Predictions for Grazing Occultation of ZC 648, 2016 Nov 15
Graze profile
Grazing Occultation of 648SG8 Magnitude 3.8 [Red = 3.3] s
R648 = Hyadum II = delta 1 Tauri
Date: 2016 Nov 15 11h 49m, to 2016 Nov 15 12h 8m
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 31 54.4 11 48 30 27 29 1.97 343.9 353.29 23.78N
167 30 0 -40 17 42.3 11 49 9 27 28 1.93 343.9 353.30 23.77N
168 0 0 -40 3 31.1 11 49 49 28 28 1.90 343.9 353.31 23.76N
168 30 0 -39 49 21.0 11 50 30 28 27 1.86 343.9 353.32 23.75N
169 0 0 -39 35 12.5 11 51 12 29 26 1.83 344.0 353.33 23.74N
169 30 0 -39 21 5.7 11 51 54 29 26 1.79 344.0 353.34 23.73N
170 0 0 -39 7 0.9 11 52 38 30 25 1.76 344.0 353.36 23.71N
170 30 0 -38 52 58.5 11 53 22 30 25 1.73 344.0 353.38 23.69N
171 0 0 -38 38 58.7 11 54 7 30 24 1.70 344.0 353.40 23.67N
171 30 0 -38 25 1.8 11 54 53 31 23 1.67 344.1 353.43 23.65N
172 0 0 -38 11 8.2 11 55 39 31 23 1.64 344.1 353.45 23.62N
172 30 0 -37 57 18.2 11 56 27 32 22 1.62 344.1 353.48 23.59N
173 0 0 -37 43 32.1 11 57 15 32 21 1.59 344.1 353.52 23.56N
173 30 0 -37 29 50.2 11 58 4 33 20 1.57 344.2 353.55 23.53N
174 0 0 -37 16 13.0 11 58 53 33 20 1.54 344.2 353.59 23.49N
174 30 0 -37 2 40.8 11 59 44 33 19 1.52 344.3 353.63 23.45N
175 0 0 -36 49 13.9 12 0 35 34 18 1.50 344.3 353.67 23.41N
175 30 0 -36 35 52.8 12 1 27 34 17 1.47 344.3 353.72 23.37N
176 0 0 -36 22 37.7 12 2 20 35 17 1.45 344.4 353.77 23.32N
176 30 0 -36 9 29.2 12 3 13 35 16 1.43 344.4 353.82 23.27N
177 0 0 -35 56 27.4 12 4 7 35 15 1.41 344.5 353.87 23.21N
177 30 0 -35 43 32.9 12 5 2 36 14 1.40 344.6 353.93 23.16N
178 0 0 -35 30 46.0 12 5 58 36 14 1.38 344.6 353.99 23.10N
178 30 0 -35 18 7.1 12 6 54 36 13 1.36 344.7 354.06 23.03N
179 0 0 -35 5 36.5 12 7 51 37 12 1.34 344.8 354.12 22.97N
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 8 meters [CHARM/CADARS, 13 measures]
648 is variable:
648 = NSV 1582, 3.72 to 3.77, V
648 is quadruple:
Aa,Ab 3.8 12.9 350.0 (CHR 262) Graze path of Ab approximately 0.0 km south, and 0.0 secs later compared to Aa
- refer to graze profile for exact distances
Aa,Ab 3.9 9.5 0.70" 8.9 (CHR 262) Graze path of Ab approximately 1.9 km south, and 0.7 secs later compared to Aa
- refer to graze profile for exact distances
AB 3.8 13.2 112" 335.6 (BUP 55) Graze path of B approximately 339.0 km south, and 37.7 secs earlier compared to A
- refer to graze profile for exact distances
C A S S I N I R E G I O N G R A Z E
Librations Long +2.72 Lat +5.78
P +353.75 D -5.79
Illumination of moon 98%-
Elongation of Moon 166
Vertical Profile Scale approx. 2.84 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.52 deg/min
At longitude 173.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
19.6 4.2 5.6 6.4 6.8 7.1 7.3 7.5
21.6 4.2 5.7 6.4 6.8 7.1 7.3 7.5
23.6 4.2 5.7 6.4 6.8 7.1 7.3 7.5
25.6 4.3 5.7 6.4 6.9 7.1 7.3 7.5
27.6 4.3 5.7 6.4 6.9 7.2 7.4 7.5
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AAVSO Variable star entry
Variable identifier Type Max Min Ph Epoch Period
NSV 1582 3.72 3.77 V
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Auckland 174.8 -36.9 1km 12 0 14.5
MidNZ 173.0 -41.0 311km 11 57 14.7
Lunar Limb Profile
