Predictions for Grazing Occultation of ZC 2287, 2007 Aug 21
Grazing Occultation of 2287 SB1 Magnitude 2.9e
2287 = pi Scorpii
Date 2007 August 21 (Tuesday) Nominal site altitude 0m
E. Longit. Latitude U.T. Sun Moon TanZ PA WA CA
o ' " o ' " h m s Alt Alt Az o o o
150 0 0 -25 39 4 12 15 2 34 254 1.51 182.7 171.48 8.37S
150 10 0 -25 35 22 12 15 14 33 254 1.52 182.7 171.44 8.41S
150 20 0 -25 31 39 12 15 26 33 254 1.53 182.7 171.41 8.44S
150 30 0 -25 27 55 12 15 37 33 254 1.54 182.6 171.38 8.48S
150 40 0 -25 24 10 12 15 49 33 254 1.56 182.6 171.34 8.51S
150 50 0 -25 20 24 12 16 1 33 254 1.57 182.6 171.31 8.54S
151 0 0 -25 16 37 12 16 12 32 254 1.58 182.5 171.28 8.58S
151 10 0 -25 12 49 12 16 24 32 254 1.59 182.5 171.24 8.61S
151 20 0 -25 9 0 12 16 35 32 254 1.61 182.5 171.21 8.64S
151 30 0 -25 5 10 12 16 46 32 254 1.62 182.5 171.18 8.67S
151 40 0 -25 1 20 12 16 58 31 253 1.63 182.4 171.15 8.70S
151 50 0 -24 57 28 12 17 9 31 253 1.64 182.4 171.12 8.74S
152 0 0 -24 53 35 12 17 20 31 253 1.66 182.4 171.08 8.77S
152 10 0 -24 49 42 12 17 31 31 253 1.67 182.3 171.05 8.80S
152 20 0 -24 45 48 12 17 42 31 253 1.69 182.3 171.02 8.83S
152 30 0 -24 41 53 12 17 53 30 253 1.70 182.3 170.99 8.86S
152 40 0 -24 37 57 12 18 4 30 253 1.71 182.2 170.96 8.89S
152 50 0 -24 34 0 12 18 15 30 253 1.73 182.2 170.93 8.92S
153 0 0 -24 30 2 12 18 26 30 253 1.74 182.2 170.90 8.95S
153 10 0 -24 26 3 12 18 36 30 253 1.76 182.1 170.87 8.98S
153 20 0 -24 22 4 12 18 47 29 253 1.77 182.1 170.84 9.01S
Path coordinates are referred to WGS84 (as used by GPS).
2287 is triple : 1.98" 244.4 : 2.8 11.9 49" 129.0
Graze Path of component #2 1.65km North, and 4.3 secs. earlier cf. primary.
Graze Path of component #3 52.58km North, and 96.3 secs. later cf. primary.
2287 = pi Sco, 2.82 to 2.85 Hp, Type EB
Librations Long -4.47 Lat +6.76
P +170.3 D +6.2
Illumination of moon 54%+
Elongation of Moon 95
Vertical Profile Scale 1.87 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.57 deg/min
Limiting Magnitudes for various telescope apertures (in mm)
CA\Tdia 50 100 150 200 250 300 350
5.0 5.5 7.0 7.7 8.2 8.6 8.8 8.9
7.0 5.6 7.0 7.8 8.2 8.6 8.8 9.0
9.0 5.6 7.0 7.8 8.3 8.6 8.8 9.0
11.0 5.6 7.0 7.8 8.3 8.6 8.8 9.0
13.0 5.6 7.0 7.8 8.3 8.6 8.9 9.0
Lunar Limb Profile for graze
