Predictions for Grazing Occultation of ZC 1637, 2009 Apr 7
Grazing Occultation of 1637 K0 Magnitude 5.9 [Red = 5.4]
R1637 = 76 Leonis
Date: 2009 Apr 07 8h 35m, to 2009 Apr 07 9h 5m
Nominal site altitude 5m
E. Longit. Latitude U.T. Sun Moon TanZ PA AA CA
o ' " o ' " h m s Alt Alt Az o o o
145 0 0 -19 47 6 8 46 46 -8 30 76 1.74 33.5 11.50 15.73N
145 30 0 -19 59 56 8 47 31 -9 30 76 1.70 33.6 11.66 15.89N
146 0 0 -20 13 8 8 48 17 -9 31 75 1.66 33.8 11.82 16.05N
146 30 0 -20 26 44 8 49 4 -10 32 75 1.63 33.9 11.98 16.22N
147 0 0 -20 40 44 8 49 53 -11 32 74 1.59 34.1 12.14 16.38N
147 30 0 -20 55 8 8 50 43 -11 33 74 1.56 34.3 12.30 16.54N
148 0 0 -21 9 56 8 51 34 33 73 1.52 34.4 12.47 16.70N
148 30 0 -21 25 9 8 52 27 34 73 1.49 34.6 12.63 16.86N
149 0 0 -21 40 47 8 53 21 34 72 1.46 34.8 12.79 17.02N
149 30 0 -21 56 50 8 54 17 35 72 1.43 34.9 12.95 17.18N
150 0 0 -22 13 20 8 55 14 36 71 1.40 35.1 13.10 17.33N
150 30 0 -22 30 15 8 56 12 36 70 1.37 35.2 13.26 17.49N
151 0 0 -22 47 36 8 57 12 37 70 1.34 35.4 13.42 17.65N
151 30 0 -23 5 24 8 58 14 37 69 1.32 35.5 13.58 17.81N
152 0 0 -23 23 39 8 59 16 38 68 1.29 35.7 13.73 17.96N
152 30 0 -23 42 21 9 0 20 38 67 1.27 35.9 13.89 18.12N
153 0 0 -24 1 30 9 1 26 39 67 1.24 36.0 14.04 18.27N
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 3 meters
Librations Long +4.47 Lat +3.88
P +11.60 D -2.66
Illumination of moon 94%+
Elongation of Moon 152
Vertical Profile Scale 2.51 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.66 deg/min
At longitude 144.50:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
11.6 4.3 5.7 6.4 6.9 7.2 7.3 7.5
13.6 4.3 5.7 6.4 6.9 7.2 7.4 7.5
15.6 4.6 6.0 6.7 7.2 7.5 7.7 7.8
17.6 5.0 6.4 7.2 7.6 7.9 8.1 8.2
19.6 5.2 6.6 7.4 7.8 8.1 8.3 8.5
Lunar Limb Profile - Rockhampton
