Predictions for Grazing Occultation of ZC3015, 2016 Sep 13
Graze profile
Grazing Occultation of 3015SB7 Magnitude 5.2 [Red = 0.0]
R3015 = tau Capricorni
Date: 2016 Sep 13 13h 35m, to 2016 Sep 13 13h 51m
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 -44 4 29.0 13 34 40 36 285 1.36 162.5 178.63 6.58S
167 30 0 -43 50 48.5 13 35 26 36 285 1.39 162.5 178.62 6.59S
168 0 0 -43 37 6.9 13 36 11 35 284 1.41 162.5 178.61 6.60S
168 30 0 -43 23 24.4 13 36 57 35 283 1.43 162.5 178.61 6.60S
169 0 0 -43 9 41.4 13 37 42 35 282 1.45 162.5 178.61 6.60S
169 30 0 -42 55 58.1 13 38 26 34 282 1.48 162.5 178.61 6.60S
170 0 0 -42 42 14.7 13 39 10 34 281 1.50 162.5 178.61 6.60S
170 30 0 -42 28 31.5 13 39 54 33 280 1.53 162.5 178.61 6.60S
171 0 0 -42 14 48.7 13 40 37 33 280 1.56 162.5 178.62 6.59S
171 30 0 -42 1 6.6 13 41 20 32 279 1.59 162.5 178.63 6.58S
172 0 0 -41 47 25.4 13 42 2 32 278 1.61 162.5 178.63 6.58S
172 30 0 -41 33 45.4 13 42 44 31 278 1.64 162.5 178.64 6.57S
173 0 0 -41 20 6.8 13 43 25 31 277 1.67 162.5 178.65 6.56S
173 30 0 -41 6 29.8 13 44 6 30 277 1.71 162.5 178.66 6.54S
174 0 0 -40 52 54.7 13 44 46 30 276 1.74 162.5 178.68 6.53S
174 30 0 -40 39 21.6 13 45 25 29 275 1.77 162.6 178.69 6.52S
175 0 0 -40 25 50.7 13 46 4 29 275 1.81 162.6 178.71 6.50S
175 30 0 -40 12 22.3 13 46 43 28 274 1.85 162.6 178.73 6.48S
176 0 0 -39 58 56.6 13 47 21 28 274 1.88 162.6 178.74 6.47S
176 30 0 -39 45 33.7 13 47 58 27 273 1.92 162.6 178.76 6.45S
177 0 0 -39 32 14.0 13 48 35 27 273 1.96 162.6 178.78 6.43S
177 30 0 -39 18 57.5 13 49 11 26 272 2.01 162.7 178.81 6.40S
178 0 0 -39 5 44.5 13 49 46 26 272 2.05 162.7 178.83 6.38S
178 30 0 -38 52 35.2 13 50 21 25 271 2.10 162.7 178.85 6.36S
179 0 0 -38 39 29.8 13 50 55 25 270 2.15 162.7 178.88 6.33S
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.
3015 is triple:
Graze prediction is based on the mean position of AB 5.38 7.31 0.32" 122.6
(HU 200) Graze path of A approximately 0.1 km south, and 0.1 secs earlier compared to prediction
Graze path of B approximately 0.5 km north, and 0.4 secs later compared to prediction
- refer to graze profile for exact distances
AB 5.38 7.31 0.32" 122.6 (HU 200) Graze path of B approximately 0.6 km north, and 0.4 secs later compared to A
- refer to graze profile for exact distances
AC 5.4 12.2 159" 272.0 (HU 200) Graze path of C approximately 132.7 km south, and 310.8 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 -6.67 Lat -4.46
P +179.15 D -4.35
Illumination of moon 87%+
Elongation of Moon 137
Vertical Profile Scale approx. 2.47 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.76 deg/min
At longitude 173.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
2.6 2.5 3.9 4.6 5.0 5.3 5.5 5.6
4.6 3.9 5.4 6.1 6.5 6.8 7.0 7.2
6.6 4.4 5.8 6.6 7.0 7.3 7.5 7.7
8.6 4.4 5.9 6.6 7.0 7.3 7.5 7.7
10.6 5.0 6.5 7.2 7.7 8.0 8.2 8.3
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Chch graze 172.6 -43.5 191km 13 42 55.0
Dunedin 170.5 -45.9 315km 13 39 53.5
MidNZ 173.0 -41.0 32km 13 43 24.9
Wellington 174.8 -41.3 74km 13 45 48.8
Lunar Limb Profile
