Predictions for Grazing Occultation of ZC 847, 2013 Mar 19
Graze profile
Grazing Occultation of 847cB4 Magnitude 3.0 [Red = 3.1] e
R847 = zeta Tauri
Date: 2013 Mar 19 9h 41m, to 2013 Mar 19 9h 43m
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
174 0 0 -38 31 49 9 41 28 13 311 4.27 10.4 13.86 12.43N
174 10 0 -38 36 25 9 41 35 13 311 4.33 10.4 13.86 12.43N
174 20 0 -38 41 0 9 41 41 13 311 4.39 10.4 13.85 12.42N
174 30 0 -38 45 34 9 41 48 13 311 4.45 10.4 13.85 12.42N
174 40 0 -38 50 9 9 41 54 13 311 4.51 10.4 13.84 12.41N
174 50 1 -38 54 44 9 42 1 12 310 4.57 10.4 13.84 12.41N
175 0 1 -38 59 18 9 42 7 12 310 4.63 10.4 13.83 12.40N
175 10 1 -39 3 52 9 42 13 12 310 4.70 10.4 13.83 12.40N
175 20 1 -39 8 26 9 42 19 12 310 4.76 10.4 13.82 12.39N
175 30 1 -39 13 0 9 42 25 12 310 4.83 10.4 13.82 12.39N
175 40 1 -39 17 34 9 42 31 12 310 4.90 10.4 13.81 12.38N
175 50 1 -39 22 8 9 42 36 11 310 4.97 10.4 13.80 12.37N
176 0 1 -39 26 41 9 42 42 11 310 5.05 10.4 13.80 12.37N
176 10 2 -39 31 15 9 42 48 11 309 5.12 10.4 13.79 12.36N
176 20 2 -39 35 48 9 42 53 11 309 5.20 10.4 13.79 12.36N
176 30 2 -39 40 21 9 42 58 11 309 5.28 10.4 13.78 12.35N
176 40 2 -39 44 53 9 43 4 11 309 5.36 10.4 13.77 12.34N
176 50 2 -39 49 26 9 43 9 10 309 5.45 10.3 13.77 12.34N
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 4 meters [CHARM/CADARS, 8 measures]
847 is variable:
847 = zet Tau, 2.80 to 3.17, V, Type E/GS+GCAS, Period 132.9735 days, Phase 99 %
847 is double:
This next pair is not confirmed
** 3.2 5.2 0.007" 350.0** (OCc1268) Graze path of ? 0.02 km south, and 0.0 secs earlier compared to the primary
Librations Long -1.49 Lat +3.33
P +13.75 D -3.33
Illumination of moon 46%+
Elongation of Moon 86
Vertical Profile Scale 2.72 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.51 deg/min
At longitude 175.50:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
8.4 4.8 6.2 6.9 7.3 7.5 7.7 7.8
10.4 4.8 6.2 6.9 7.3 7.6 7.7 7.9
12.4 4.9 6.2 6.9 7.3 7.6 7.8 7.9
14.4 4.9 6.2 6.9 7.4 7.6 7.8 7.9
16.4 4.9 6.3 7.0 7.4 7.6 7.8 7.9
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Double star catalogue details
Interferometric catalogue entries
053738.68+210833.3 HR 1910 zet Tau HD 37202 HIP 26451 05376+2109
Date PA Sep M1 M2
1921.300 . . < 0.030 . . . . . 550 1.6 1 Mrr1922 Jm
1988.9097 . . < 0.077 . . . . . 549 22 1.8 2 Msn1997c Sc
1991.25 . . V . . 2.97 . . . 511 0.3 1 HIP1997g Hh
1991.9050 . . < 0.036 . . . . . 549 22 3.8 1 Msn1997c Sc
1996.8717 . . < 0.055 . . . . . 549 22 2.5 1 Msn1997c Sc
1997.1255 . . < 0.055 . . . . . 549 22 2.5 1 Msn1997c Sc
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AAVSO Variable star entry
Variable identifier Type Max Min Ph Epoch Period
zet Tau E/GS+GCAS 2.80 3.17 V 2444936.7810 132.9735
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Auckland 174.8 -36.9 193km 9 41 59
MidNZ 173.0 -41.0 278km 9 40 46
Wellington 174.8 -41.3 228km 9 41 59
Lunar Limb Profile
