14.57N
- 93 45  0   40 31  1   4 44  7       50 254  0.85  16.2  14.77  14.60N
- 93 30  0   40 24 10   4 44 35       49 254  0.85  16.2  14.80  14.63N
- 93 15  0   40 17 17   4 45  3       49 255  0.86  16.3  14.83  14.66N
- 93  0  0   40 10 21   4 45 31       49 255  0.87  16.3  14.86  14.69N
- 92 45  0   40  3 24   4 45 59       49 255  0.88  16.3  14.89  14.72N
- 92 30  0   39 56 25   4 46 27       49 256  0.88  16.4  14.92  14.75N
- 92 15  0   39 49 23   4 46 55       48 256  0.89  16.4  14.95  14.78N
- 92  0  0   39 42 20   4 47 23       48 257  0.90  16.4  14.98  14.81N

Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level.

Projected diameter of star  4 meters  [Estimated]

989 is multiple: 
  AB 6.7 8.2 25.1" 202.9 (SHJ  70) Graze path of B 51.64 km north, and 7.4 secs earlier compared to A
  AC 6.7 12.4 83"  35.1 (SHJ  70) Graze path of C 163.12 km south, and 68.4 secs later compared to A
  AD 6.7      88"  50.1 (JRN  28) Graze path of D 151.51 km south, and 124.3 secs later compared to A
  AE 6.7      112"  44.0 (JRN  28) Graze path of E 204.60 km south, and 131.6 secs later compared to A
  AE 6.7      112"  44.0 (JRN  28) Graze path of E 204.60 km south, and 131.6 secs later compared to A

                Librations  Long -6.86   Lat +3.44
                            P +14.24     D -4.80
      Illumination of moon  70%+
        Elongation of Moon  114
    Vertical Profile Scale  2.11 km/arcsec at mean distance of moon
   Horizontal Scale Factor  1.48 deg/min


At longitude -94.50:
Limiting Magnitudes for various telescope apertures (in cm)
      CA\Tdia   5    10    15    20    25    30    35
    10.5      5.7   7.1   7.9   8.5   8.8   9.1   9.3
    12.5      5.7   7.1   7.9   8.5   8.8   9.1   9.3
    14.5      5.7   7.2   8.0   8.5   8.8   9.1   9.3
    16.5      5.7   7.2   8.0   8.5   8.9   9.1   9.3
    18.5      5.7   7.2   8.0   8.5   8.9   9.1   9.3

------------------------------------------------------------------------------
Double star catalogue details
WDS entries 
 
  RA  Dec Name          Y1   Y2     N  PA  PA   Sep   Sep  M1    M2 
06278+2047SHJ  70AB    1782 2010   49 210 203  32.7  25.5  6.65  8.18 K2III     -035-042 -008-011 +20 1427 NLD  062746.58+204722.6 
06278+2047SHJ  70AC    1911 2000    3  34  35  77.7  82.5  6.65 12.4  K2III     -035-042                   N D  062746.58+204722.6 
06278+2047JRN  28AD    1984 1999    2  52  51  86.4  87.3  6.65       K2III     -035-042                   N D  062746.58+204722.6 
06278+2047JRN  28AE    1984 1999    2  44  44 109.5 110.6  6.65       K2III     -035-042                   N D  062746.58+204722.6 
06278+2047JRN  28AF    1984 1999    2  33  33 115.0 116.2  6.65       K2III     -035-042                   N D  062746.58+204722.6 
 
------------------------------------------------ 
Interferometric catalogue entries 
 
062746.58+204722.6  ADS  5080                 SHJ  70AB                 HD  45352    HIP  30757+56      06278+2047 N   
    Date       PA              Sep                  M1             M2 
  1991.25     201.2     .     24.69       .         6.68    .      8.79    .       550       0.3   1  HIP1997a Thp     
  1991.25        .      .       .         .         6.650  0.008   8.420  0.029    530 100   1.4   1  TYC1997  Tty     
  1991.25        .      .       .         .         8.134  0.014   9.622  0.046    430  90   1.4   1  TYC1997  Tty     
  1991.25        .      .       .         .         6.680  0.038   8.785  0.195    511 222   0.3   1  HIP1997f Thp     
  1991.25     202.83    .     25.755      .         6.673   .      8.566  0.011    550       0.3   1  Fab2000b Thp     
  1991.67     203.1     .     25.769      .         6.65    .      8.18    .       530 100   1.4   1  TYC2000b Tty     
  2002.901    202.4     .     24.97       .          .      .       .      .       550  24   0.7   1  WSI2004a Sus     
 

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Results of Observer Scan                                    UT
Site                              Long.   Lat.   Dist.    h  m  s
C  2 Nebraska CNE Lanning~Eugene  -95.9   40.7    78km    4 39 59
C  4 Blue SprinMO Sandy~Robert L  -94.3   39.0   169km    4 42 59