Predictions for Grazing Occultation of ZC 847, 2013 Mar 19, near Lismore, NSW
Graze profile
Grazing Occultation of 847cB4 Magnitude 3.0 [Red = 3.1] e
R847 = zeta Tauri
Date: 2013 Mar 19 9h 4m, to 2013 Mar 19 9h 17m
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
149 0 0 -27 58 6 9 4 26 -11 38 339 1.27 7.7 11.15 9.72N
149 30 0 -28 7 33 9 5 35 38 338 1.29 7.9 11.31 9.88N
150 0 0 -28 17 14 9 6 43 37 337 1.31 8.0 11.45 10.02N
150 30 0 -28 27 9 9 7 50 37 337 1.33 8.2 11.60 10.17N
151 0 0 -28 37 18 9 8 57 37 336 1.35 8.3 11.73 10.31N
151 30 0 -28 47 41 9 10 2 36 335 1.37 8.5 11.87 10.44N
152 0 0 -28 58 16 9 11 7 36 334 1.40 8.6 11.99 10.57N
152 30 0 -29 9 3 9 12 10 35 333 1.42 8.7 12.12 10.69N
153 0 0 -29 20 2 9 13 13 35 333 1.44 8.8 12.23 10.81N
153 30 0 -29 31 12 9 14 14 34 332 1.47 8.9 12.35 10.92N
154 0 0 -29 42 34 9 15 15 34 331 1.50 9.0 12.46 11.03N
154 30 0 -29 54 5 9 16 15 33 331 1.52 9.1 12.56 11.13N
155 0 0 -30 5 47 9 17 13 33 330 1.55 9.2 12.66 11.23N
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 -1.20 Lat +3.33
P +11.95 D -3.24
Illumination of moon 47%+
Elongation of Moon 86
Vertical Profile Scale 2.72 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.18 deg/min
At longitude 152.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
6.6 5.7 7.2 8.0 8.5 8.8 9.1 9.3
8.6 5.7 7.2 8.0 8.5 8.9 9.1 9.3
10.6 5.8 7.2 8.0 8.5 8.9 9.1 9.3
12.6 5.8 7.2 8.0 8.5 8.9 9.1 9.3
14.6 5.8 7.2 8.0 8.5 8.9 9.2 9.4
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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
Brisbane 153.1 -27.5 193km 9 13 19
Perth 115.9 -32.0 259km 7 46 13
Pt Macquarie 152.8 -31.4 216km 9 12 52
Lunar Limb Profile
