Predictions for Grazing Occultation of ZC2653, 2016 May 24
Graze profile
Grazing Occultation of 2653SB0 Magnitude 6.8 [Red = 6.7] s
R2653 = 17 H1. Sagittarii
Date: 2016 May 24 13h 14m, to 2016 May 24 13h 50m
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 -21 31 13.0 13 13 35 35 98 1.44 188.0 190.43 18.25S
135 30 0 -21 42 0.5 13 14 16 35 98 1.40 188.0 190.41 18.22S
136 0 0 -21 52 45.1 13 14 59 36 98 1.37 187.9 190.37 18.19S
136 30 0 -22 3 26.6 13 15 42 37 97 1.34 187.9 190.34 18.16S
137 0 0 -22 14 4.7 13 16 27 37 97 1.31 187.9 190.30 18.12S
137 30 0 -22 24 39.3 13 17 11 38 97 1.28 187.8 190.27 18.08S
138 0 0 -22 35 10.3 13 17 57 39 96 1.25 187.8 190.22 18.03S
138 30 0 -22 45 37.5 13 18 43 39 96 1.22 187.7 190.17 17.99S
139 0 0 -22 56 0.6 13 19 30 40 96 1.19 187.7 190.13 17.95S
139 30 0 -23 6 19.6 13 20 18 41 95 1.16 187.7 190.08 17.90S
140 0 0 -23 16 34.2 13 21 7 41 95 1.14 187.6 190.03 17.85S
140 30 0 -23 26 44.2 13 21 56 42 95 1.11 187.6 189.98 17.80S
141 0 0 -23 36 49.6 13 22 46 43 94 1.08 187.5 189.93 17.75S
141 30 0 -23 46 50.0 13 23 36 43 94 1.06 187.4 189.87 17.69S
142 0 0 -23 56 45.3 13 24 28 44 93 1.04 187.4 189.81 17.63S
142 30 0 -24 6 35.3 13 25 19 45 93 1.01 187.3 189.75 17.57S
143 0 0 -24 16 19.9 13 26 12 45 93 0.99 187.3 189.69 17.51S
143 30 0 -24 25 58.9 13 27 5 46 92 0.97 187.2 189.62 17.44S
144 0 0 -24 35 32.0 13 27 59 47 92 0.94 187.1 189.55 17.37S
144 30 0 -24 44 59.0 13 28 54 47 91 0.92 187.1 189.48 17.30S
145 0 0 -24 54 20.0 13 29 49 48 91 0.90 187.0 189.41 17.23S
145 30 0 -25 3 34.5 13 30 45 49 90 0.88 186.9 189.33 17.16S
146 0 0 -25 12 42.5 13 31 41 49 90 0.86 186.8 189.26 17.08S
146 30 0 -25 21 43.7 13 32 38 50 89 0.84 186.8 189.18 17.00S
147 0 0 -25 30 38.1 13 33 36 51 89 0.82 186.7 189.09 16.91S
147 30 0 -25 39 25.4 13 34 34 51 88 0.80 186.6 189.01 16.83S
148 0 0 -25 48 5.4 13 35 32 52 88 0.78 186.5 188.92 16.74S
148 30 0 -25 56 38.0 13 36 32 53 87 0.76 186.4 188.83 16.65S
149 0 0 -26 5 3.0 13 37 31 53 87 0.74 186.3 188.73 16.56S
149 30 0 -26 13 20.2 13 38 32 54 86 0.73 186.2 188.64 16.46S
150 0 0 -26 21 29.5 13 39 33 55 85 0.71 186.1 188.54 16.36S
150 30 0 -26 29 30.7 13 40 34 55 85 0.69 186.0 188.44 16.26S
151 0 0 -26 37 23.6 13 41 36 56 84 0.67 185.9 188.33 16.16S
151 30 0 -26 45 8.1 13 42 38 57 84 0.66 185.8 188.23 16.05S
152 0 0 -26 52 44.0 13 43 41 57 83 0.64 185.7 188.12 15.95S
152 30 0 -27 0 11.2 13 44 45 58 82 0.63 185.6 188.01 15.84S
153 0 0 -27 7 29.5 13 45 48 59 82 0.61 185.5 187.89 15.72S
153 30 0 -27 14 38.8 13 46 53 59 81 0.59 185.4 187.78 15.61S
154 0 0 -27 21 38.9 13 47 57 60 80 0.58 185.2 187.66 15.49S
154 30 0 -27 28 29.7 13 49 2 61 79 0.56 185.1 187.54 15.37S
155 0 0 -27 35 11.1 13 50 8 61 79 0.55 185.0 187.41 15.24S
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.
2653 is variable:
2653 = NSV 10543, 6.43 to 6.82, V
2653 is quadruple:
AB 7.2 8.2 0.49" 139.0 (BU 639) Graze path of B approximately 0.6 km north, and 1.0 secs later compared to A
- refer to graze profile for exact distances
AB,C 6.9 7.6 17.2" 51.0 (SHJ 264) Graze path of C approximately 22.8 km south, and 32.7 secs later compared to AB
- refer to graze profile for exact distances
AB,E 6.9 10.8 145" 327.8 (FOX 225) Graze path of E approximately 207.8 km south, and 251.1 secs earlier compared to AB
- refer to graze profile for exact distances
Librations Long -4.63 Lat -6.46
P +189.92 D -5.36
Illumination of moon 93%-
Elongation of Moon 149
Vertical Profile Scale approx. 1.90 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.39 deg/min
At longitude 145.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
13.2 4.7 6.2 6.9 7.4 7.8 8.0 8.2
15.2 5.2 6.6 7.4 7.9 8.3 8.5 8.7
17.2 5.4 6.9 7.7 8.2 8.5 8.8 9.0
19.2 5.5 6.9 7.7 8.2 8.5 8.8 9.0
21.2 5.5 6.9 7.7 8.2 8.5 8.8 9.0
------------------------------------------------
AAVSO Variable star entry
Variable identifier Type Max Min Ph Epoch Period
NSV 10543 6.43 6.82 V
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
AU Mid 143.0 -30.6 658km 13 26 12.1
Bundaberg 152.3 -24.8 232km 13 44 23.5
Lunar Limb Profile
