Predictions for Grazing Occultation of ZC 2322, 2013 Jun 21 near Rockhampton
Graze profile
Grazing Occultation of 2322SB2 Magnitude 4.1 [Red = 4.1]
R2322 = jabbah = nu Scorpii
Date: 2013 Jun 21 17h 46m, to 2013 Jun 21 17h 48m
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 -23 21 18 17 45 56 14 255 3.93 177.9 166.11 16.37S
149 30 0 -23 10 35 17 46 10 14 254 4.09 177.9 166.10 16.39S
150 0 0 -22 59 51 17 46 22 13 254 4.27 177.9 166.09 16.40S
150 30 0 -22 49 6 17 46 35 13 254 4.45 177.9 166.08 16.41S
151 0 0 -22 38 20 17 46 47 12 254 4.66 177.9 166.07 16.42S
151 30 0 -22 27 33 17 46 58 12 254 4.88 177.9 166.06 16.42S
152 0 0 -22 16 46 17 47 9 11 253 5.12 177.9 166.05 16.43S
152 30 0 -22 5 58 17 47 20 11 253 5.39 177.8 166.05 16.44S
153 0 0 -21 55 9 17 47 29 10 253 5.68 177.8 166.04 16.45S
153 30 0 -21 44 19 17 47 39 9 253 6.01 177.8 166.03 16.45S
154 0 0 -21 33 29 17 47 48 9 252 6.37 177.8 166.03 16.45S
154 30 0 -21 22 39 17 47 56 8 252 6.78 177.8 166.03 16.46S
155 0 0 -21 11 48 17 48 4 8 252 7.24 177.8 166.02 16.46S
Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level.
2322 is quadruple:
Aa,Ab 4.0 162.3 (CHR 146) Graze path of Ab 0.04 km north, and 0.0 secs later compared to Aa
AB 4.3 5.3 1.3" 1.0 (BU 120) Graze path of B 2.71 km south, and 0.1 secs later compared to A
AC 4.3 6.6 41" 337.0 (H 5 6) Graze path of C 78.90 km south, and 24.3 secs earlier compared to A
Librations Long -4.64 Lat -2.44
P +166.25 D -3.22
Illumination of moon 95%+
Elongation of Moon 154
Vertical Profile Scale 1.92 km/arcsec at mean distance of moon
Horizontal Scale Factor 2.09 deg/min
At longitude 152.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
12.4 3.5 4.8 5.4 5.7 5.9 6.0 6.1
14.4 3.6 4.8 5.4 5.7 5.9 6.0 6.1
16.4 3.8 5.0 5.6 5.9 6.1 6.2 6.3
18.4 4.0 5.3 5.9 6.3 6.5 6.6 6.7
20.4 4.3 5.6 6.2 6.6 6.8 6.9 7.0
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Double star catalogue details
WDS entries
RA Dec Name Y1 Y2 N PA PA Sep Sep M1 M2
16120-1928CHR 146Aa,Ab 1988 2012 6 172 346 0.1 0.1 4.01 B3V -010-026 -19 4333 N 161159.74-192738.3
16120-1928BU 120AB 1873 2012 100 0 1 0.3 1.4 4.35 5.31 -008-000 N D 161159.74-192738.3
16120-1928H 5 6AC 1777 2010 72 335 337 42.0 41.2 4.35 6.60 -011-016 -021-035 -19 4332 N D 161159.74-192738.3
16120-1928MTL 2CD 1846 2011 93 39 55 1.1 2.2 6.60 7.23 B8/9V -021-035 -021-035 -19 4332 N 161158.60-192700.1
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Albany 117.8 -35.0 259km 17 15 2
Bundaberg 152.3 -24.8 272km 17 47 16
Perth 115.9 -32.0 111km 17 12 5
Rockhampton 150.5 -23.4 57km 17 46 35
Lunar Limb Profile
