Predictions for Grazing Occultation of ZC 1493, 2007 Apr 26
Grazing Occultation of 1493 cF7 Magnitude 6.5
Date 2007 April 26 (Thursday) 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
171 0 0 -41 44 4 10 51 22 26 322 2.02 38.3 19.24 16.74N
171 10 0 -41 50 31 10 51 35 26 321 2.03 38.2 19.20 16.70N
171 20 0 -41 56 57 10 51 48 26 321 2.05 38.2 19.15 16.65N
171 30 0 -42 3 21 10 52 1 26 321 2.07 38.2 19.11 16.61N
171 40 0 -42 9 43 10 52 14 26 321 2.09 38.1 19.06 16.56N
171 50 0 -42 16 3 10 52 26 25 321 2.10 38.1 19.01 16.51N
172 0 0 -42 22 21 10 52 39 25 320 2.12 38.0 18.97 16.47N
172 10 0 -42 28 37 10 52 51 25 320 2.14 38.0 18.92 16.42N
172 20 0 -42 34 51 10 53 4 25 320 2.16 37.9 18.87 16.37N
172 30 0 -42 41 3 10 53 16 25 320 2.17 37.9 18.83 16.33N
172 40 0 -42 47 13 10 53 28 25 320 2.19 37.8 18.78 16.28N
172 50 0 -42 53 22 10 53 40 24 320 2.21 37.8 18.73 16.23N
173 0 0 -42 59 28 10 53 52 24 319 2.23 37.7 18.68 16.19N
173 10 0 -43 5 33 10 54 3 24 319 2.25 37.7 18.64 16.14N
173 20 0 -43 11 36 10 54 15 24 319 2.27 37.6 18.59 16.09N
173 30 0 -43 17 37 10 54 26 24 319 2.29 37.6 18.55 16.05N
Path coordinates are referred to WGS84 (as used by GPS).
1493 is double : 6.4 7.3 0.032" 269.4
Graze Path of component #2 0.04km North, and 0.1 secs. earlier cf. primary.
Librations Long +5.11 Lat -2.16
P +18.4 D +3.9
Illumination of moon 71%+
Elongation of Moon 114
Vertical Profile Scale 2.17 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.54 deg/min
Limiting Magnitudes for various telescope apertures (in mm)
CA\Tdia 50 100 150 200 250 300 350
12.0 5.3 6.7 7.4 7.9 8.2 8.4 8.5
14.0 5.3 6.7 7.5 7.9 8.2 8.4 8.5
16.0 5.3 6.7 7.5 7.9 8.2 8.4 8.6
18.0 5.3 6.7 7.5 7.9 8.2 8.4 8.6
20.0 5.3 6.8 7.5 7.9 8.2 8.4 8.6
Lunar Limb Profile
