Predictions for Grazing Occultation of ZC 2987, 2009 Jun 11
Grazing Occultation of 2987SF3 Magnitude 4.9 [Red = 0.0]
R2987 = rho Capricorni
Date: 2009 Jun 11 20h 13m, to 2009 Jun 11 21h 1m
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
140 0 0 -42 2 56 20 27 53 48 293 0.89 329.3 341.78 15.69N
140 30 0 -41 38 56 20 29 12 48 292 0.90 329.3 341.74 15.73N
141 0 0 -41 14 48 20 30 32 47 291 0.92 329.2 341.70 15.76N
141 30 0 -40 50 32 20 31 51 47 289 0.93 329.2 341.67 15.80N
142 0 0 -40 26 8 20 33 10 47 288 0.95 329.2 341.64 15.83N
142 30 0 -40 1 38 20 34 28 46 287 0.96 329.1 341.62 15.85N
143 0 0 -39 37 3 20 35 46 46 286 0.98 329.1 341.59 15.87N
143 30 0 -39 12 24 20 37 4 45 285 1.00 329.1 341.58 15.89N
144 0 0 -38 47 42 20 38 21 -11 45 284 1.01 329.1 341.57 15.90N
144 30 0 -38 22 58 20 39 37 -11 44 283 1.03 329.1 341.56 15.91N
145 0 0 -37 58 12 20 40 52 -10 44 282 1.05 329.1 341.55 15.91N
145 30 0 -37 33 27 20 42 7 -9 43 281 1.07 329.1 341.55 15.91N
146 0 0 -37 8 42 20 43 21 -8 42 280 1.10 329.1 341.56 15.91N
146 30 0 -36 44 0 20 44 34 -8 42 279 1.12 329.1 341.57 15.90N
147 0 0 -36 19 20 20 45 46 -7 41 278 1.14 329.1 341.58 15.89N
147 30 0 -35 54 45 20 46 57 -6 41 277 1.16 329.1 341.60 15.87N
148 0 0 -35 30 14 20 48 6 -5 40 276 1.19 329.2 341.62 15.85N
148 30 0 -35 5 48 20 49 15 -5 39 275 1.21 329.2 341.64 15.82N
149 0 0 -34 41 29 20 50 23 -4 39 275 1.24 329.2 341.67 15.79N
149 30 0 -34 17 18 20 51 30 -3 38 274 1.27 329.2 341.71 15.76N
150 0 0 -33 53 15 20 52 35 -2 38 273 1.30 329.3 341.74 15.73N
Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level.
2987 is quadruple:
AB 5.0 6.9 1.6" 190.3 Graze path of B 2.64 km north, and 2.7 secs earlier compared to A
AC 4.9 13.2 58" 141.5 Graze path of C 125.49 km north, and 19.3 secs later compared to A
AD 4.8 6.6 258" 149.9 Graze path of D 563.08 km north, and 9.1 secs earlier compared to A
Librations Long -3.11 Lat -1.04
P +341.64 D +2.23
Illumination of moon 86%-
Elongation of Moon 136
Vertical Profile Scale 2.30 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.54 deg/min
At longitude 144.50:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
11.9 5.5 6.9 7.7 8.2 8.5 8.8 9.0
13.9 5.5 6.9 7.7 8.2 8.6 8.8 9.0
15.9 5.5 6.9 7.7 8.2 8.6 8.8 9.0
17.9 5.5 7.0 7.7 8.2 8.6 8.8 9.0
19.9 5.5 7.0 7.7 8.2 8.6 8.8 9.0
Lunar Limb Profile - Melbourne
