Predictions for Grazing Occultation of ZC1941, 2016 Jan 30
Graze profile
Grazing Occultation of 1941 M3 Magnitude 4.7 [Red = 3.8] s
R1941 = 74 Virginis
Date: 2016 Jan 30 14h 50m, to 2016 Jan 30 15h 16m
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
167 0 0 -42 47 12.1 14 49 41 37 60 1.35 204.5 181.67 4.00S
167 30 0 -43 2 56.6 14 50 46 37 59 1.33 204.5 181.70 4.03S
168 0 0 -43 18 46.6 14 51 51 37 58 1.31 204.5 181.73 4.06S
168 30 0 -43 34 41.4 14 52 57 38 58 1.30 204.6 181.76 4.09S
169 0 0 -43 50 40.8 14 54 3 38 57 1.28 204.6 181.79 4.12S
169 30 0 -44 6 44.1 14 55 9 38 56 1.27 204.6 181.82 4.15S
170 0 0 -44 22 51.0 14 56 16 39 55 1.25 204.6 181.84 4.17S
170 30 0 -44 39 1.0 14 57 23 39 54 1.24 204.7 181.86 4.19S
171 0 0 -44 55 13.6 14 58 30 39 53 1.23 204.7 181.88 4.21S
171 30 0 -45 11 28.4 14 59 37 39 52 1.22 204.7 181.89 4.22S
172 0 0 -45 27 44.8 15 0 44 40 51 1.20 204.7 181.90 4.23S
172 30 0 -45 44 2.3 15 1 51 40 50 1.19 204.7 181.91 4.24S
173 0 0 -46 0 20.4 15 2 58 40 49 1.18 204.7 181.92 4.25S
173 30 0 -46 16 38.7 15 4 6 40 48 1.18 204.7 181.92 4.25S
174 0 0 -46 32 56.6 15 5 13 41 47 1.17 204.7 181.92 4.25S
174 30 0 -46 49 13.7 15 6 20 41 45 1.16 204.7 181.92 4.25S
175 0 0 -47 5 29.5 15 7 27 41 44 1.15 204.7 181.92 4.25S
175 30 0 -47 21 43.6 15 8 33 41 43 1.14 204.7 181.91 4.24S
176 0 0 -47 37 55.5 15 9 40 41 42 1.14 204.7 181.90 4.23S
176 30 0 -47 54 4.6 15 10 46 41 41 1.13 204.7 181.89 4.22S
177 0 0 -48 10 10.7 15 11 52 42 40 1.13 204.7 181.88 4.21S
177 30 0 -48 26 13.3 15 12 57 42 39 1.12 204.7 181.86 4.19S
178 0 0 -48 42 12.0 15 14 3 42 38 1.12 204.7 181.84 4.17S
178 30 0 -48 58 6.4 15 15 7 42 37 1.11 204.6 181.82 4.15S
179 0 0 -49 13 56.1 15 16 12 42 36 1.11 204.6 181.80 4.13S
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 14 meters [CHARM/CADARS, 1 measures]
1941 is variable:
1941 = NSV 6297, 4.68, range 0.07, V
C A S S I N I R E G I O N G R A Z E
Librations Long -1.23 Lat -4.13
P +182.01 D -3.83
Illumination of moon 64%-
Elongation of Moon 106
Vertical Profile Scale approx. 2.77 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.44 deg/min
At longitude 173.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
0.2 2.9 4.3 5.1 5.5 5.8 6.0 6.2
2.2 4.8 6.2 7.0 7.5 7.8 8.0 8.2
4.2 4.8 6.2 7.0 7.5 7.8 8.1 8.2
6.2 5.6 7.1 7.9 8.4 8.7 8.9 9.1
8.2 5.6 7.1 7.9 8.4 8.7 9.0 9.2
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Chch graze 172.6 -43.5 202km 15 2 9.7
Dunedin 170.5 -45.9 107km 14 57 22.4
MidNZ 173.0 -41.0 451km 15 2 58.5
Lunar Limb Profile
