Predictions for Grazing Occultation of ZC 1549, 2009 Apr 6
Grazing Occultation of 1549cG8 Magnitude 5.1 [Red = 4.6]
R1549 = 48 Leonis
Date: 2009 Apr 06 12h 58m, to 2009 Apr 06 13h 38m
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
135 0 0 -30 54 45 12 59 38 52 350 0.78 40.6 20.14 21.43N
135 30 0 -31 21 22 13 1 3 51 349 0.80 40.5 20.05 21.34N
136 0 0 -31 47 42 13 2 27 51 348 0.82 40.4 19.96 21.25N
136 30 0 -32 13 45 13 3 49 50 347 0.83 40.3 19.86 21.15N
137 0 0 -32 39 30 13 5 10 50 345 0.85 40.2 19.76 21.05N
137 30 0 -33 4 57 13 6 30 49 344 0.87 40.1 19.66 20.95N
138 0 0 -33 30 6 13 7 47 48 343 0.89 40.0 19.55 20.84N
138 30 0 -33 54 56 13 9 4 48 342 0.91 39.9 19.44 20.73N
139 0 0 -34 19 27 13 10 18 47 341 0.93 39.8 19.32 20.62N
139 30 0 -34 43 39 13 11 32 47 340 0.94 39.7 19.21 20.50N
140 0 0 -35 7 32 13 12 43 46 339 0.96 39.6 19.09 20.39N
140 30 0 -35 31 6 13 13 54 45 338 0.99 39.4 18.97 20.27N
141 0 0 -35 54 20 13 15 2 45 337 1.01 39.3 18.85 20.14N
141 30 0 -36 17 15 13 16 10 44 337 1.03 39.2 18.73 20.02N
142 0 0 -36 39 51 13 17 15 44 336 1.05 39.1 18.60 19.90N
142 30 0 -37 2 7 13 18 20 43 335 1.07 38.9 18.48 19.77N
143 0 0 -37 24 4 13 19 23 42 334 1.09 38.8 18.35 19.65N
143 30 0 -37 45 42 13 20 24 42 333 1.12 38.7 18.22 19.52N
144 0 0 -38 7 1 13 21 25 41 332 1.14 38.6 18.10 19.39N
144 30 0 -38 28 1 13 22 23 41 332 1.16 38.4 17.97 19.26N
145 0 0 -38 48 42 13 23 21 40 331 1.19 38.3 17.84 19.14N
145 30 0 -39 9 4 13 24 17 40 330 1.21 38.2 17.71 19.01N
146 0 0 -39 29 8 13 25 12 39 329 1.24 38.0 17.58 18.88N
146 30 0 -39 48 54 13 26 6 38 329 1.26 37.9 17.45 18.75N
147 0 0 -40 8 21 13 26 58 38 328 1.29 37.8 17.32 18.62N
147 30 0 -40 27 31 13 27 49 37 327 1.32 37.7 17.19 18.49N
148 0 0 -40 46 23 13 28 39 37 327 1.34 37.5 17.06 18.36N
148 30 0 -41 4 58 13 29 28 36 326 1.37 37.4 16.94 18.23N
149 0 0 -41 23 15 13 30 15 36 325 1.40 37.3 16.81 18.10N
149 30 0 -41 41 16 13 31 2 35 325 1.43 37.1 16.68 17.98N
150 0 0 -41 58 59 13 31 47 35 324 1.45 37.0 16.55 17.85N
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
1549 is double:
AB 6.0 6.0 0.10" 90.0 Graze path of B 0.14 km south, and 0.2 secs later compared to A
Librations Long +2.90 Lat +2.92
P +18.09 D -1.62
Illumination of moon 89%+
Elongation of Moon 141
Vertical Profile Scale 2.15 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.52 deg/min
At longitude 144.50:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
15.3 5.4 6.9 7.6 8.1 8.5 8.7 8.9
17.3 5.4 6.9 7.7 8.1 8.5 8.7 8.9
19.3 5.4 6.9 7.7 8.2 8.5 8.7 8.9
21.3 5.5 6.9 7.7 8.2 8.5 8.7 8.9
23.3 5.5 6.9 7.7 8.2 8.5 8.7 8.9
Lunar Limb Profile - Adelaide
Lunar Limb Profile - Melbourne
