Predictions for Grazing Occultation of R 2830, 2013 Apr
Graze profile
Grazing Occultation of 2830dA0 Magnitude 7.1 [Red = 7.0]
Date: 2013 Apr 03 14h 41m, to 2013 Apr 03 14h 44m
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
170 0 0 -42 36 56 14 40 58 27 89 1.97 173.7 181.28 1.45S
170 10 0 -42 38 59 14 41 5 27 89 1.95 173.7 181.26 1.43S
170 20 0 -42 41 2 14 41 13 27 89 1.94 173.7 181.24 1.41S
170 30 0 -42 43 4 14 41 20 27 89 1.93 173.7 181.22 1.39S
170 40 0 -42 45 6 14 41 28 28 88 1.92 173.7 181.20 1.37S
170 50 1 -42 47 7 14 41 35 28 88 1.91 173.6 181.18 1.35S
171 0 1 -42 49 7 14 41 43 28 88 1.89 173.6 181.16 1.33S
171 10 1 -42 51 7 14 41 51 28 88 1.88 173.6 181.14 1.32S
171 20 1 -42 53 6 14 41 59 28 88 1.87 173.6 181.13 1.30S
171 30 1 -42 55 5 14 42 6 28 88 1.86 173.6 181.11 1.28S
171 40 1 -42 57 3 14 42 14 28 87 1.85 173.5 181.09 1.26S
171 50 1 -42 59 0 14 42 22 29 87 1.84 173.5 181.07 1.24S
172 0 1 -43 0 57 14 42 30 29 87 1.83 173.5 181.05 1.22S
172 10 2 -43 2 53 14 42 38 29 87 1.82 173.5 181.03 1.20S
172 20 2 -43 4 49 14 42 46 29 87 1.80 173.5 181.01 1.18S
172 30 2 -43 6 44 14 42 54 29 87 1.79 173.4 180.99 1.16S
172 40 2 -43 8 38 14 43 2 29 87 1.78 173.4 180.97 1.14S
172 50 2 -43 10 32 14 43 10 29 86 1.77 173.4 180.95 1.12S
173 0 2 -43 12 25 14 43 18 30 86 1.76 173.4 180.93 1.10S
173 10 2 -43 14 18 14 43 26 30 86 1.75 173.4 180.91 1.08S
173 20 2 -43 16 10 14 43 34 30 86 1.74 173.3 180.89 1.06S
173 30 3 -43 18 1 14 43 42 30 86 1.73 173.3 180.87 1.04S
173 40 3 -43 19 52 14 43 51 30 86 1.72 173.3 180.85 1.02S
173 50 3 -43 21 42 14 43 59 30 85 1.71 173.3 180.83 1.00S
Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level.
2830 is double:
AB 6.9 13.0 5.1" 203.6 (RST3223) Graze path of B 9.34 km north, and 5.0 secs earlier compared to A
C A S S I N I R E G I O N G R A Z E
Librations Long +3.43 Lat -6.41
P +180.68 D -6.22
Illumination of moon 45%-
Elongation of Moon 84
Vertical Profile Scale 2.06 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.79 deg/min
At longitude 172.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
-2.8 3.0 4.4 5.1 5.6 5.8 6.0 6.1
-0.8 3.0 4.4 5.1 5.6 5.8 6.0 6.1
1.2 4.8 6.2 7.0 7.5 7.8 8.0 8.2
3.2 4.8 6.3 7.0 7.5 7.8 8.0 8.2
5.2 5.6 7.1 7.8 8.3 8.7 8.9 9.1
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Double star catalogue details
WDS entries
RA Dec Name Y1 Y2 N PA PA Sep Sep M1 M2
19238-1712RST3223 1935 1999 3 206 204 5.3 5.1 6.9 13.0 A0V +008-032 -17 5611 D 192348.94-171144.6
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Interferometric catalogue entries
192348.94-171144.6 . RST3223 BD-17 5611 HIP 95343 19238-1712
Date PA Sep M1 M2
1991.25 . . < 0.1 . 7.06 . . . 511 222 0.3 1 HIP1997e Hh
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Chch graze 172.6 -43.5 42km 14 43 0
Lunar Limb Profile
