Predictions for Grazing Occultation of ZC 810, 2005 Dec 15
Grazing Occultation of 810 SB7 Magnitude 1.6
810 = El Nath = beta Tauri
Date 2005 December 15 (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
149 0 0 -41 38 32 14 3 17 20 358 2.77 173.2 176.30 82.79S
148 50 0 -41 40 46 14 2 52 20 358 2.77 173.2 176.23 82.85S
148 40 0 -41 43 5 14 2 28 20 358 2.78 173.1 176.17 82.92S
148 30 0 -41 45 29 14 2 4 20 358 2.78 173.0 176.10 82.99S
148 20 0 -41 47 57 14 1 39 20 359 2.79 173.0 176.03 83.05S
148 10 0 -41 50 30 14 1 15 20 359 2.79 172.9 175.97 83.12S
148 0 0 -41 53 8 14 0 51 20 359 2.80 172.8 175.91 83.18S
147 50 0 -41 55 50 14 0 27 20 359 2.81 172.8 175.84 83.24S
147 40 0 -41 58 37 14 0 3 20 360 2.81 172.7 175.78 83.31S
147 30 0 -42 1 28 13 59 39 20 360 2.82 172.6 175.71 83.37S
147 20 0 -42 4 24 13 59 15 19 0 2.83 172.6 175.65 83.44S
147 10 0 -42 7 25 13 58 51 19 0 2.84 172.5 175.59 83.50S
147 0 0 -42 10 30 13 58 28 19 1 2.84 172.4 175.53 83.56S
146 50 0 -42 13 40 13 58 4 19 1 2.85 172.4 175.47 83.62S
146 40 0 -42 16 54 13 57 40 19 1 2.86 172.3 175.40 83.68S
146 30 0 -42 20 13 13 57 17 19 1 2.87 172.3 175.34 83.75S
146 20 0 -42 23 36 13 56 53 19 2 2.88 172.2 175.28 83.81S
146 10 0 -42 27 4 13 56 30 19 2 2.89 172.1 175.22 83.87S
146 0 0 -42 30 36 13 56 7 19 2 2.90 172.1 175.16 83.93S
145 50 0 -42 34 13 13 55 44 19 2 2.91 172.0 175.10 83.98S
145 40 0 -42 37 54 13 55 21 19 3 2.93 172.0 175.05 84.04S
145 30 0 -42 41 40 13 54 58 19 3 2.94 171.9 174.99 84.10S
145 20 0 -42 45 30 13 54 35 19 3 2.95 171.9 174.93 84.16S
145 10 0 -42 49 25 13 54 12 19 3 2.96 171.8 174.87 84.22S
145 0 0 -42 53 23 13 53 50 19 4 2.98 171.7 174.82 84.27S
145 10 0 -42 49 24 13 54 12 19 3 2.96 171.8 174.87 84.22S
145 20 0 -42 45 30 13 54 35 19 3 2.95 171.9 174.93 84.16S
145 30 0 -42 41 40 13 54 58 19 3 2.94 171.9 174.99 84.10S
145 40 0 -42 37 54 13 55 21 19 3 2.93 172.0 175.05 84.04S
145 50 0 -42 34 13 13 55 44 19 2 2.91 172.0 175.10 83.98S
146 0 0 -42 30 36 13 56 7 19 2 2.90 172.1 175.16 83.93S
146 10 0 -42 27 4 13 56 30 19 2 2.89 172.1 175.22 83.87S
146 20 0 -42 23 36 13 56 53 19 2 2.88 172.2 175.28 83.81S
146 30 0 -42 20 13 13 57 17 19 1 2.87 172.3 175.34 83.75S
146 40 0 -42 16 54 13 57 40 19 1 2.86 172.3 175.40 83.68S
146 50 0 -42 13 40 13 58 4 19 1 2.85 172.4 175.47 83.62S
147 0 0 -42 10 30 13 58 28 19 1 2.84 172.4 175.53 83.56S
147 10 0 -42 7 25 13 58 51 19 0 2.84 172.5 175.59 83.50S
147 20 0 -42 4 24 13 59 15 19 0 2.83 172.6 175.65 83.44S
147 30 0 -42 1 28 13 59 39 20 360 2.82 172.6 175.71 83.37S
147 40 0 -41 58 37 14 0 3 20 360 2.81 172.7 175.78 83.31S
147 50 0 -41 55 50 14 0 27 20 359 2.81 172.8 175.84 83.24S
148 0 0 -41 53 8 14 0 51 20 359 2.80 172.8 175.91 83.18S
148 10 0 -41 50 30 14 1 15 20 359 2.79 172.9 175.97 83.12S
148 20 0 -41 47 57 14 1 39 20 359 2.79 173.0 176.03 83.05S
148 30 0 -41 45 29 14 2 4 20 358 2.78 173.0 176.10 82.99S
148 40 0 -41 43 5 14 2 28 20 358 2.78 173.1 176.17 82.92S
148 50 0 -41 40 46 14 2 52 20 358 2.77 173.2 176.23 82.85S
Path coordinates are referred to WGS84 (as used by GPS).
810 is triple : 2.6 2.6 0.100" 270.0 : 1.6 33" 239.0
Graze Path of component #2 0.06km South, and 0.3 secs. earlier cf. primary.
Graze Path of component #3 71.12km North, and 86.8 secs. earlier cf. primary.
C A S S I N I R E G I O N G R A Z E
Librations Long +4.48 Lat -7.10
P +175.7 D -6.5
Illumination of moon 100%+
Elongation of Moon 174
Vertical Profile Scale 5.37 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.31 deg/min
Limiting Magnitudes for various telescope apertures (in mm)
CA\Tdia 50 100 150 200 250 300 350
78.9 4.1 5.5 6.1 6.5 6.8 6.9 7.1
80.9 4.1 5.5 6.2 6.5 6.8 7.0 7.1
82.9 4.1 5.5 6.2 6.6 6.8 7.0 7.1
84.9 4.1 5.5 6.2 6.6 6.8 7.0 7.1
86.9 4.1 5.5 6.2 6.6 6.8 7.0 7.1
Lunar Limb Profile for graze near Hobart
