MPEC 1997-Y24: 1996 AS1
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M.P.E.C. 1997-Y24 Issued 1997 Dec. 31, 23:13 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html
1996 AS1
Revision to MPEC 1996-B08
Observations:
J96A01S C1997 12 27.21100 06 22 35.10 +32 44 09.9 21.8 V 691
J96A01S C1997 12 27.21566 06 22 34.63 +32 44 09.2 21.8 V 691
J96A01S C1997 12 27.22122 06 22 34.08 +32 44 06.5 22.3 V 691
J96A01S C1997 12 31.25832 06 15 32.04 +32 22 27.7 20.6 V 691
J96A01S C1997 12 31.27035 06 15 30.78 +32 22 24.0 20.8 V 691
J96A01S C1997 12 31.28274 06 15 29.45 +32 22 19.6 20.8 V 691
Observer details:
691 Steward Observatory, Kitt Peak. Observer J. V. Scotti. 0.9-m Spacewatch
telescope.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
971227 691 14.6- 8.4- 971231 691 14.2- 7.3- MPC 26749 -0.0090 day
Orbital elements:
1996 AS1
Epoch 1997 Dec. 18.0 TT = JDT 2450800.5 Williams
M 137.97906 (2000.0) P Q
n 0.42585154 Peri. 357.29490 +0.40923270 +0.88514744
a 1.7497012 Node 296.77907 -0.83241241 +0.26278707
e 0.3611181 Incl. 14.36274 -0.37365516 +0.38400127
P 2.31 H 18.5 G 0.15 U 5
Residuals in seconds of arc
960113 691 0.3- 0.0 960122 711 1.9+ 0.4+ 960209 711 0.7- 1.0-
960113 691 0.6+ 0.0 960122 711 0.8+ 0.5- 960209 711 0.1+ 0.8-
960113 691 0.9- 0.2- 960125 658 3.4- 0.5+ 960210 711 0.2+ 0.5-
960114 691 1.0+ 0.2- 960125 658 1.7- 0.0 960210 711 0.3+ 0.5-
960114 691 1.1+ 0.1+ 960125 658 0.2- 0.6- 960212 711 0.8+ 0.4-
960115 691 0.3- 0.2+ 960126 413 1.0+ 0.4+ 960212 711 0.5+ 1.0+
960115 691 0.7- 0.1+ 960126 413 0.1+ 0.4+ 971227 691 0.4- 0.6-
960115 691 1.1- 0.2+ 960127 691 0.5- 0.0 971227 691 0.0 0.0
960120 691 0.2- 0.6- 960127 691 1.0- 0.2- 971227 691 0.6+ 1.1-
960120 691 0.5- 0.3- 960127 691 0.8- 0.3- 971231 691 0.0 0.4+
960120 691 0.8- 0.7+ 960127 413 0.8+ 0.7+ 971231 691 0.1+ 0.8+
960120 711 0.1- 0.2+ 960127 413 1.1+ 0.5+ 971231 691 0.2- 0.6+
960120 711 0.7+ 0.1+ 960128 413 1.2+ 0.5+
960121 711 0.8+ 0.4- 960128 413 0.2+ 0.6+
Ephemeris:
1996 AS1 a,e,i = 1.75, 0.36, 14 q = 1.1179
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1997 12 28 06 21.19 +32 40.2 1.332 2.307 170.5 4.0 21.3
1998 01 02 06 12.58 +32 12.2 1.345 2.316 167.6 5.2 21.4
1998 01 07 06 04.49 +31 40.1 1.367 2.323 162.5 7.3 21.5
1998 01 12 05 57.15 +31 05.0 1.395 2.330 156.6 9.7 21.7
1998 01 17 05 50.72 +30 28.1 1.430 2.337 150.5 12.0 21.8
1998 01 22 05 45.31 +29 50.5 1.471 2.343 144.5 14.1 22.0
1998 01 27 05 40.97 +29 13.2 1.518 2.349 138.6 16.1 22.1
1998 02 01 05 37.73 +28 37.0 1.570 2.354 132.9 17.8 22.3
1998 02 06 05 35.57 +28 02.4 1.626 2.359 127.4 19.4 22.4
Gareth V. Williams (C) Copyright 1997 MPC M.P.E.C. 1997-Y24
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