Predictions for Grazing Occultation of SAO 138283, 2009 Aug 22
Grazing Occultation of 138283 M* Magnitude 7.9 [Red = 7.1]
Date: 2009 Aug 22 8h 50m, to 2009 Aug 22 8h 56m
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
147 0 0 -27 46 15 8 54 52 12 274 4.72 207.8 185.24 4.33S
147 30 0 -27 47 55 8 54 59 11 273 4.92 207.7 185.14 4.44S
148 0 0 -27 49 28 8 55 6 11 273 5.13 207.6 185.04 4.54S
148 30 0 -27 50 54 8 55 12 11 273 5.36 207.5 184.94 4.64S
149 0 0 -27 52 13 8 55 18 10 273 5.62 207.4 184.84 4.74S
149 30 0 -27 53 24 8 55 23 10 272 5.89 207.3 184.73 4.85S
150 0 0 -27 54 28 8 55 28 9 272 6.19 207.2 184.64 4.94S
150 30 0 -27 55 25 8 55 33 9 272 6.53 207.1 184.55 5.03S
151 0 0 -27 56 15 8 55 37 8 272 6.89 207.0 184.45 5.13S
151 30 0 -27 56 58 8 55 41 8 272 7.30 206.9 184.35 5.23S
152 0 0 -27 57 34 8 55 45 7 271 7.76 206.8 184.26 5.32S
152 30 0 -27 58 3 8 55 48 7 271 8.28 206.7 184.16 5.42S
153 0 0 -27 58 26 8 55 51 6 271 8.87 206.6 184.07 5.51S
153 30 0 -27 58 41 8 55 53 6 271 9.54 206.5 183.98 5.60S
154 0 0 -27 58 51 8 55 55 6 270 10.32 206.4 183.89 5.69S
154 30 0 -27 58 53 8 55 57 5 270 11.23 206.3 183.80 5.78S
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 2 meters
Librations Long +4.49 Lat +5.55
P +186.24 D +5.33
Illumination of moon 5%+
Elongation of Moon 26
Vertical Profile Scale 1.86 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.91 deg/min
At longitude 144.50:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
-0.2 7.3 8.7 9.5 10.1 10.4 10.7 10.9
1.8 7.3 8.7 9.6 10.1 10.5 10.7 11.0
3.8 7.3 8.8 9.6 10.1 10.5 10.8 11.0
5.8 7.3 8.8 9.6 10.1 10.5 10.8 11.0
7.8 7.4 8.8 9.6 10.2 10.5 10.8 11.0
Lunar Limb Profile - Brisbane
