Predictions for Grazing Occultation of ZC 2401, 2013 Jul 19, near Perth
Graze profile
Grazing Occultation of 2401SF3 Magnitude 5.6 [Red = 5.3]
Date: 2013 Jul 19 13h 30m, to 2013 Jul 19 13h 47m
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
112 0 0 -31 11 54 13 30 13 79 353 0.20 184.6 175.72 5.45S
112 30 0 -31 13 44 13 31 16 79 350 0.20 184.5 175.57 5.60S
113 0 0 -31 15 21 13 32 18 79 346 0.20 184.3 175.42 5.75S
113 30 0 -31 16 47 13 33 21 78 343 0.21 184.2 175.26 5.91S
114 0 0 -31 18 2 13 34 24 78 339 0.21 184.0 175.11 6.06S
114 30 0 -31 19 5 13 35 26 78 336 0.22 183.9 174.96 6.22S
115 0 0 -31 19 57 13 36 29 78 333 0.22 183.7 174.80 6.37S
115 30 0 -31 20 38 13 37 31 77 330 0.23 183.6 174.65 6.52S
116 0 0 -31 21 7 13 38 33 77 327 0.23 183.4 174.49 6.68S
116 30 0 -31 21 24 13 39 35 77 325 0.24 183.3 174.34 6.83S
117 0 0 -31 21 31 13 40 37 76 322 0.25 183.1 174.19 6.98S
117 30 0 -31 21 26 13 41 39 76 320 0.25 183.0 174.04 7.13S
118 0 0 -31 21 10 13 42 40 75 317 0.26 182.8 173.88 7.29S
118 30 0 -31 20 42 13 43 41 75 315 0.27 182.7 173.73 7.44S
119 0 0 -31 20 4 13 44 43 74 313 0.28 182.5 173.58 7.59S
119 30 0 -31 19 14 13 45 43 74 311 0.29 182.4 173.44 7.73S
120 0 0 -31 18 13 13 46 44 73 309 0.30 182.2 173.29 7.88S
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 1 meters [Estimated]
2401 is triple:
This next pair is not confirmed
** 5.6 0.007" 261.0** (OCc1494) Graze path of ? 0.00 km north, and 0.0 secs earlier compared to the primary
AB 5.6 13.6 25.7" 212.6 (KUI 73) Graze path of B 45.10 km north, and 32.1 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 -4.25 Lat -3.29
P +174.73 D -3.43
Illumination of moon 85%+
Elongation of Moon 135
Vertical Profile Scale 1.90 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.36 deg/min
At longitude 116.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
2.7 2.7 4.1 4.9 5.4 5.7 6.0 6.2
4.7 4.7 6.2 7.0 7.5 7.8 8.1 8.3
6.7 4.7 6.2 7.0 7.5 7.9 8.1 8.3
8.7 4.9 6.4 7.2 7.7 8.0 8.3 8.5
10.7 5.6 7.1 7.9 8.4 8.8 9.1 9.3
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Double star catalogue details
WDS entries
RA Dec Name Y1 Y2 N PA PA Sep Sep M1 M2
16419-1955KUI 73 1958 1998 2 214 213 22.5 24.8 5.57 13.6 F4IV-V +031+046 -19 4406 N D 164153.67-195528.1
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Interferometric catalogue entries
164153.67-195528.1 HR 6202 KUI 73 HD 150453 HIP 81754 16419-1955 N
Date PA Sep M1 M2
1985.515 . . < 0.038 . . . . . 549 22 3.6 1 McA1987a Sc
1991.25 . . O . . 5.55 . . . 511 222 0.3 1 HIP1997g Hh
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Bundaberg 152.3 -24.8 21km 14 41 9
Perth 115.9 -32.0 67km 13 38 15
Rockhampton 150.5 -23.4 192km 14 38 54
Lunar Limb Profile
