Predictions for Grazing Occultation of ZC 2247 2015 Jun 1
Graze profile
Grazing Occultation of 2247 A6 Magnitude 5.4 [Red = 5.3]
R2247 = eta Librae
Date: 2015 Jun 01 15h 16m, to 2015 Jun 01 15h 28m
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
167 0 0 -42 47 41 15 15 41 40 287 1.19 187.1 173.31 23.14S
167 30 0 -42 44 32 15 16 16 40 286 1.21 187.0 173.24 23.22S
168 0 0 -42 41 16 15 16 50 39 286 1.23 186.9 173.16 23.29S
168 30 0 -42 37 55 15 17 24 39 285 1.25 186.9 173.08 23.37S
169 0 0 -42 34 27 15 17 58 38 285 1.27 186.8 173.01 23.44S
169 30 0 -42 30 53 15 18 32 38 284 1.29 186.7 172.93 23.52S
170 0 0 -42 27 13 15 19 5 37 284 1.31 186.6 172.86 23.59S
170 30 0 -42 23 27 15 19 37 37 283 1.33 186.6 172.79 23.66S
171 0 0 -42 19 35 15 20 10 36 282 1.35 186.5 172.72 23.73S
171 30 0 -42 15 37 15 20 41 36 282 1.37 186.4 172.64 23.80S
172 0 0 -42 11 33 15 21 13 36 281 1.40 186.4 172.57 23.87S
172 30 0 -42 7 23 15 21 44 35 281 1.42 186.3 172.51 23.94S
173 0 0 -42 3 8 15 22 15 35 280 1.44 186.2 172.44 24.01S
173 30 0 -41 58 47 15 22 46 34 280 1.47 186.2 172.37 24.07S
174 0 0 -41 54 21 15 23 16 34 279 1.49 186.1 172.30 24.14S
174 30 0 -41 49 49 15 23 46 33 279 1.52 186.0 172.24 24.20S
175 0 0 -41 45 11 15 24 15 33 278 1.54 186.0 172.17 24.27S
175 30 0 -41 40 28 15 24 44 32 278 1.57 185.9 172.11 24.33S
176 0 0 -41 35 39 15 25 13 32 277 1.60 185.8 172.05 24.39S
176 30 0 -41 30 45 15 25 41 32 277 1.63 185.8 171.98 24.45S
177 0 0 -41 25 46 15 26 9 31 276 1.66 185.7 171.92 24.51S
177 30 0 -41 20 41 15 26 36 31 276 1.69 185.7 171.86 24.57S
178 0 0 -41 15 31 15 27 3 30 275 1.72 185.6 171.80 24.63S
178 30 0 -41 10 16 15 27 30 30 275 1.75 185.5 171.74 24.69S
179 0 0 -41 4 56 15 27 57 29 274 1.78 185.5 171.69 24.75S
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.
C A S S I N I R E G I O N G R A Z E
Librations Long -5.82 Lat -5.44
P +172.96 D -5.90
Illumination of moon 99%+
Elongation of Moon 166
Vertical Profile Scale 2.06 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.62 deg/min
At longitude 173.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
20.0 4.3 5.7 6.4 6.9 7.2 7.4 7.5
22.0 4.3 5.7 6.4 6.9 7.2 7.4 7.6
24.0 4.3 5.7 6.4 6.9 7.2 7.4 7.6
26.0 4.3 5.7 6.4 6.9 7.2 7.4 7.6
28.0 4.3 5.7 6.4 6.9 7.2 7.4 7.6
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Chch graze 172.6 -43.5 156km 15 21 53
MidNZ 173.0 -41.0 115km 15 22 15
Wellington 174.8 -41.3 53km 15 24 3
Lunar Limb Profile
