Predictions for Grazing Occultation of ZC2279, 2016 Jul 15
Graze profile
Grazing Occultation of 2279SA2 Magnitude 6.1 [Red = 6.0] v
Date: 2016 Jul 15 8h 57m, to 2016 Jul 15 9h 57m
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
135 0 0 -22 19 2.1 8 56 33 -6 55 85 0.71 21.7 9.50 5.96N
135 30 0 -22 33 56.6 8 57 51 -7 55 84 0.69 21.6 9.49 5.95N
136 0 0 -22 48 48.4 8 59 11 -7 56 83 0.67 21.6 9.47 5.93N
136 30 0 -23 3 37.4 9 0 31 -8 57 82 0.65 21.6 9.45 5.91N
137 0 0 -23 18 23.0 9 1 53 -9 58 81 0.64 21.6 9.42 5.88N
137 30 0 -23 33 4.9 9 3 15 -10 58 80 0.62 21.5 9.39 5.85N
138 0 0 -23 47 42.6 9 4 39 -11 59 79 0.60 21.5 9.35 5.81N
138 30 0 -24 2 15.7 9 6 3 -12 60 78 0.58 21.5 9.31 5.77N
139 0 0 -24 16 44.0 9 7 28 60 77 0.57 21.4 9.27 5.73N
139 30 0 -24 31 6.8 9 8 54 61 76 0.55 21.4 9.22 5.68N
140 0 0 -24 45 23.9 9 10 21 62 75 0.54 21.3 9.17 5.63N
140 30 0 -24 59 34.8 9 11 49 63 74 0.52 21.3 9.11 5.57N
141 0 0 -25 13 39.2 9 13 17 63 73 0.50 21.2 9.05 5.51N
141 30 0 -25 27 36.6 9 14 47 64 71 0.49 21.1 8.98 5.45N
142 0 0 -25 41 26.7 9 16 16 65 70 0.48 21.1 8.92 5.38N
142 30 0 -25 55 9.1 9 17 47 65 69 0.46 21.0 8.84 5.30N
143 0 0 -26 8 43.4 9 19 18 66 67 0.45 20.9 8.76 5.22N
143 30 0 -26 22 9.3 9 20 50 67 65 0.43 20.8 8.68 5.14N
144 0 0 -26 35 26.4 9 22 22 67 64 0.42 20.7 8.59 5.06N
144 30 0 -26 48 34.4 9 23 55 68 62 0.41 20.7 8.50 4.96N
145 0 0 -27 1 32.9 9 25 28 68 60 0.40 20.6 8.41 4.87N
145 30 0 -27 14 21.6 9 27 1 69 58 0.39 20.5 8.31 4.77N
146 0 0 -27 27 0.3 9 28 35 69 56 0.37 20.4 8.20 4.67N
146 30 0 -27 39 28.6 9 30 10 70 54 0.36 20.2 8.10 4.56N
147 0 0 -27 51 46.2 9 31 44 71 52 0.35 20.1 7.98 4.45N
147 30 0 -28 3 53.0 9 33 19 71 50 0.34 20.0 7.87 4.33N
148 0 0 -28 15 48.6 9 34 54 71 47 0.34 19.9 7.75 4.21N
148 30 0 -28 27 32.7 9 36 29 72 45 0.33 19.8 7.63 4.09N
149 0 0 -28 39 5.3 9 38 5 72 42 0.32 19.7 7.50 3.96N
149 30 0 -28 50 26.0 9 39 40 73 39 0.31 19.5 7.37 3.83N
150 0 0 -29 1 34.6 9 41 16 73 37 0.31 19.4 7.23 3.70N
150 30 0 -29 12 31.0 9 42 52 73 34 0.30 19.2 7.10 3.56N
151 0 0 -29 23 15.1 9 44 27 74 31 0.29 19.1 6.96 3.42N
151 30 0 -29 33 46.6 9 46 3 74 28 0.29 19.0 6.81 3.28N
152 0 0 -29 44 5.4 9 47 38 74 25 0.29 18.8 6.67 3.13N
152 30 0 -29 54 11.4 9 49 14 74 21 0.28 18.7 6.52 2.98N
153 0 0 -30 4 4.5 9 50 49 74 18 0.28 18.5 6.37 2.83N
153 30 0 -30 13 44.7 9 52 24 74 15 0.28 18.4 6.21 2.67N
154 0 0 -30 23 11.7 9 53 59 74 12 0.28 18.2 6.05 2.52N
154 30 0 -30 32 25.5 9 55 34 74 8 0.28 18.0 5.90 2.36N
155 0 0 -30 41 26.1 9 57 8 74 5 0.28 17.9 5.73 2.20N
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.
2279 is variable:
2279 = HR Lib, 6.12, range 0.02, V, Type DSCTC, Period 0.05886 days
2279 is triple:
This next pair is not confirmed
** 7.0 7.0 0.10" 90.0 (OCc1485) Graze path of ? approximately 0.1 km south, and 0.3 secs later compared to the primary
- refer to graze profile for exact distances
AB 6.1 19.0 6.7" 77.0 (VIG 18) Graze path of B approximately 6.9 km south, and 17.9 secs later compared to A
- refer to graze profile for exact distances
Librations Long -2.06 Lat -6.70
P +8.71 D +6.59
Illumination of moon 80%+
Elongation of Moon 127
Vertical Profile Scale approx. 1.93 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.20 deg/min
At longitude 145.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
0.9 2.7 4.2 5.0 5.4 5.8 6.0 6.2
2.9 3.8 5.3 6.0 6.6 6.9 7.2 7.3
4.9 4.8 6.2 7.0 7.5 7.9 8.2 8.3
6.9 4.8 6.3 7.1 7.6 8.0 8.2 8.4
8.9 5.7 7.1 7.9 8.5 8.8 9.1 9.3
------------------------------------------------
AAVSO Variable star entry
Variable identifier Type Max Min Ph Epoch Period
HR Lib DSCTC 6.12 ( 0.02 V 0.05886
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
AU Mid 143.0 -30.6 439km 9 19 18.1
Lunar Limb Profile
