Predictions for Grazing Occultation of ZC2876, 2016 Feb 6
Graze profile
Grazing Occultation of 2876SK1 Magnitude 5.3 [Red = 4.7]
R2876 = 54 Sagittarii
Date: 2016 Feb 06 18h 41m, to 2016 Feb 06 18h 45m
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
139 30 0 -29 43 48.4 18 40 37 0 109 99.00 359.1 9.70 2.20N
140 0 0 -29 52 49.6 18 40 38 1 108 99.00 359.1 9.69 2.21N
140 30 0 -30 1 48.7 18 40 39 1 108 56.43 359.1 9.69 2.21N
141 0 0 -30 10 46.3 18 40 41 1 108 38.75 359.0 9.68 2.22N
141 30 0 -30 19 42.6 18 40 43 2 108 29.49 359.0 9.68 2.22N
142 0 0 -30 28 37.8 18 40 45 2 107 23.79 359.0 9.67 2.23N
142 30 0 -30 37 31.6 18 40 48 3 107 19.94 359.0 9.66 2.24N
143 0 0 -30 46 24.9 18 40 51 3 107 17.15 359.0 9.66 2.24N
143 30 0 -30 55 17.4 18 40 55 4 107 15.04 359.0 9.65 2.25N
144 0 0 -31 4 8.9 18 40 59 4 106 13.39 359.0 9.64 2.26N
144 30 0 -31 12 59.0 18 41 3 5 106 12.06 359.0 9.63 2.26N
145 0 0 -31 21 48.8 18 41 8 5 106 10.97 359.0 9.63 2.27N
145 30 0 -31 30 37.5 18 41 14 6 106 10.06 359.0 9.62 2.28N
146 0 0 -31 39 25.2 18 41 20 6 105 9.28 359.0 9.61 2.29N
146 30 0 -31 48 11.8 18 41 26 7 105 8.62 359.0 9.60 2.30N
147 0 0 -31 56 57.3 18 41 33 7 105 8.04 359.0 9.59 2.31N
147 30 0 -32 5 41.7 18 41 41 8 104 7.53 358.9 9.57 2.32N
148 0 0 -32 14 24.7 18 41 49 -12 8 104 7.08 358.9 9.56 2.34N
148 30 0 -32 23 6.5 18 41 57 -11 9 104 6.68 358.9 9.55 2.35N
149 0 0 -32 31 46.9 18 42 6 -11 9 104 6.32 358.9 9.54 2.36N
149 30 0 -32 40 25.9 18 42 15 -10 9 103 6.00 358.9 9.52 2.38N
150 0 0 -32 49 3.4 18 42 25 -10 10 103 5.71 358.9 9.51 2.39N
150 30 0 -32 57 39.3 18 42 35 -9 10 103 5.44 358.9 9.49 2.41N
151 0 0 -33 6 13.7 18 42 46 -9 11 102 5.20 358.8 9.47 2.42N
151 30 0 -33 14 46.3 18 42 57 -8 11 102 4.97 358.8 9.46 2.44N
152 0 0 -33 23 17.2 18 43 9 -8 12 102 4.77 358.8 9.44 2.46N
152 30 0 -33 31 46.3 18 43 22 -7 12 101 4.58 358.8 9.42 2.47N
153 0 0 -33 40 13.6 18 43 34 -7 13 101 4.40 358.8 9.40 2.50N
153 30 0 -33 48 38.8 18 43 48 -6 13 101 4.23 358.7 9.38 2.52N
154 0 0 -33 57 1.9 18 44 1 -6 14 101 4.08 358.7 9.36 2.54N
154 30 0 -34 5 22.9 18 44 16 -6 14 100 3.94 358.7 9.34 2.56N
155 0 0 -34 13 41.8 18 44 31 -5 15 100 3.80 358.7 9.31 2.58N
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.
Projected diameter of star 4 meters [Estimated]
2876 is quadruple:
AC 5.4 7.7 46" 41.0 (HJ 599) Graze path of C approximately 70.0 km south, and 53.5 secs later compared to A
- refer to graze profile for exact distances
AB 5.4 12.6 46" 279.2 (HJ 599) Graze path of B approximately 17.2 km south, and 79.9 secs earlier compared to A
- refer to graze profile for exact distances
AD 5.4 13.9 57" 252.0 (ANT 6) Graze path of D approximately 34.4 km north, and 95.7 secs earlier compared to A
- refer to graze profile for exact distances
Librations Long -4.75 Lat -6.11
P +10.11 D +5.50
Illumination of moon 4%-
Elongation of Moon 23
Vertical Profile Scale approx. 2.03 km/arcsec at mean distance of moon
Horizontal Scale Factor 2.07 deg/min
At longitude 147.50:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
-1.7 6.2 7.7 8.5 9.0 9.4 9.6 9.8
0.3 6.4 7.8 8.6 9.1 9.5 9.8 10.0
2.3 6.4 7.8 8.6 9.2 9.5 9.8 10.0
4.3 6.4 7.9 8.7 9.2 9.6 9.8 10.1
6.3 6.4 7.9 8.7 9.2 9.6 9.9 10.1
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
AU Mid 143.0 -30.6 18km 18 40 51.1
Canberra 149.2 -35.3 284km 18 42 8.7
Newcastle 151.7 -33.0 38km 18 43 2.6
Pt Macquarie 152.8 -31.4 235km 18 43 30.1
Sydney 151.1 -33.8 75km 18 42 47.7
Lunar Limb Profile
