Predictions for Grazing Occultation of ZC2495, 2015 Mar 13
Graze profile
Grazing Occultation of 2495SA0 Magnitude 6.0 [Red = 5.9]
Date: 2015 Mar 13 12h 37m, to 2015 Mar 13 12h 43m
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 -40 37 56 12 36 33 9 106 6.29 188.0 183.54 4.28S
167 30 0 -40 48 53 12 36 44 9 105 5.99 188.0 183.55 4.29S
168 0 0 -40 59 52 12 36 55 10 105 5.71 188.0 183.56 4.30S
168 30 0 -41 10 54 12 37 7 10 105 5.46 188.0 183.57 4.31S
169 0 0 -41 21 57 12 37 20 11 104 5.23 188.0 183.58 4.32S
169 30 0 -41 33 2 12 37 33 11 104 5.02 188.0 183.59 4.33S
170 0 0 -41 44 9 12 37 47 12 103 4.82 188.0 183.60 4.34S
170 30 0 -41 55 17 12 38 1 12 103 4.64 188.0 183.61 4.35S
171 0 0 -42 6 27 12 38 15 13 103 4.47 188.1 183.62 4.36S
171 30 0 -42 17 38 12 38 30 13 102 4.31 188.1 183.63 4.37S
172 0 0 -42 28 51 12 38 46 14 102 4.16 188.1 183.63 4.37S
172 30 0 -42 40 5 12 39 2 14 101 4.02 188.1 183.64 4.38S
173 0 0 -42 51 20 12 39 18 14 101 3.89 188.1 183.65 4.39S
173 30 0 -43 2 36 12 39 35 15 101 3.77 188.1 183.65 4.39S
174 0 0 -43 13 54 12 39 53 15 100 3.66 188.1 183.65 4.39S
174 30 0 -43 25 11 12 40 11 16 100 3.55 188.1 183.66 4.40S
175 0 0 -43 36 29 12 40 30 16 99 3.44 188.1 183.66 4.40S
175 30 0 -43 47 48 12 40 49 17 99 3.35 188.1 183.66 4.40S
176 0 0 -43 59 7 12 41 8 17 98 3.26 188.1 183.66 4.40S
176 30 0 -44 10 26 12 41 28 18 98 3.17 188.1 183.66 4.40S
177 0 0 -44 21 45 12 41 49 18 98 3.09 188.1 183.66 4.40S
177 30 0 -44 33 5 12 42 9 18 97 3.01 188.1 183.66 4.40S
178 0 0 -44 44 24 12 42 31 19 97 2.93 188.1 183.66 4.40S
178 30 0 -44 55 44 12 42 53 19 96 2.86 188.1 183.66 4.40S
179 0 0 -45 7 3 12 43 15 20 96 2.79 188.1 183.66 4.40S
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.
2495 is triple:
Graze prediction is based on the mean position of AB 6.34 7.56 2.31" 263.3
(BU 126) Graze path of A 0.36 km south, and 1.0 secs later compared to prediction
Graze path of B 1.11 km north, and 3.1 secs earlier compared to prediction
AB 6.34 7.56 2.31" 263.3 (BU 126) Graze path of B 1.46 km north, and 4.1 secs earlier compared to A
AC 6.3 11.2 12.1" 137.6 (BU 126) Graze path of C 19.04 km north, and 17.2 secs later compared to A
C A S S I N I R E G I O N G R A Z E
Librations Long -7.09 Lat -7.04
P +184.48 D -6.32
Illumination of moon 52%-
Elongation of Moon 92
Vertical Profile Scale 2.48 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.99 deg/min
At longitude 173.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
0.4 4.3 5.6 6.3 6.6 6.9 7.0 7.1
2.4 4.3 5.6 6.3 6.7 6.9 7.1 7.2
4.4 5.0 6.4 7.1 7.5 7.7 7.9 8.0
6.4 5.0 6.4 7.1 7.5 7.7 7.9 8.0
8.4 5.0 6.4 7.1 7.5 7.8 7.9 8.1
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Double star catalogue details
Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Chch graze 172.6 -43.5 80km 12 39 6
MidNZ 173.0 -41.0 184km 12 39 18
Wellington 174.8 -41.3 222km 12 40 22
Lunar Limb Profile
