MPEC 1996-A15 : 1991 DG
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M.P.E.C. 1996-A15 Issued 1996 Jan. 10, 16:45 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
1991 DG
Observations:
J91D00G C1996 01 09.60402 06 53 40.47 -02 10 46.0 413
J91D00G pC1996 01 09.60717 06 53 40.01 -02 10 45.3 413
J91D00G C1996 01 10.64625 06 51 39.68 -02 07 37.5 413
J91D00G C1996 01 10.65016 06 51 39.13 -02 07 35.8 413
Observer details:
413 Siding Spring Observatory. Observers R. H. McNaught, G. J. Garradd.
Measurer R. H. McNaught. 1.0-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc
960109 413 41.0+ 6.0- 960110 413 40.6+ 5.7- MPC 21975
Orbital elements:
1991 DG
Id. G. J. Garradd (1996 observations)
Epoch 1996 Apr. 27.0 TT = JDT 2450200.5 Williams
M 321.14695 (2000.0) P Q
n 0.57805784 Peri. 63.07952 -0.44772955 +0.89416834
a 1.4272121 Node 180.32856 -0.87357694 -0.43768296
e 0.3629537 Incl. 11.15117 -0.19079198 -0.09432182
P 1.71 H 19.0 G 0.15 U 2
Residuals in seconds of arc
910220 413 1.4- 0.1- 910318 801 0.2- 0.1+ 910908 801 0.1- 0.7-
910220 413 0.5- 0.0 910320 413 (3.8+ 3.7-) 910908 801 0.1- 0.0
910222 413 1.8+ 0.5- 910321 413 0.8+ 1.1- 910912 801 1.1- 0.3+
910222 413 1.1+ 0.1- 910321 413 1.0+ 1.0- 910912 801 0.2+ 0.3+
910224 413 1.7- 1.0+ 910404 413 0.5+ 0.2- 910914 675 1.2+ 0.5-
910224 413 (2.2+ 2.3-) 910404 413 0.0 0.9+ 911016 691 0.7- 0.1-
910311 474 0.8+ 0.5- 910806 801 1.6+ 0.2+ 911016 691 1.6- 0.1-
910311 474 1.2- 0.5+ 910806 801 1.0+ 0.0 911016 691 1.5- 0.2+
910313 801 0.3- 0.6+ 910812 801 0.7+ 0.2- 960109 413 0.2+ 0.2-
910313 801 0.2- 0.6+ 910812 801 1.7- 0.0 960109 413 1.0- 0.0
910314 413 0.0 0.1+ 910906 801 0.6+ 0.3+ 960110 413 1.0+ 0.7-
910318 801 0.3- 0.6- 910906 801 0.6+ 0.4- 960110 413 0.2- 0.2+
Ephemeris:
1991 DG a,e,i = 1.43, 0.36, 11 q = 0.9092
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1996 01 08 06 56.75 -02 14.6 0.746 1.689 155.0 14.2 20.3
1996 01 18 06 37.50 -01 30.2 0.721 1.650 150.4 17.1 20.3
1996 01 28 06 19.92 +00 00.2 0.717 1.608 141.2 22.6 20.4
1996 02 07 06 06.59 +02 04.1 0.731 1.563 130.5 28.7 20.5
1996 02 17 05 58.84 +04 26.8 0.756 1.515 120.1 34.3 20.7
1996 02 27 05 57.04 +06 55.7 0.788 1.466 110.6 39.2 20.9
1996 03 08 06 00.83 +09 22.2 0.821 1.414 102.1 43.3 21.0
Gareth V. Williams (C) Copyright 1996 MPC M.P.E.C. 1996-A15
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