Predictions for Grazing Occultation of ZC 240, 2013 Dec 12, near Perth
Graze profile
Grazing Occultation of 240 F0 Magnitude 5.5 [Red = 5.4]
R240 = pi Piscium
Date: 2013 Dec 12 15h 44m, to 2013 Dec 12 15h 54m
Nominal site altitude 50m
E. Longit. Latitude U.T. Sun Moon TanZ PA AA CA
o ' " o ' " h m s Alt Alt Az o o o
112 0 0 -33 2 25 15 44 9 28 309 1.91 342.3 5.05 2.30N
112 30 0 -32 59 26 15 44 54 27 308 1.94 342.4 5.18 2.43N
113 0 0 -32 56 42 15 45 38 27 307 1.98 342.6 5.31 2.56N
113 30 0 -32 54 14 15 46 21 26 307 2.01 342.7 5.44 2.69N
114 0 0 -32 52 1 15 47 3 26 306 2.05 342.8 5.56 2.82N
114 30 0 -32 50 3 15 47 44 26 306 2.09 342.9 5.69 2.94N
115 0 0 -32 48 20 15 48 25 25 305 2.14 343.1 5.81 3.07N
115 30 0 -32 46 51 15 49 4 25 305 2.18 343.2 5.94 3.19N
116 0 0 -32 45 36 15 49 42 24 304 2.22 343.3 6.06 3.31N
116 30 0 -32 44 35 15 50 20 24 304 2.27 343.4 6.18 3.43N
117 0 0 -32 43 48 15 50 56 23 303 2.32 343.5 6.30 3.55N
117 30 0 -32 43 14 15 51 32 23 303 2.37 343.7 6.41 3.66N
118 0 0 -32 42 54 15 52 7 22 302 2.43 343.8 6.53 3.78N
118 30 0 -32 42 46 15 52 41 22 302 2.48 343.9 6.64 3.89N
119 0 0 -32 42 51 15 53 13 21 301 2.54 344.0 6.75 4.01N
119 30 0 -32 43 9 15 53 45 21 301 2.60 344.1 6.86 4.12N
120 0 0 -32 43 39 15 54 17 21 300 2.67 344.2 6.97 4.22N
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 1 meters [Estimated]
Librations Long +6.16 Lat -1.86
P +5.80 D +2.76
Illumination of moon 80%+
Elongation of Moon 126
Vertical Profile Scale 3.07 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.48 deg/min
At longitude 116.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
-0.7 2.6 3.9 4.6 5.0 5.2 5.4 5.5
1.3 2.6 3.9 4.6 5.0 5.2 5.4 5.5
3.3 4.2 5.6 6.3 6.8 7.0 7.2 7.3
5.3 4.4 5.8 6.5 6.9 7.2 7.4 7.5
7.3 4.6 6.0 6.8 7.2 7.5 7.7 7.8
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Albany 117.8 -35.0 253km 15 51 55
Perth 115.9 -32.0 91km 15 49 31
Lunar Limb Profile
