Predictions for Grazing Occultation of ZC2372, 2016 May 22
Graze profile
Grazing Occultation of 2372SG8 Magnitude 4.3 [Red = 3.8]
R2372 = phi Ophiuchi
Date: 2016 May 22 11h 19m, to 2016 May 22 11h 53m
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
135 0 0 -35 37 52.9 11 18 30 31 89 1.64 195.9 187.08 44.46S
135 30 0 -35 51 13.2 11 19 13 32 88 1.60 195.9 187.08 44.47S
136 0 0 -36 4 34.3 11 19 56 33 88 1.57 195.9 187.09 44.48S
136 30 0 -36 17 56.0 11 20 39 33 87 1.54 195.9 187.10 44.49S
137 0 0 -36 31 17.9 11 21 23 34 86 1.51 195.9 187.10 44.49S
137 30 0 -36 44 40.0 11 22 8 34 86 1.48 195.9 187.10 44.50S
138 0 0 -36 58 1.9 11 22 54 35 85 1.45 195.9 187.11 44.50S
138 30 0 -37 11 23.5 11 23 40 35 85 1.42 195.9 187.11 44.50S
139 0 0 -37 24 44.5 11 24 26 36 84 1.39 195.9 187.10 44.50S
139 30 0 -37 38 4.7 11 25 14 36 83 1.36 195.9 187.10 44.50S
140 0 0 -37 51 23.8 11 26 1 37 83 1.34 195.9 187.09 44.49S
140 30 0 -38 4 41.6 11 26 50 37 82 1.31 195.9 187.09 44.49S
141 0 0 -38 17 58.0 11 27 39 38 81 1.29 195.9 187.08 44.48S
141 30 0 -38 31 12.5 11 28 28 38 81 1.27 195.9 187.07 44.47S
142 0 0 -38 44 25.1 11 29 18 39 80 1.24 195.9 187.05 44.46S
142 30 0 -38 57 35.5 11 30 8 39 79 1.22 195.9 187.04 44.45S
143 0 0 -39 10 43.4 11 30 59 40 79 1.20 195.9 187.02 44.44S
143 30 0 -39 23 48.6 11 31 50 40 78 1.18 195.8 187.01 44.42S
144 0 0 -39 36 50.8 11 32 41 41 77 1.16 195.8 186.99 44.41S
144 30 0 -39 49 50.0 11 33 33 41 76 1.14 195.8 186.96 44.39S
145 0 0 -40 2 45.7 11 34 26 42 76 1.12 195.8 186.94 44.37S
145 30 0 -40 15 37.8 11 35 18 42 75 1.10 195.7 186.92 44.34S
146 0 0 -40 28 26.1 11 36 12 43 74 1.08 195.7 186.89 44.32S
146 30 0 -40 41 10.3 11 37 5 43 73 1.06 195.7 186.86 44.29S
147 0 0 -40 53 50.2 11 37 59 44 73 1.05 195.7 186.83 44.26S
147 30 0 -41 6 25.6 11 38 53 44 72 1.03 195.6 186.80 44.23S
148 0 0 -41 18 56.4 11 39 47 45 71 1.01 195.6 186.76 44.20S
148 30 0 -41 31 22.2 11 40 42 45 70 1.00 195.6 186.73 44.17S
149 0 0 -41 43 42.9 11 41 36 45 69 0.98 195.5 186.69 44.13S
149 30 0 -41 55 58.3 11 42 31 46 68 0.97 195.5 186.65 44.10S
150 0 0 -42 8 8.2 11 43 27 46 67 0.95 195.4 186.61 44.06S
150 30 0 -42 20 12.3 11 44 22 47 66 0.94 195.4 186.56 44.02S
151 0 0 -42 32 10.6 11 45 18 47 66 0.93 195.3 186.52 43.98S
151 30 0 -42 44 2.8 11 46 13 48 65 0.91 195.3 186.47 43.93S
152 0 0 -42 55 48.7 11 47 9 48 64 0.90 195.3 186.42 43.89S
152 30 0 -43 7 28.3 11 48 5 48 63 0.89 195.2 186.37 43.84S
153 0 0 -43 19 1.3 11 49 2 49 62 0.88 195.2 186.32 43.79S
153 30 0 -43 30 27.6 11 49 58 49 61 0.86 195.1 186.27 43.74S
154 0 0 -43 41 47.1 11 50 54 50 60 0.85 195.0 186.21 43.69S
154 30 0 -43 52 59.6 11 51 50 50 59 0.84 195.0 186.16 43.64S
155 0 0 -44 4 4.9 11 52 47 50 58 0.83 194.9 186.10 43.58S
Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level. The path
is adjusted for the effects of refraction at low moon altitudes.
Projected diameter of star 4 meters [Estimated]
2372 is triple:
AB 4.3 12.9 42" 37.0 (BU 626) Graze path of B approximately 82.7 km south, and 38.2 secs later compared to A
- refer to graze profile for exact distances
AC 4.4 10.8 120" 320.1 (BU 626) Graze path of C approximately 143.9 km south, and 250.2 secs earlier compared to A
- refer to graze profile for exact distances
C A S S I N I R E G I O N G R A Z E
Librations Long -3.09 Lat -6.96
P +187.33 D -6.27
Illumination of moon 99%-
Elongation of Moon 171
Vertical Profile Scale approx. 2.22 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.52 deg/min
At longitude 145.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
40.4 4.3 5.8 6.5 7.0 7.3 7.5 7.7
42.4 4.3 5.8 6.5 7.0 7.3 7.5 7.7
44.4 4.3 5.8 6.5 7.0 7.3 7.5 7.7
46.4 4.3 5.8 6.5 7.0 7.3 7.5 7.7
48.4 4.3 5.8 6.5 7.0 7.3 7.5 7.7
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Adelaide 138.6 -34.6 259km 11 23 49.2
AU Mid 143.0 -30.6 850km 11 30 58.8
Bendigo 144.3 -36.8 289km 11 33 16.1
Hobart 147.3 -42.9 179km 11 38 31.2
Melbourne 145.0 -37.8 216km 11 34 22.4
Perth 115.9 -32.0 430km 11 0 28.9
Lunar Limb Profile
