May 20th Pi Scorpii Graze

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All times UT unless otherwise noted

Grazing Occultation of    2287SB1      Magnitude 2.9 [Red = 3.0]  e
   R2287 = pi Scorpii
Date: 2008 May 20  9h 36m,  to  2008 May 20 10h  0m
Nominal site altitude 50m
E. Longit.   Latitude     U.T.    Sun  Moon   TanZ   PA    AA      CA
   o  '  "    o  '  "   h  m  s   Alt Alt Az          o     o      o
-125  0  0   37 36 24   9 36 11       24 197  2.21  12.2   0.34  59.23N
-124  0  0   37 29 21   9 38 57       24 199  2.25  11.7 359.87  59.70N
-123  0  0   37 24 54   9 41 39       24 201  2.29  11.3 359.40  60.17N
-122  0  0   37 22 58   9 44 18       23 202  2.34  10.8 358.93  60.63N
-121  7 30   37 23 18   9 46 33       23 203  2.39  10.4 358.54  61.03N
-121  0  0   37 23 30   9 46 52       23 204  2.40  10.3 358.48  61.08N
-120  0  0   37 26 22   9 49 20       22 205  2.46   9.9 358.04  61.53N
-119  0  0   37 31 31   9 51 43       21 206  2.54   9.5 357.61  61.95N
-118  0  0   37 38 50   9 54  0       21 208  2.64   9.0 357.19  62.37N
-117  0  0   37 48 13   9 56 11       20 209  2.74   8.6 356.80  62.76N
-116  0  0   37 59 34   9 58 15       19 210  2.86   8.3 356.42  63.14N
-115  0  0   38 12 47  10  0 13       18 212  2.99   7.9 356.06  63.49N
Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level.
      2287 = pi Sco, 2.82 to 2.85Hp, Type EB
      2287 is triple:           9.7" 176.3 :  2.9 11.9 49" 127.7
    C A S S I N I   R E G I O N   G R A Z E
                Librations  Long -0.14   Lat +7.23
                            P +358.00     D -6.96
      Illumination of moon  100%-
        Elongation of Moon  173
    Vertical Profile Scale   4.43 km/arcsec at mean distance of moon
   Horizontal Scale Factor  1.25 deg/min
At longitude -120.00:
Limiting Magnitudes for various telescope apertures (in cm)
      CA\Tdia   5    10    15    20    25    30    35
    57.5      4.0   5.4   6.1   6.5   6.8   6.9   7.0
    59.5      4.0   5.4   6.1   6.5   6.8   6.9   7.0
    61.5      4.0   5.4   6.1   6.5   6.8   6.9   7.0
    63.5      4.0   5.4   6.1   6.5   6.8   6.9   7.0
    65.5      4.0   5.4   6.1   6.5   6.8   6.9   7.0
Results of Observer Scan                                    UT
Site                              Long.   Lat.   Dist.    h  m  s
BREIT IDEAS Obs - 12inch LX200   -121.7   37.1    30km    9 45  4
BREIT IDEAS Obs - MEADE 90mm     -121.7   37.1    30km    9 45  4
 
 

Crows Landing, CA

GPS Position

Latitude 37d 23.3827m

Longitude 121d 06.2034m

1 10 1.0 46.2 Meters - 27.5

First Disappearance

9h 45m 21.038s +/- 0.03s  = Hollow Red Dot ~ frame 30 in above graphic - derived by frame stepping

 

First Reappearance

9h 45m 21.638s +/- 0.03s = Hollow Red Dot ~ frame 45 in above graphic - derived by frame stepping

 

Second Disappearance

9h 45m 26.644s +/- 0.01s  via LiMovie diffraction routine

 

Second Reappearance

9h 47m 30.671s +/- 0.01s  via LiMovie diffraction routine

 

PLACE NAME     Pi Scorpii Graze - Crow's Landing CA
ADDRESS        BREIT IDEAS Obs - Morgan Hill CA
E-MAIL ADDRESS breit_ideas@poyntsource.com
REPRESENTATIVE Derek C Breit
REPORTED TO    Mitsuru Soma : Walt Morgan : Interested Parties
TA  CAD  30.5 3050.0  121  6 12.2  W  37 23 23.0  N   46.0WGS84                 
OA  Derek C Breit                        
012008 520 94521038R   2287           1V RE0  031   11     6                 AAA
022008 520 94521638R   2287           2V RE0  031   11     6                 AAA
032008 520 94526644R   2287           1V RE0  011   11     6                 AAA
042008 520 94730671R   2287           2V RE0  011   11     6                 AAA
See the Video..  Click HERE 35MB

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