Predictions for Grazing Occultation of ZC2722, 2015 Sep 22
Graze profile
Grazing Occultation of 2722 B5 Magnitude 7.1 [Red = 7.1]
Date: 2015 Sep 22 9h 9m, to 2015 Sep 22 9h 29m
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 -47 4 53 9 9 7 55 319 0.71 171.9 176.77 4.73S
167 30 0 -46 58 28 9 9 56 55 317 0.71 171.8 176.70 4.81S
168 0 0 -46 51 55 9 10 45 54 316 0.72 171.7 176.62 4.88S
168 30 0 -46 45 15 9 11 34 54 315 0.73 171.7 176.54 4.96S
169 0 0 -46 38 27 9 12 23 54 314 0.73 171.6 176.47 5.03S
169 30 0 -46 31 32 9 13 12 53 313 0.74 171.5 176.39 5.11S
170 0 0 -46 24 30 9 14 1 53 312 0.75 171.4 176.32 5.18S
170 30 0 -46 17 20 9 14 50 53 311 0.76 171.4 176.25 5.26S
171 0 0 -46 10 3 9 15 39 53 310 0.76 171.3 176.17 5.33S
171 30 0 -46 2 38 9 16 28 52 309 0.77 171.2 176.10 5.40S
172 0 0 -45 55 6 9 17 17 52 308 0.78 171.1 176.03 5.47S
172 30 0 -45 47 27 9 18 6 52 307 0.79 171.1 175.96 5.54S
173 0 0 -45 39 40 9 18 55 51 306 0.80 171.0 175.89 5.61S
173 30 0 -45 31 47 9 19 44 51 305 0.81 170.9 175.83 5.68S
174 0 0 -45 23 46 9 20 32 51 304 0.82 170.9 175.76 5.74S
174 30 0 -45 15 38 9 21 21 50 303 0.83 170.8 175.69 5.81S
175 0 0 -45 7 24 9 22 10 50 302 0.84 170.7 175.63 5.87S
175 30 0 -44 59 2 9 22 58 50 301 0.85 170.7 175.56 5.94S
176 0 0 -44 50 33 9 23 47 49 300 0.86 170.6 175.50 6.00S
176 30 0 -44 41 58 9 24 35 49 299 0.87 170.6 175.44 6.06S
177 0 0 -44 33 16 9 25 23 49 298 0.88 170.5 175.38 6.12S
177 30 0 -44 24 27 9 26 11 48 297 0.89 170.4 175.32 6.18S
178 0 0 -44 15 31 9 26 59 48 296 0.91 170.4 175.26 6.24S
178 30 0 -44 6 29 9 27 47 47 296 0.92 170.3 175.21 6.29S
179 0 0 -43 57 21 9 28 35 47 295 0.93 170.3 175.15 6.35S
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 -7.74 Lat -7.23
P +176.84 D -7.51
Illumination of moon 60%+
Elongation of Moon 102
Vertical Profile Scale 2.19 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.50 deg/min
At longitude 173.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
1.6 4.9 6.3 7.1 7.6 8.0 8.2 8.4
3.6 4.9 6.4 7.1 7.7 8.0 8.3 8.4
5.6 5.7 7.2 8.0 8.5 8.9 9.2 9.4
7.6 5.8 7.2 8.0 8.5 8.9 9.2 9.4
9.6 5.8 7.2 8.0 8.6 8.9 9.2 9.4
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Chch graze 172.6 -43.5 232km 9 18 19
Dunedin 170.5 -45.9 43km 9 14 50
MidNZ 173.0 -41.0 488km 9 18 55
Lunar Limb Profile
