Predictions for Grazing Occultation of ZC 837, 2014 Jan 13
Graze profile
Grazing Occultation of 837 B6 Magnitude 6.2 [Red = 6.2]
Date: 2014 Jan 13 12h 57m, to 2014 Jan 13 13h 9m
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 -40 23 45 12 56 45 23 329 2.36 6.4 9.97 14.43N
167 30 0 -40 35 10 12 57 27 23 328 2.41 6.5 10.03 14.49N
168 0 0 -40 46 42 12 58 7 22 328 2.46 6.6 10.09 14.55N
168 30 0 -40 58 22 12 58 46 22 327 2.51 6.6 10.14 14.60N
169 0 0 -41 10 8 12 59 24 21 327 2.57 6.7 10.19 14.66N
169 30 0 -41 22 1 13 0 1 21 326 2.63 6.7 10.24 14.71N
170 0 0 -41 33 59 13 0 38 20 326 2.69 6.8 10.29 14.75N
170 30 0 -41 46 4 13 1 13 20 325 2.76 6.8 10.33 14.80N
171 0 0 -41 58 14 13 1 48 19 324 2.83 6.8 10.38 14.84N
171 30 0 -42 10 29 13 2 21 19 324 2.90 6.9 10.42 14.88N
172 0 0 -42 22 49 13 2 54 19 323 2.97 6.9 10.45 14.91N
172 30 0 -42 35 14 13 3 26 18 323 3.05 7.0 10.49 14.95N
173 0 0 -42 47 43 13 3 56 18 322 3.13 7.0 10.52 14.98N
173 30 0 -43 0 16 13 4 26 17 322 3.22 7.0 10.55 15.01N
174 0 0 -43 12 53 13 4 55 17 321 3.31 7.0 10.57 15.04N
174 30 0 -43 25 33 13 5 23 16 321 3.40 7.1 10.60 15.06N
175 0 0 -43 38 17 13 5 51 16 320 3.51 7.1 10.62 15.08N
175 30 0 -43 51 4 13 6 17 15 320 3.61 7.1 10.64 15.10N
176 0 0 -44 3 54 13 6 42 15 319 3.72 7.1 10.66 15.12N
176 30 0 -44 16 47 13 7 7 15 319 3.84 7.1 10.68 15.14N
177 0 0 -44 29 42 13 7 31 14 319 3.97 7.2 10.69 15.15N
177 30 0 -44 42 39 13 7 54 14 318 4.10 7.2 10.71 15.17N
178 0 0 -44 55 38 13 8 16 13 318 4.25 7.2 10.72 15.18N
178 30 0 -45 8 39 13 8 37 13 317 4.40 7.2 10.73 15.19N
179 0 0 -45 21 41 13 8 58 12 317 4.56 7.2 10.73 15.19N
Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level.
Projected diameter of star 1 meters [CHARM/CADARS, 3 measures]
Librations Long +2.81 Lat +4.25
P +10.72 D -3.40
Illumination of moon 94%+
Elongation of Moon 151
Vertical Profile Scale 3.32 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.41 deg/min
At longitude 173.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
11.0 4.0 5.4 6.0 6.4 6.6 6.8 6.9
13.0 4.0 5.4 6.0 6.4 6.6 6.8 6.9
15.0 4.4 5.7 6.4 6.8 7.0 7.2 7.3
17.0 4.8 6.1 6.8 7.2 7.4 7.6 7.7
19.0 4.8 6.2 6.9 7.3 7.5 7.7 7.8
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Chch graze 172.6 -43.5 85km 13 3 34
Lunar Limb Profile
