Predictions for Grazing Occultation of ZC 2672, 2009 Jul 6
Grazing Occultation of 2672wK1 Magnitude 2.8 [Red = 2.3]
R2672 = Kaus Borealis = lambda Sagittarii
Date: 2009 Jul 06 15h 24m, to 2009 Jul 06 16h 9m
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
142 0 0 -36 1 32 15 40 11 66 289 0.44 162.4 163.83 1.98S
142 30 0 -35 48 30 15 41 20 66 288 0.45 162.3 163.68 2.13S
143 0 0 -35 35 13 15 42 28 65 287 0.46 162.1 163.53 2.28S
143 30 0 -35 21 41 15 43 37 65 285 0.47 162.0 163.39 2.43S
144 0 0 -35 7 53 15 44 46 64 284 0.48 161.8 163.24 2.57S
144 30 0 -34 53 51 15 45 54 64 283 0.50 161.7 163.10 2.71S
145 0 0 -34 39 35 15 47 3 63 282 0.51 161.6 162.96 2.85S
145 30 0 -34 25 3 15 48 12 62 281 0.52 161.4 162.83 2.99S
146 0 0 -34 10 17 15 49 21 62 279 0.53 161.3 162.70 3.12S
146 30 0 -33 55 16 15 50 30 61 278 0.55 161.2 162.57 3.25S
147 0 0 -33 40 1 15 51 39 61 277 0.56 161.0 162.44 3.38S
147 30 0 -33 24 32 15 52 48 60 276 0.58 160.9 162.32 3.50S
148 0 0 -33 8 49 15 53 57 59 275 0.59 160.8 162.20 3.62S
148 30 0 -32 52 53 15 55 6 59 274 0.61 160.7 162.09 3.74S
149 0 0 -32 36 43 15 56 15 58 273 0.62 160.6 161.97 3.85S
149 30 0 -32 20 20 15 57 24 57 272 0.64 160.5 161.86 3.96S
150 0 0 -32 3 44 15 58 32 57 272 0.65 160.3 161.76 4.07S
150 30 0 -31 46 55 15 59 41 56 271 0.67 160.2 161.66 4.17S
151 0 0 -31 29 54 16 0 49 55 270 0.69 160.1 161.56 4.27S
151 30 0 -31 12 42 16 1 57 55 269 0.71 160.1 161.46 4.37S
152 0 0 -30 55 17 16 3 5 54 268 0.72 160.0 161.37 4.46S
152 30 0 -30 37 41 16 4 12 53 268 0.74 159.9 161.28 4.55S
153 0 0 -30 19 54 16 5 19 53 267 0.76 159.8 161.20 4.64S
153 30 0 -30 1 56 16 6 26 52 266 0.78 159.7 161.11 4.73S
154 0 0 -29 43 49 16 7 32 51 265 0.80 159.6 161.03 4.80S
154 30 0 -29 25 31 16 8 38 51 265 0.82 159.6 160.96 4.88S
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 9 meters
2672 is double:
AB 2.8 9.8 85" 185.5 Graze path of B 141.77 km north, and 101.6 secs earlier compared to A
Librations Long +1.26 Lat +2.54
P +163.14 D +3.06
Illumination of moon 99%+
Elongation of Moon 171
Vertical Profile Scale 1.93 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.31 deg/min
At longitude 144.50:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
-1.3 2.1 3.5 4.3 4.8 5.1 5.3 5.5
0.7 2.1 3.5 4.3 4.8 5.1 5.3 5.5
2.7 2.1 3.5 4.3 4.8 5.1 5.3 5.5
4.7 2.1 3.5 4.3 4.8 5.1 5.3 5.5
6.7 2.1 3.5 4.3 4.8 5.1 5.3 5.5
Lunar Limb Profile - Sydney, distant
