Predictions for Grazing Occultation of ZC2876, 2015 Sep 23
Graze profile
Grazing Occultation of 2876SK1 Magnitude 5.3 [Red = 4.7]
R2876 = 54 Sagittarii
Date: 2015 Sep 23 7h 56m, to 2015 Sep 23 8h 17m
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
167 0 0 -45 1 48 7 55 55 61 15 0.56 169.7 180.15 2.89S
167 30 0 -44 58 18 7 56 46 61 14 0.56 169.6 180.05 3.00S
168 0 0 -44 54 40 7 57 36 61 12 0.55 169.5 179.95 3.10S
168 30 0 -44 50 53 7 58 27 61 11 0.55 169.4 179.84 3.20S
169 0 0 -44 46 58 7 59 18 61 10 0.55 169.3 179.74 3.30S
169 30 0 -44 42 55 8 0 9 62 8 0.54 169.2 179.64 3.40S
170 0 0 -44 38 43 8 1 1 62 7 0.54 169.1 179.55 3.49S
170 30 0 -44 34 23 8 1 52 62 5 0.54 169.0 179.45 3.59S
171 0 0 -44 29 55 8 2 44 62 4 0.53 168.9 179.35 3.69S
171 30 0 -44 25 18 8 3 37 62 2 0.53 168.8 179.25 3.79S
172 0 0 -44 20 32 8 4 29 62 1 0.53 168.7 179.15 3.89S
172 30 0 -44 15 38 8 5 22 62 359 0.53 168.6 179.05 3.99S
173 0 0 -44 10 35 8 6 15 62 358 0.53 168.5 178.95 4.09S
173 30 0 -44 5 23 8 7 8 62 356 0.52 168.4 178.85 4.19S
174 0 0 -44 0 3 8 8 1 62 355 0.52 168.3 178.75 4.29S
174 30 0 -43 54 34 8 8 55 62 353 0.52 168.2 178.65 4.39S
175 0 0 -43 48 57 8 9 49 62 352 0.52 168.1 178.55 4.49S
175 30 0 -43 43 11 8 10 43 62 350 0.52 168.0 178.46 4.59S
176 0 0 -43 37 16 8 11 37 62 349 0.52 167.9 178.36 4.68S
176 30 0 -43 31 12 8 12 32 62 347 0.52 167.8 178.26 4.78S
177 0 0 -43 25 0 8 13 27 62 346 0.52 167.7 178.16 4.88S
177 30 0 -43 18 39 8 14 22 62 344 0.52 167.6 178.07 4.97S
178 0 0 -43 12 9 8 15 17 62 343 0.52 167.5 177.97 5.07S
178 30 0 -43 5 30 8 16 12 62 341 0.53 167.4 177.88 5.16S
179 0 0 -42 58 42 8 17 8 62 340 0.53 167.3 177.78 5.26S
Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level. The path
is adjusted for the effects of refraction at low moon altitudes.
Projected diameter of star 4 meters [Estimated]
2876 is quadruple:
AC 5.4 7.7 45" 42.0 (HJ 599) Graze path of C 58.28 km south, and 92.7 secs later compared to A
AB 5.4 12.6 46" 279.2 (HJ 599) Graze path of B 35.47 km south, and 110.0 secs earlier compared to A
AD 5.4 13.9 57" 252.7 (ANT 6) Graze path of D 12.51 km north, and 144.6 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 -6.92 Lat -6.73
P +179.73 D -6.59
Illumination of moon 71%+
Elongation of Moon 114
Vertical Profile Scale 2.10 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.41 deg/min
At longitude 173.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
0.1 2.9 4.3 5.1 5.6 5.9 6.1 6.3
2.1 4.8 6.3 7.1 7.6 7.9 8.2 8.4
4.1 4.8 6.3 7.1 7.6 8.0 8.2 8.4
6.1 5.5 7.0 7.8 8.3 8.7 8.9 9.1
8.1 5.7 7.2 8.0 8.5 8.9 9.2 9.4
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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 10 273 279 15.0 45.2 5.42 12.65 K2III F8V +068-051 +007-001 -16 5399 N 194043.34-161735.3
19407-1618HJ 599AC 1827 2013 38 40 41 40.0 45.7 5.42 7.65 K2III+F8V +068-051 +069-048 -16 5400 N D 194043.34-161735.3
19407-1618ANT 6AD 1999 2009 4 251 252 56.1 56.8 5.42 13.9 K2III+F8V +068-051 +000-003 N 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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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Chch graze 172.6 -43.5 76km 8 5 36
Dunedin 170.5 -45.9 141km 8 1 52
MidNZ 173.0 -41.0 343km 8 6 15
Wellington 174.8 -41.3 275km 8 9 27
Lunar Limb Profile
