Predictions for Grazing Occultation of ZC 1428, 2014 Jan 18
Graze profile
Grazing Occultation of 1428SA5 Magnitude 3.5 [Red = 3.3]
R1428 = omicron Leonis
Date: 2014 Jan 18 14h 38m, to 2014 Jan 18 15h 3m
Nominal site altitude 100m
E. Longit. Latitude U.T. Sun Moon TanZ PA AA CA
o ' " o ' " h m s Alt Alt Az o o o
167 0 0 -40 7 31 14 38 10 40 1 1.18 26.8 7.05 0.53N
167 30 0 -40 25 38 14 39 24 40 0 1.19 26.8 7.06 0.52N
168 0 0 -40 43 43 14 40 37 40 359 1.21 26.8 7.06 0.51N
168 30 0 -41 1 48 14 41 50 39 358 1.22 26.8 7.06 0.51N
169 0 0 -41 19 52 14 43 1 39 357 1.24 26.8 7.05 0.52N
169 30 0 -41 37 53 14 44 11 39 356 1.25 26.8 7.05 0.53N
170 0 0 -41 55 52 14 45 21 38 355 1.27 26.8 7.03 0.54N
170 30 0 -42 13 47 14 46 29 38 354 1.28 26.7 7.02 0.56N
171 0 0 -42 31 40 14 47 37 38 353 1.30 26.7 7.00 0.58N
171 30 0 -42 49 28 14 48 43 37 352 1.32 26.7 6.97 0.60N
172 0 0 -43 7 12 14 49 49 37 351 1.33 26.7 6.95 0.63N
172 30 0 -43 24 51 14 50 53 36 351 1.35 26.6 6.92 0.66N
173 0 0 -43 42 25 14 51 56 36 350 1.37 26.6 6.89 0.69N
173 30 0 -43 59 53 14 52 58 36 349 1.39 26.6 6.85 0.72N
174 0 0 -44 17 16 14 54 0 35 348 1.41 26.5 6.82 0.76N
174 30 0 -44 34 33 14 55 0 35 347 1.43 26.5 6.78 0.80N
175 0 0 -44 51 43 14 55 59 35 346 1.45 26.5 6.74 0.84N
175 30 0 -45 8 47 14 56 57 34 345 1.48 26.4 6.69 0.89N
176 0 0 -45 25 44 14 57 53 34 345 1.50 26.4 6.65 0.93N
176 30 0 -45 42 33 14 58 49 33 344 1.52 26.3 6.60 0.98N
177 0 0 -45 59 16 14 59 44 33 343 1.55 26.3 6.55 1.03N
177 30 0 -46 15 50 15 0 37 32 342 1.57 26.2 6.50 1.08N
178 0 0 -46 32 18 15 1 30 32 341 1.60 26.2 6.45 1.13N
178 30 0 -46 48 37 15 2 21 32 341 1.62 26.1 6.39 1.19N
179 0 0 -47 4 48 15 3 12 31 340 1.65 26.1 6.34 1.24N
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 [CHARM/CADARS, 4 measures]
1428 is quadruple:
Aa,Ab 3.5 0.004" 192.3 (HMM 1) Graze path of Ab 0.01 km north, and 0.0 secs later compared to Aa
Aa,Ac 3.5 0.60" 268.0 (ARI 1) Graze path of Ac 0.74 km north, and 1.5 secs earlier compared to Aa
AB 3.6 10.8 97" 47.1 (H 6 76) Graze path of B 235.32 km south, and 100.0 secs later compared to A
C A S S I N I R E G I O N G R A Z E
Librations Long -3.51 Lat +5.43
P +6.59 D -5.56
Illumination of moon 95%-
Elongation of Moon 154
Vertical Profile Scale 2.72 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.32 deg/min
At longitude 173.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
-3.3 2.3 3.7 4.4 4.9 5.2 5.4 5.5
-1.3 2.3 3.7 4.4 4.9 5.2 5.4 5.5
0.7 2.3 3.7 4.4 4.9 5.2 5.4 5.5
2.7 2.3 3.7 4.4 4.9 5.2 5.4 5.5
4.7 2.3 3.7 4.4 4.9 5.2 5.4 5.5
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Double star catalogue details
WDS entries
RA Dec Name Y1 Y2 N PA PA Sep Sep M1 M2
09412+0954HMM 1Aa,Ab 1990 2010 25 90 355 0.0 0.0 3.52 A5V F6II -142-037 +10 2044 NO 094109.12+095332.6
09412+0954ARI 1Aa,Ac 1997 1997 1 268 268 0.6 0.6 3.52 A5V F6II -142-037 +10 2044 NX 094109.12+095332.6
09412+0954H 6 76AB 1783 2011 26 40 47 63.5 96.8 3.56 10.83 -142-038 -008-005 NL 094109.12+095332.6
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Chch graze 172.6 -43.5 3km 14 51 10
Dunedin 170.5 -45.9 308km 14 46 29
MidNZ 173.0 -41.0 238km 14 51 56
Wellington 174.8 -41.3 305km 14 55 35
Lunar Limb Profile
