Predictions for Grazing Occultation of ZC 2479, 2009 Aug 1
Grazing Occultation of 2479SK2 Magnitude 5.1 [Red = 4.6]
R2479 = 36 Ophiuchi N
Date: 2009 Aug 01 12h 35m, to 2009 Aug 01 13h 18m
Nominal site altitude 5m
E. Longit. Latitude U.T. Sun Moon TanZ PA AA CA
o ' " o ' " h m s Alt Alt Az o o o
145 0 0 -30 23 45 12 58 6 63 270 0.52 172.1 166.56 9.40S
145 30 0 -30 13 54 12 59 11 62 269 0.53 172.0 166.39 9.57S
146 0 0 -30 3 48 13 0 15 61 269 0.55 171.8 166.22 9.74S
146 30 0 -29 53 29 13 1 20 61 268 0.56 171.6 166.05 9.91S
147 0 0 -29 42 56 13 2 24 60 267 0.58 171.5 165.89 10.07S
147 30 0 -29 32 10 13 3 28 59 267 0.59 171.3 165.73 10.23S
148 0 0 -29 21 10 13 4 31 59 266 0.61 171.2 165.57 10.39S
148 30 0 -29 9 56 13 5 35 58 265 0.62 171.0 165.42 10.54S
149 0 0 -28 58 29 13 6 38 57 265 0.64 170.8 165.27 10.69S
149 30 0 -28 46 49 13 7 40 57 264 0.66 170.7 165.12 10.84S
150 0 0 -28 34 57 13 8 43 56 264 0.68 170.6 164.98 10.98S
150 30 0 -28 22 51 13 9 45 55 263 0.69 170.4 164.84 11.12S
151 0 0 -28 10 33 13 10 47 55 263 0.71 170.3 164.70 11.26S
151 30 0 -27 58 3 13 11 48 54 262 0.73 170.1 164.57 11.39S
152 0 0 -27 45 20 13 12 49 53 262 0.75 170.0 164.44 11.52S
152 30 0 -27 32 26 13 13 50 53 261 0.77 169.9 164.31 11.65S
153 0 0 -27 19 19 13 14 50 52 261 0.79 169.8 164.19 11.77S
153 30 0 -27 6 2 13 15 50 51 260 0.81 169.6 164.07 11.89S
154 0 0 -26 52 33 13 16 49 50 260 0.83 169.5 163.95 12.01S
154 30 0 -26 38 53 13 17 48 50 259 0.85 169.4 163.84 12.12S
Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level.
Projected diameter of star 3 meters
2479 is multiple:
AB 4.3 4.3 5.0" 142.9 Graze path of B 7.72 km north, and 7.5 secs later compared to A
B is ZC 2480
Aa 5.3 13.5 40" 8.4 Graze path of a 69.39 km south, and 34.6 secs later compared to A
AD 4.3 7.6 282" 342.2 Graze path of D 497.32 km south, and 153.9 secs earlier compared to A
AC 4.3 6.3 732" 74.0 Graze path of C 189.13 km south, and 2242.0 secs later compared to A
For C, see graze of ZC 2483
Librations Long +3.95 Lat +4.29
P +167.02 D +5.34
Illumination of moon 83%+
Elongation of Moon 131
Vertical Profile Scale 1.88 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.25 deg/min
At longitude 144.50:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
5.2 4.7 6.2 7.0 7.5 7.8 8.1 8.3
7.2 4.7 6.2 7.0 7.5 7.8 8.1 8.3
9.2 5.5 7.0 7.8 8.3 8.7 8.9 9.1
11.2 5.6 7.1 7.9 8.4 8.8 9.1 9.3
13.2 5.6 7.1 7.9 8.4 8.8 9.1 9.3
Lunar Limb Profile - Brisbane
