Predictions for Grazing Occultation of ZC 2876, 2013 Oct 12, near Brisbane
Graze profile Brisbane
Grazing Occultation of 2876SK1 Magnitude 5.3 [Red = 4.7] s
R2876 = 54 Sagittarii
Date: 2013 Oct 12 7h 51m, to 2013 Oct 12 8h 40m
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
146 30 0 -29 11 44 8 19 20 0 77 13 0.23 162.7 172.12 7.99S
147 0 0 -29 3 40 8 20 30 -1 77 10 0.23 162.5 171.98 8.14S
147 30 0 -28 55 23 8 21 40 -2 77 6 0.22 162.4 171.83 8.29S
148 0 0 -28 46 54 8 22 50 -3 78 3 0.22 162.2 171.68 8.44S
148 30 0 -28 38 13 8 24 1 -3 78 359 0.22 162.1 171.53 8.58S
149 0 0 -28 29 18 8 25 12 -4 78 355 0.21 161.9 171.39 8.73S
149 30 0 -28 20 12 8 26 24 -5 78 352 0.21 161.8 171.24 8.87S
150 0 0 -28 10 52 8 27 36 -5 78 348 0.21 161.6 171.10 9.02S
150 30 0 -28 1 21 8 28 48 -6 78 344 0.21 161.5 170.96 9.16S
151 0 0 -27 51 37 8 30 1 -7 78 340 0.21 161.4 170.82 9.30S
151 30 0 -27 41 40 8 31 14 -8 78 337 0.22 161.2 170.68 9.44S
152 0 0 -27 31 32 8 32 28 -8 78 333 0.22 161.1 170.54 9.57S
152 30 0 -27 21 11 8 33 41 -9 77 329 0.22 160.9 170.41 9.71S
153 0 0 -27 10 38 8 34 55 -10 77 326 0.23 160.8 170.28 9.84S
153 30 0 -26 59 53 8 36 10 -11 77 322 0.23 160.7 170.15 9.97S
154 0 0 -26 48 56 8 37 24 -11 77 319 0.24 160.6 170.02 10.10S
154 30 0 -26 37 47 8 38 39 76 316 0.24 160.4 169.89 10.22S
155 0 0 -26 26 26 8 39 54 76 313 0.25 160.3 169.77 10.35S
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 3 meters [Estimated]
2876 is variable:
2876 = NSV 12275, 5.28 to 5.36, V
2876 is triple:
AC 5.4 7.7 45" 42.0 (HJ 599) Graze path of C 46.79 km south, and 104.8 secs later compared to A
AB 5.4 12.6 71" 273.0 (HJ 599) Graze path of B 46.91 km south, and 180.1 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 +1.28 Lat -6.81
P +172.69 D -6.34
Illumination of moon 55%+
Elongation of Moon 95
Vertical Profile Scale 1.91 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.31 deg/min
At longitude 144.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
3.2 3.1 4.6 5.4 5.9 6.2 6.4 6.6
5.2 3.5 5.0 5.7 6.2 6.6 6.8 7.0
7.2 3.5 5.0 5.7 6.2 6.6 6.8 7.0
9.2 3.5 5.0 5.7 6.2 6.6 6.8 7.0
11.2 3.5 5.0 5.7 6.2 6.6 6.8 7.0
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Double star catalogue details
WDS entries
RA Dec Name Y1 Y2 N PA PA Sep Sep M1 M2
19407-1618HJ 599AB 1828 2009 7 273 279 15.0 45.2 5.42 12.6 K2III F8V +071-048 -16 5399 N 194043.34-161735.3
19407-1618HJ 599AC 1827 2010 33 40 42 40.0 45.3 5.42 7.65 +069-051 +077-054 -16 5400 N D 194043.34-161735.3
19407-1618ANT 6AD 2009 2009 1 252 252 56.8 56.8 5.42 13.9 +069-051 -026-010 194043.34-161735.3
19409-1619BU 1287 1899 1936 4 144 143 1.1 1.2 10.8 11.5 !194054. -1619
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Interferometric catalogue entries
194043.34-161735.3 ADS 12767 HJ 599A HD 185644 HIP 96808 19407-1618 N
Date PA Sep M1 M2
1980.723 . . < 0.030 . . . . . 470 3.8 1 Hrt1984 Sc
1985.521 . . < 0.038 . . . . . 549 22 3.6 1 McA1987a Sc
1991.25 . . < 0.1 . 5.46 . . . 511 222 0.3 1 HIP1997e Hh
194043.34-161735.3 ADS 12767 HJ 599AC HD 185644 HIP 96808 19407-1618 N
Date PA Sep M1 M2
1991.62 42.0 . 45.643 . 5.421 0.009 7.649 0.012 530 100 1.4 1 TYC2000b Ht
1991.62 . . . . 6.731 0.015 8.472 0.017 430 90 1.4 1 TYC2000b Ht
2003.628 41.5 . 44.72 . . . . . 550 0.7 1 WSI2004b Su
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AAVSO Variable star entry
Variable identifier Type Max Min Ph Epoch Period
NSV 12275 5.28 5.36 V
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Brisbane 153.1 -27.5 32km 8 35 3
Bundaberg 152.3 -24.8 270km 8 33 17
Lunar Limb Profile - near Brisbane
