Predictions for Grazing Occultation of S 161834, 2013 Oct 11, near Perth
Graze profile
Grazing Occultation of 161834cB2 Magnitude 7.5 [Red = 0.0]
Date: 2013 Oct 11 11h 16m, to 2013 Oct 11 11h 33m
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 -32 14 48 11 16 0 -8 68 304 0.41 165.8 169.88 8.84S
112 30 0 -32 5 13 11 17 6 -9 67 303 0.41 165.7 169.77 8.94S
113 0 0 -31 55 27 11 18 11 -9 67 301 0.42 165.6 169.67 9.05S
113 30 0 -31 45 32 11 19 17 -10 67 300 0.43 165.4 169.56 9.15S
114 0 0 -31 35 27 11 20 22 -11 66 298 0.44 165.3 169.46 9.25S
114 30 0 -31 25 13 11 21 28 -12 66 297 0.46 165.2 169.36 9.35S
115 0 0 -31 14 48 11 22 33 65 295 0.47 165.1 169.26 9.45S
115 30 0 -31 4 15 11 23 38 64 294 0.48 165.1 169.17 9.55S
116 0 0 -30 53 32 11 24 43 64 293 0.49 165.0 169.08 9.64S
116 30 0 -30 42 39 11 25 49 63 292 0.50 164.9 168.98 9.73S
117 0 0 -30 31 38 11 26 54 63 290 0.51 164.8 168.90 9.82S
117 30 0 -30 20 28 11 27 59 62 289 0.53 164.7 168.81 9.91S
118 0 0 -30 9 9 11 29 3 62 288 0.54 164.6 168.72 9.99S
118 30 0 -29 57 41 11 30 8 61 287 0.55 164.5 168.64 10.07S
119 0 0 -29 46 6 11 31 12 61 286 0.56 164.4 168.56 10.15S
119 30 0 -29 34 22 11 32 16 60 285 0.58 164.4 168.49 10.23S
120 0 0 -29 22 30 11 33 20 59 284 0.59 164.3 168.41 10.30S
Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level.
161834 is double:
Graze prediction is based on the mean position of AB 7.75 9.00 0.40" 153.5
(RST3198) Graze path of A 0.19 km south, and 0.0 secs earlier compared to prediction
Graze path of B 0.60 km north, and 0.2 secs later compared to prediction
AB 7.75 9.00 0.40" 153.5 (RST3198) Graze path of B 0.79 km north, and 0.2 secs later compared to A
Librations Long -0.12 Lat -6.37
P +169.03 D -6.02
Illumination of moon 44%+
Elongation of Moon 83
Vertical Profile Scale 1.95 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.41 deg/min
At longitude 116.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
5.6 5.9 7.4 8.2 8.8 9.2 9.5 9.7
7.6 6.0 7.4 8.3 8.8 9.2 9.5 9.7
9.6 6.0 7.4 8.3 8.8 9.2 9.5 9.7
11.6 6.0 7.5 8.3 8.8 9.2 9.5 9.8
13.6 6.0 7.5 8.3 8.8 9.2 9.5 9.8
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Double star catalogue details
WDS entries
RA Dec Name Y1 Y2 N PA PA Sep Sep M1 M2
18480-1814RST3198 1934 2008 10 161 154 0.4 0.4 7.75 9.00 F2 A2 -003-003 -003-003 -18 5070 D 184758.42-181343.3
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Interferometric catalogue entries
184758.42-181343.3 BD-18 5070 RST3198 HD 173805 HIP 92245 18480-1814
Date PA Sep M1 M2
1983.4203 :154.2 . : 0.416 . . . . . 549 22 3.8 1 Hrt2000a Sc
1984.3815 154.3 . 0.412 . . . . . 549 22 3.8 1 McA1987b Sc
1988.2584 155.4 . 0.404 . . . . . 549 22 3.8 1 McA1989 Sc
1991.25 154. . 0.422 . 7.848 0.005 8.725 0.010 511 222 0.3 1 HIP1997a Hh
1991.25 . . . . 7.88 . 8.77 0.01 505 97 0.3 1 Fab2000a Hh
1991.25 . . . . 9.91 . 8.88 0.02 435 70 0.3 1 Fab2000a Hh
1991.77 150.8 . 0.44 . 7.75 0.01 9.00 0.02 530 100 1.4 1 TYC2002 Ht
1991.77 . . . . 9.58 0.03 8.95 0.02 430 90 1.4 1 TYC2002 Ht
2008.5427 154.0 0.0 0.4484 0.0002 . . : 1.3 . 551 22 4.0 1 Tok2010 S
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Lunar Limb Profile
