Predictions for Grazing Occultation of ZC 1815, 2008 Jun 12
Grazing Occultation of 1815 SK2 Magnitude 4.7
1815 = chi Virginis
Date 2008 June 12 (Thursday) Nominal site altitude 0m
E. Longit. Latitude U.T. Sun Moon TanZ PA WA CA
o ' " o ' " h m s Alt Alt Az o o o
147 0 0 -33 14 5 10 10 22 63 336 0.51 40.4 18.51 18.69N
147 10 0 -33 20 56 10 10 53 63 335 0.51 40.4 18.44 18.62N
147 20 0 -33 27 45 10 11 24 63 335 0.52 40.3 18.37 18.55N
147 30 0 -33 34 30 10 11 54 62 334 0.52 40.2 18.31 18.48N
147 40 0 -33 41 12 10 12 25 62 334 0.53 40.2 18.24 18.42N
147 50 0 -33 47 52 10 12 55 62 333 0.53 40.1 18.17 18.35N
148 0 0 -33 54 28 10 13 25 62 333 0.54 40.0 18.10 18.28N
148 10 0 -34 1 2 10 13 55 62 332 0.54 40.0 18.03 18.21N
148 20 0 -34 7 33 10 14 25 61 332 0.55 39.9 17.97 18.14N
148 30 0 -34 14 1 10 14 55 61 331 0.55 39.8 17.90 18.08N
148 40 0 -34 20 26 10 15 24 61 331 0.56 39.8 17.83 18.01N
148 50 0 -34 26 48 10 15 53 61 331 0.56 39.7 17.76 17.94N
149 0 0 -34 33 8 10 16 22 60 330 0.57 39.6 17.69 17.87N
149 10 0 -34 39 24 10 16 51 60 330 0.57 39.6 17.63 17.80N
149 20 0 -34 45 38 10 17 20 60 329 0.58 39.5 17.56 17.74N
149 30 0 -34 51 49 10 17 49 60 329 0.58 39.4 17.49 17.67N
149 40 0 -34 57 58 10 18 17 60 328 0.59 39.4 17.42 17.60N
149 50 0 -35 4 3 10 18 45 59 328 0.59 39.3 17.35 17.53N
150 0 0 -35 10 6 10 19 13 59 328 0.60 39.2 17.28 17.46N
150 10 0 -35 16 6 10 19 41 59 327 0.60 39.1 17.21 17.39N
150 20 0 -35 22 4 10 20 9 59 327 0.61 39.1 17.15 17.32N
150 30 0 -35 27 59 10 20 37 59 326 0.61 39.0 17.08 17.26N
150 40 0 -35 33 51 10 21 4 58 326 0.62 38.9 17.01 17.19N
150 50 0 -35 39 40 10 21 31 58 326 0.62 38.9 16.94 17.12N
151 0 0 -35 45 27 10 21 58 58 325 0.63 38.8 16.87 17.05N
Path coordinates are referred to WGS84 (as used by GPS).
1815 is multiple : 4.8 8.8 0.100" 214.0 : 4.6 9.1 174" 137.0 : 4.6 10.4 223" 110.0
Graze Path of component #2 0.19km North, and 0.0 secs. later cf. primary.
Graze Path of component #3 46.84km North, and 497.0 secs. later cf. primary.
Graze Path of component #4 135.71km South, and 609.2 secs. later cf. primary.
Librations Long +5.52 Lat +4.89
P +17.3 D -2.8
Illumination of moon 67%+
Elongation of Moon 110
Vertical Profile Scale 1.96 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.32 deg/min
Limiting Magnitudes for various telescope apertures (in mm)
CA\Tdia 50 100 150 200 250 300 350
13.1 5.8 7.2 8.0 8.6 8.9 9.2 9.4
15.1 5.8 7.2 8.0 8.6 8.9 9.2 9.4
17.1 5.8 7.2 8.1 8.6 9.0 9.2 9.4
19.1 5.8 7.3 8.1 8.6 9.0 9.2 9.5
21.1 5.8 7.3 8.1 8.6 9.0 9.3 9.5
Lunar Limb Profile
