Predictions for Grazing Occultation of ZC 648, 2015 Aug 8
Graze profile
Grazing Occultation of 648SG8 Magnitude 3.8 [Red = 3.3] s
R648 = Hyadum II = delta 1 Tauri
Date: 2015 Aug 08 16h 49m, to 2015 Aug 08 16h 54m
Nominal site altitude 50m
E. Longit. Latitude U.T. Sun Moon TanZ PA AA CA
o ' " o ' " h m s Alt Alt Az o o o
139 0 0 -33 2 55 16 48 44 0 69 99.00 345.5 355.50 3.55N
139 30 0 -32 53 10 16 48 47 1 69 83.36 345.4 355.44 3.61N
140 0 0 -32 43 19 16 48 49 1 68 49.93 345.4 355.39 3.66N
140 30 0 -32 33 23 16 48 53 2 68 35.58 345.3 355.34 3.71N
141 0 0 -32 23 22 16 48 56 2 68 27.59 345.3 355.29 3.76N
141 30 0 -32 13 17 16 49 0 3 67 22.51 345.2 355.24 3.81N
142 0 0 -32 3 7 16 49 5 3 67 18.99 345.2 355.19 3.86N
142 30 0 -31 52 52 16 49 9 3 67 16.41 345.1 355.14 3.91N
143 0 0 -31 42 32 16 49 15 4 67 14.43 345.1 355.08 3.97N
143 30 0 -31 32 8 16 49 21 4 66 12.87 345.0 355.03 4.02N
144 0 0 -31 21 39 16 49 27 5 66 11.61 345.0 354.98 4.07N
144 30 0 -31 11 6 16 49 34 5 66 10.56 344.9 354.93 4.12N
145 0 0 -31 0 29 16 49 42 6 65 9.68 344.9 354.88 4.17N
145 30 0 -30 49 46 16 49 50 6 65 8.93 344.8 354.82 4.23N
146 0 0 -30 39 0 16 49 58 7 65 8.29 344.8 354.77 4.28N
146 30 0 -30 28 9 16 50 7 7 65 7.72 344.7 354.72 4.33N
147 0 0 -30 17 13 16 50 17 8 64 7.23 344.6 354.67 4.38N
147 30 0 -30 6 13 16 50 27 8 64 6.79 344.6 354.61 4.43N
148 0 0 -29 55 8 16 50 38 9 64 6.40 344.5 354.56 4.49N
148 30 0 -29 43 59 16 50 50 9 64 6.04 344.5 354.51 4.54N
149 0 0 -29 32 45 16 51 2 10 63 5.73 344.4 354.46 4.59N
149 30 0 -29 21 27 16 51 15 10 63 5.44 344.4 354.41 4.64N
150 0 0 -29 10 4 16 51 28 11 63 5.17 344.3 354.36 4.69N
150 30 0 -28 58 37 16 51 42 11 62 4.93 344.3 354.30 4.74N
151 0 0 -28 47 5 16 51 57 12 62 4.71 344.2 354.25 4.80N
151 30 0 -28 35 29 16 52 12 13 62 4.51 344.2 354.20 4.85N
152 0 0 -28 23 49 16 52 28 13 62 4.32 344.1 354.15 4.90N
152 30 0 -28 12 4 16 52 45 14 61 4.14 344.1 354.10 4.95N
153 0 0 -28 0 14 16 53 2 14 61 3.98 344.0 354.05 5.00N
153 30 0 -27 48 21 16 53 20 15 61 3.82 344.0 354.00 5.05N
154 0 0 -27 36 23 16 53 39 15 60 3.68 343.9 353.95 5.10N
154 30 0 -27 24 20 16 53 59 16 60 3.55 343.9 353.90 5.14N
155 0 0 -27 12 13 16 54 19 16 60 3.42 343.8 353.86 5.19N
Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level. The path
is adjusted for the effects of refraction at low moon altitudes.
Projected diameter of star 5 meters [CHARM/CADARS, 13 measures]
648 is variable:
648 = NSV 1582, 3.72 to 3.77, V
648 is quadruple:
Aa,Ac 3.8 12.9 350.0 (OCC 255) Graze path of Ac 0.00 km south, and 0.0 secs later compared to Aa
Aa,Ab 3.8 0.68" 8.2 (CHR 262) Graze path of Ab 1.32 km south, and 0.5 secs later compared to Aa
AB 3.8 12.6 112" 335.7 (BUP 55) Graze path of B 235.32 km south, and 35.4 secs earlier compared to A
C A S S I N I R E G I O N G R A Z E
Librations Long +6.98 Lat +5.61
P +355.33 D -5.97
Illumination of moon 32%-
Elongation of Moon 69
Vertical Profile Scale 2.10 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.80 deg/min
At longitude 147.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
0.4 3.7 5.0 5.6 6.0 6.2 6.4 6.5
2.4 3.8 5.1 5.7 6.1 6.3 6.4 6.5
4.4 3.8 5.2 5.8 6.2 6.4 6.5 6.6
6.4 4.6 6.0 6.7 7.1 7.4 7.6 7.7
8.4 4.7 6.1 6.8 7.2 7.5 7.7 7.8
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
AU Mid 143.0 -30.6 114km 16 49 15
Brisbane 153.1 -27.5 52km 16 53 4
Bundaberg 152.3 -24.8 353km 16 52 39
Pt Macquarie 152.8 -31.4 335km 16 52 56
Lunar Limb Profile
