Predictions for Grazing Occultation of ZC 691, 2013 Aug 28 near Port Macquarie
Graze profile Pt Macquarie
Grazing Occultation of 691cG5 Magnitude 6.3 [Red = 5.9]
Date: 2013 Aug 28 18h 53m, to 2013 Aug 28 19h 44m
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
145 0 0 -33 26 17 19 15 21 34 21 1.48 170.1 179.61 -1.56S
145 30 0 -33 15 39 19 16 35 34 20 1.46 170.2 179.72 -1.44S
146 0 0 -33 5 14 19 17 51 35 19 1.43 170.4 179.85 -1.32S
146 30 0 -32 55 2 19 19 8 35 18 1.41 170.5 179.98 -1.19S
147 0 0 -32 45 4 19 20 27 36 17 1.40 170.6 180.11 -1.05S
147 30 0 -32 35 21 19 21 47 36 16 1.38 170.8 180.25 -0.92S
148 0 0 -32 25 52 19 23 8 36 15 1.36 170.9 180.39 -0.77S
148 30 0 -32 16 39 19 24 30 37 15 1.34 171.1 180.54 -0.62S
149 0 0 -32 7 42 19 25 54 37 14 1.33 171.2 180.70 -0.47S
149 30 0 -31 59 2 19 27 19 37 13 1.31 171.4 180.86 -0.31S
150 0 0 -31 50 38 19 28 45 -12 38 12 1.30 171.5 181.02 -0.14S
150 30 0 -31 42 33 19 30 13 -11 38 11 1.29 171.7 181.19 0.02S
151 0 0 -31 34 45 19 31 41 -10 38 10 1.27 171.9 181.36 0.20S
151 30 0 -31 27 16 19 33 10 -10 38 9 1.26 172.1 181.54 0.38S
152 0 0 -31 20 6 19 34 41 -9 39 8 1.25 172.2 181.72 0.56S
152 30 0 -31 13 15 19 36 12 -8 39 7 1.24 172.4 181.91 0.74S
153 0 0 -31 6 45 19 37 44 -7 39 5 1.24 172.6 182.10 0.94S
153 30 0 -31 0 35 19 39 16 -6 39 4 1.23 172.8 182.30 1.13S
154 0 0 -30 54 45 19 40 50 -6 39 3 1.22 173.0 182.49 1.33S
154 30 0 -30 49 17 19 42 24 -5 39 2 1.22 173.2 182.69 1.53S
155 0 0 -30 44 10 19 43 58 -4 40 1 1.21 173.4 182.90 1.73S
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 2 meters [Estimated]
691 is double:
AB 6.4 0.057" 121.6 (L 4) Graze path of B 0.11 km north, and 0.1 secs later compared to A
Librations Long +4.21 Lat +2.63
P +179.60 D +2.93
Illumination of moon 46%-
Elongation of Moon 85
Vertical Profile Scale 2.91 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.22 deg/min
At longitude 144.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
-5.8 3.1 4.5 5.2 5.6 5.9 6.1 6.2
-3.8 3.1 4.5 5.2 5.6 5.9 6.1 6.2
-1.8 3.1 4.5 5.2 5.6 5.9 6.1 6.2
0.2 4.9 6.3 7.1 7.5 7.9 8.1 8.3
2.2 4.9 6.3 7.1 7.6 7.9 8.1 8.3
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Double star catalogue details
WDS entries
RA Dec Name Y1 Y2 N PA PA Sep Sep M1 M2
04357+1953L 4 1902 1994 2 192 134 0.3 0.1 6.36 G5II- -021-018 +19 742 N 043542.57+195254.6
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Interferometric catalogue entries
043542.57+195254.6 ADS 3316 L 4 HD 29104 HIP 21408 04357+1953 N
Date PA Sep M1 M2
1983.9283 . . < 0.06 . . . . . 550 3 2.0 1 Bnu1984 S
1991.25 . . < 0.1 . 6.48 . . . 511 222 0.3 1 HIP1997e Hh
1994.720 134. 3.5 0.065 0.002 . . . . 644 70 2.0 1 Pru2002b S
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Newcastle 151.7 -33.0 166km 19 33 49
Pt Macquarie 152.8 -31.4 27km 19 37 13
Sydney 151.1 -33.8 242km 19 31 53
Lunar Limb Profile - near Port Mcquarie
