MPEC 1993-X02 : 1993 WD
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M.P.E.C. 1993-X02 Issued 1993 Dec. 13, 22:04 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.
MARSDEN@CFA or WILLIAMS@CFA (.HARVARD.EDU, .SPAN or .BITNET)
1993 WD
Observers are urged to follow this object for as long as possible in view of
the similar circumstances of the apparition in late 1994.
Selected additional observations:
J93W00D C1993 11 26.10853 00 48 04.78 +29 51 25.4 14.4 816
J93W00D C1993 11 26.23867 00 45 26.80 +30 03 56.6 14.9 816
J93W00D C1993 11 26.85101 00 33 31.92 +30 59 09.8 14.8 R 540
J93W00D C1993 11 26.86142 00 33 19.80 +31 00 01.0 14.9 R 540
J93W00D C1993 11 27.85801 00 15 06.40 +32 14 40.7 14.3 108
J93W00D C1993 11 27.92547 00 13 54.85 +32 19 03.2 108
J93W00D C1993 11 28.54062 00 03 29.61 +32 56 27.0 14.4 V 385
J93W00D C1993 11 28.54444 00 03 25.80 +32 56 39.4 385
J93W00D C1993 11 30.70241 23 31 26.67 +34 29 14.0 15.9 R 540
J93W00D C1993 11 30.70550 23 31 24.20 +34 29 20.6 15.7 R 540
J93W00D C1993 12 01.14690 23 25 39.39 +34 42 42.0 15.2 V 670
J93W00D C1993 12 01.17535 23 25 17.23 +34 43 28.9 670
J93W00D C1993 12 03.86110 22 55 39.46 +35 35 52.5 108
J93W00D C1993 12 03.86796 22 55 35.51 +35 35 57.2 108
J93W00D C1993 12 05.70764 22 39 36.76 +35 54 05.4 557
J93W00D C1993 12 05.71191 22 39 34.71 +35 54 07.2 16.5 V 557
J93W00D C1993 12 11.89552 22 02 40.04 +36 11 23.4 17.3 V 557
J93W00D C1993 12 11.90135 22 02 38.48 +36 11 23.1 557
J93W00D C1993 12 12.95541 21 58 09.46 +36 11 43.4 801
Observer details:
108 Montelupo. Observers M. Tombelli, S. Bartolini, A. Boattini. Measurer
M. Tombelli. 0.20-m f/10 reflector + CCD
385 Nihondaira Observatory. Observer T. Urata. 0.31-m f/4.7 reflector + CCD.
540 Linz. Observers E. Meyer, E. Obermair, H. Raab. 0.30-m f/5.2 Schmidt
Cassegrain + CCD.
557 Ondrejov. Observers P. Pravec, M. Wolf. Measurer P. Pravec.
0.65-m f/3.6 reflector + CCD.
670 Camarillo. Observer J. E. Rogers. 0.25-m Schmidt-Cassegrain + CCD.
801 Oak Ridge Observatory. Observers R. E. McCrosky, C.-Y. Shao.
1.5-m Wyeth reflector + CCD.
816 Rand Observatory. Observer G. R. Viscome. 0.37-m f/6 reflector +
telecompressor + CCD (unfiltered).
Orbital elements:
1993 WD
Epoch 1993 Nov. 29.0 TT = JDT 2449320.5 Williams
M 260.72639 (2000.0) P Q
n 0.98261757 Peri. 133.14993 -0.65132203 -0.14394538
a 1.0020276 Node 56.60120 -0.61655953 -0.47192052
e 0.2685038 Incl. 63.17556 +0.44230528 -0.86981076
P 1.00 H 16.0 G 0.15
From 46 observations 1993 Nov. 19-Dec. 12.
Ephemeris:
1993 WD a,e,i = 1.00, 0.27, 63 q = 0.7330
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1993 12 09 22 17.37 +36 08.4 0.344 1.069 94.6 66.7 16.2
1993 12 14 21 54.08 +36 11.6 0.417 1.047 86.8 69.8 16.6
1993 12 19 21 38.37 +36 09.0 0.489 1.025 80.7 71.3 17.0
1993 12 24 21 27.01 +36 05.6 0.558 1.002 75.5 71.8 17.3
1993 12 29 21 18.26 +36 01.8 0.624 0.979 71.1 71.8 17.4
1994 01 03 21 11.11 +35 56.3 0.686 0.955 67.1 71.5 17.6
1994 01 08 21 05.00 +35 48.0 0.743 0.932 63.5 70.9 17.7
1994 01 13 20 59.55 +35 35.2 0.793 0.908 60.3 70.3 17.8
1994 01 18 20 54.53 +35 16.3 0.837 0.884 57.4 69.7 17.8
1994 01 23 20 49.81 +34 49.2 0.874 0.861 54.8 69.1 17.8
1994 01 28 20 45.34 +34 11.8 0.904 0.838 52.5 68.7 17.8
Gareth V. Williams M.P.E.C. 1993-X02
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