Predictions for Grazing Occultation of ZC 2761, 2009 Feb 20
Grazing Occultation of 2761cB8 Magnitude 6.6 [Red = 6.6]
Date: 2009 Feb 20 15h 5m, to 2009 Feb 20 15h 7m
Nominal site altitude 100m
E. Longit. Latitude U.T. Sun Moon TanZ PA AA CA
o ' " o ' " h m s Alt Alt Az o o o
170 0 0 -40 44 47 15 4 52 10 114 5.49 178.3 182.68 5.69S
170 10 0 -40 49 34 15 4 56 10 114 5.40 178.2 182.67 5.68S
170 20 0 -40 54 20 15 5 0 11 114 5.32 178.2 182.66 5.67S
170 30 0 -40 59 6 15 5 3 11 114 5.24 178.2 182.65 5.66S
170 40 0 -41 3 52 15 5 7 11 113 5.16 178.2 182.64 5.65S
170 50 1 -41 8 37 15 5 11 11 113 5.09 178.2 182.63 5.64S
171 0 1 -41 13 22 15 5 15 11 113 5.01 178.2 182.62 5.63S
171 10 1 -41 18 6 15 5 18 11 113 4.94 178.2 182.61 5.62S
171 20 1 -41 22 50 15 5 22 12 113 4.87 178.2 182.60 5.62S
171 30 1 -41 27 34 15 5 26 12 113 4.81 178.2 182.60 5.61S
171 40 1 -41 32 18 15 5 30 12 113 4.74 178.2 182.59 5.60S
171 50 1 -41 37 1 15 5 34 12 113 4.68 178.2 182.58 5.59S
172 0 1 -41 41 43 15 5 39 12 112 4.62 178.1 182.57 5.58S
172 10 2 -41 46 26 15 5 43 12 112 4.56 178.1 182.56 5.57S
172 20 2 -41 51 7 15 5 47 13 112 4.50 178.1 182.55 5.56S
172 30 2 -41 55 49 15 5 51 13 112 4.44 178.1 182.54 5.55S
172 40 2 -42 0 30 15 5 56 13 112 4.38 178.1 182.53 5.54S
172 50 2 -42 5 11 15 6 0 13 112 4.33 178.1 182.52 5.53S
173 0 2 -42 9 51 15 6 4 13 112 4.28 178.1 182.51 5.52S
173 10 2 -42 14 31 15 6 9 13 112 4.22 178.1 182.50 5.51S
173 20 2 -42 19 10 15 6 13 13 111 4.17 178.1 182.49 5.50S
173 30 3 -42 23 49 15 6 18 14 111 4.12 178.1 182.48 5.49S
173 40 3 -42 28 28 15 6 23 14 111 4.07 178.0 182.47 5.48S
173 50 3 -42 33 6 15 6 27 14 111 4.03 178.0 182.45 5.47S
174 0 3 -42 37 43 15 6 32 14 111 3.98 178.0 182.44 5.45S
Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level.
2761 is double: AB 7.4 7.4 0.10" 26.0
Librations Long +0.59 Lat +2.50
P +182.60 D +2.74
Illumination of moon 17%-
Elongation of Moon 49
Vertical Profile Scale 2.13 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.95 deg/min
At longitude 172.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
1.6 4.8 6.2 6.9 7.3 7.6 7.8 7.9
3.6 4.8 6.2 6.9 7.4 7.7 7.9 8.0
5.6 4.9 6.3 7.0 7.4 7.7 7.9 8.1
7.6 5.0 6.4 7.1 7.6 7.9 8.1 8.2
9.6 5.9 7.3 8.1 8.6 9.0 9.2 9.4
Lunar Limb Profile
