MPEC 1996-B12 : 1989 JA
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M.P.E.C. 1996-B12 Issued 1996 Jan. 27, 15:01 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
1989 JA
Observations:
J89J00A C1996 01 25.73206 13 08 06.30 +16 35 03.6 413
J89J00A C1996 01 25.73683 13 08 06.51 +16 35 04.8 413
J89J00A C1996 01 26.72774 13 08 56.43 +16 40 55.3 413
J89J00A C1996 01 26.73244 13 08 56.69 +16 40 57.2 413
Observer details:
413 Siding Spring Observatory. Observers R. H. McNaught, G. J. Garradd,
D. I. Steel. Measurer R. H. McNaught. 1.0-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc
960125 413 9.4- 7.1+ 960126 413 9.4- 7.5+ MPC 21973
Orbital elements:
1989 JA
Id. G. J. Garradd (1996 observations)
Epoch 1996 Apr. 27.0 TT = JDT 2450200.5 Williams
M 319.41736 (2000.0) P Q
n 0.41843683 Peri. 231.83927 +0.37359467 +0.89833539
a 1.7703105 Node 61.60738 -0.74750164 +0.43910464
e 0.4843520 Incl. 15.23229 -0.54924341 +0.01344008
P 2.36 H 17.0 G 0.15 U 2
Residuals in seconds of arc
890406 675 0.2- 0.8- 890515 474 0.5- 1.6- 890608 474 2.1- 0.4+
890406 675 1.0+ 0.9- 890515 474 0.4+ 0.1- 890608 474 1.8- 0.5+
890408 675 0.2- 1.1- 890519 568 1.0+ 1.8- 890728 474 2.1+ 0.1+
890408 675 0.0 1.8- 890522 046 0.3- 0.7+ 890728 474 1.4+ 0.0
890501 675 (0.9+ 4.0-) 890522 046 0.0 0.3- 890729 474 1.3+ 1.3-
890501 675 (3.1- 3.9-) 890523 046 0.0 0.6- 890729 474 1.3+ 0.2-
890503 675 (1.3- 3.6-) 890523 046 0.1+ 0.5- 890905 474 0.9- 2.1-
890503 675 0.4- 2.0- 890523 046 1.8+ 1.0+ 890923 474 0.8+ 0.1-
890504 675 1.4- 0.1- 890523 046 2.1+ 1.7+ 890923 474 0.4- 0.4-
890504 675 2.1- 1.3- 890524 046 0.9- 0.7- 890925 801 1.6+ 1.3-
890507 801 (2.1+ 3.3-) 890524 046 0.9+ 1.3+ 891026 801 0.9+ 1.2-
890508 801 0.9+ 1.2+ 890524 046 (3.0+ 2.8+) 891129 688 0.5- 0.6+
890508 675 1.7- 1.1- 890524 046 2.2+ 0.9+ 891129 688 0.8- 0.4+
890508 675 1.2- 2.1- 890525 046 (3.8+ 3.1+) 891129 688 0.7- 0.9+
890509 801 0.0 0.5+ 890525 046 1.2- 0.0 960125 413 0.5+ 0.5+
890510 474 1.2- 1.8+ 890528 809 0.5+ 0.1- 960125 413 0.2+ 0.0
890510 474 0.2- 1.8+ 890528 809 1.8+ 0.9+ 960126 413 0.1+ 0.7+
890513 474 1.5- 0.0 890604 474 0.9+ 0.1+ 960126 413 0.6+ 0.8+
890513 474 0.8- 0.2- 890604 474 0.1+ 0.5+
890515 474 1.5- 0.8- 890605 568 1.7- 1.0-
Ephemeris:
1989 JA a,e,i = 1.77, 0.48, 15 q = 0.9129
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1996 01 18 13 00.92 +15 57.9 1.509 2.045 108.4 27.2 20.7
1996 01 28 13 09.97 +16 48.7 1.356 1.993 115.9 26.4 20.4
1996 02 07 13 16.72 +18 05.6 1.210 1.938 123.5 25.1 20.0
1996 02 17 13 20.45 +19 50.5 1.076 1.881 131.3 23.3 19.6
1996 02 27 13 20.23 +22 02.1 0.956 1.821 138.7 21.0 19.2
1996 03 08 13 15.16 +24 33.6 0.851 1.759 145.0 18.9 18.8
1996 03 18 13 04.42 +27 10.4 0.765 1.695 148.5 17.9 18.5
1996 03 28 12 47.90 +29 26.9 0.698 1.629 147.2 19.4 18.3
1996 04 07 12 26.93 +30 52.4 0.649 1.561 141.2 23.7 18.1
1996 04 17 12 04.33 +31 01.8 0.617 1.491 132.4 29.8 18.1
1996 04 27 11 43.70 +29 45.1 0.598 1.420 122.5 36.7 18.1
1996 05 07 11 27.79 +27 10.5 0.586 1.349 112.8 43.6 18.2
1996 05 17 11 17.66 +23 32.9 0.577 1.278 103.7 50.3 18.2
1996 05 27 11 13.12 +19 05.1 0.566 1.207 95.5 56.7 18.2
1996 06 06 11 13.14 +13 54.8 0.552 1.140 88.2 62.9 18.2
1996 06 16 11 16.49 +08 02.7 0.531 1.076 81.7 69.1 18.2
1996 06 26 11 21.97 +01 25.2 0.504 1.019 76.0 75.3 18.2
1996 07 06 11 28.21 -06 04.1 0.471 0.972 71.1 81.6 18.2
1996 07 16 11 33.84 -14 33.2 0.433 0.937 67.1 87.7 18.1
1996 07 26 11 37.36 -24 09.3 0.394 0.917 64.4 92.8 18.1
1996 08 05 11 36.76 -34 55.0 0.356 0.914 63.6 95.9 18.0
1996 08 15 11 29.40 -46 46.6 0.324 0.927 65.6 95.8 17.8
1996 08 25 11 09.28 -59 34.1 0.298 0.957 71.1 91.8 17.5
1996 09 04 10 11.7 -72 42.9 0.281 0.999 80.1 83.8 17.2
1996 09 14 06 00.2 -81 12.5 0.276 1.053 92.1 72.7 16.9
1996 09 24 01 59.0 -71 28.9 0.284 1.114 105.7 60.1 16.7
1996 10 04 01 04.04 -56 55.9 0.310 1.180 118.5 48.2 16.6
1996 10 14 00 44.14 -43 17.6 0.358 1.250 128.0 39.0 16.8
1996 10 24 00 36.25 -31 47.0 0.426 1.321 132.5 33.7 17.2
1996 11 03 00 34.68 -22 33.2 0.515 1.392 132.4 31.8 17.6
1996 11 13 00 37.22 -15 14.5 0.622 1.463 129.0 31.7 18.1
1996 11 23 00 42.80 -09 23.1 0.744 1.533 124.1 32.2 18.7
1996 12 03 00 50.67 -04 35.9 0.880 1.602 118.3 32.8 19.1
1996 12 13 01 00.33 -00 34.8 1.026 1.669 112.2 33.1 19.6
1996 12 23 01 11.45 +02 52.7 1.182 1.734 106.0 33.0 19.9
1997 01 02 01 23.74 +05 55.0 1.345 1.797 99.9 32.6 20.3
1997 01 12 01 37.01 +08 38.2 1.513 1.857 93.8 31.9 20.6
1997 01 22 01 51.11 +11 06.2 1.683 1.916 87.7 30.9 20.9
Gareth V. Williams (C) Copyright 1996 MPC M.P.E.C. 1996-B12
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