Predictions for Grazing Occultation of SAO 186461, 2007 Feb 13
Grazing Occultation of 186461 cA2 Magnitude 7.4v
Date 2007 February 13 (Tuesday) 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
172 0 0 -40 25 13 15 41 23 23 108 2.35 186.8 187.91 11.72S
172 10 0 -40 31 4 15 41 32 23 108 2.33 186.8 187.90 11.71S
172 20 0 -40 36 54 15 41 41 23 108 2.31 186.8 187.89 11.70S
172 30 0 -40 42 43 15 41 49 24 108 2.29 186.8 187.88 11.69S
172 40 0 -40 48 32 15 41 58 24 108 2.27 186.8 187.87 11.68S
172 50 0 -40 54 21 15 42 7 24 107 2.25 186.7 187.86 11.67S
173 0 0 -41 0 9 15 42 16 24 107 2.24 186.7 187.85 11.66S
173 10 0 -41 5 56 15 42 25 24 107 2.22 186.7 187.84 11.65S
173 20 0 -41 11 43 15 42 34 24 107 2.20 186.7 187.82 11.64S
173 30 0 -41 17 29 15 42 43 25 107 2.18 186.7 187.81 11.62S
173 40 0 -41 23 15 15 42 53 25 107 2.16 186.7 187.80 11.61S
173 50 0 -41 29 0 15 43 2 25 107 2.15 186.7 187.79 11.60S
174 0 0 -41 34 45 15 43 11 25 106 2.13 186.7 187.78 11.59S
174 10 0 -41 40 29 15 43 20 25 106 2.11 186.6 187.76 11.58S
174 20 0 -41 46 12 15 43 30 25 106 2.10 186.6 187.75 11.56S
Path coordinates are referred to WGS84 (as used by GPS).
186461 is double : 8.2 8.2 0.050" 0.0
Graze Path of component #2 0.11km South, and 0.0 secs. earlier cf. primary.
186461 = V4385 Sgr, 7.42 to 7.46 Hp, Type ELL:
Librations Long -6.04 Lat +6.05
P +187.1 D +7.1
Illumination of moon 19%-
Elongation of Moon 52
Vertical Profile Scale 2.14 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.91 deg/min
Limiting Magnitudes for various telescope apertures (in mm)
CA\Tdia 50 100 150 200 250 300 350
7.6 6.0 7.5 8.3 8.8 9.2 9.5 9.7
9.6 6.1 7.5 8.4 8.9 9.3 9.6 9.8
11.6 6.1 7.6 8.4 9.0 9.3 9.6 9.9
13.6 6.2 7.7 8.5 9.0 9.4 9.7 9.9
15.6 6.2 7.7 8.5 9.1 9.5 9.7 10.0
Lunar Limb Profile
