MPEC 1997-X01: 1997 WB21
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M.P.E.C. 1997-X01 Issued 1997 Dec. 2, 14:12 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
1997 WB21
Observations:
J97W21B* C1997 11 26.37895 01 00 30.58 +23 12 42.0 18.7 V 566
J97W21B C1997 11 26.38846 01 00 33.88 +23 12 39.5 18.6 V 566
J97W21B C1997 11 26.39828 01 00 37.24 +23 12 36.6 18.8 V 566
J97W21B C1997 11 29.29146 01 17 17.33 +22 59 36.2 19.2 V 566
J97W21B C1997 11 29.30155 01 17 20.39 +22 59 32.7 19.0 V 566
J97W21B C1997 11 29.31135 01 17 23.43 +22 59 29.9 19.0 V 566
J97W21B C1997 11 30.20770 01 22 14.41 +22 54 49.3 18.4 V 566
J97W21B C1997 11 30.21904 01 22 17.82 +22 54 46.5 18.8 V 566
J97W21B C1997 11 30.22912 01 22 20.83 +22 54 44.1 18.3 V 566
J97W21B C1997 11 30.26311 01 22 30.95 +22 54 34.2 18.7 V 566
J97W21B C1997 11 30.27326 01 22 33.97 +22 54 30.9 18.6 V 566
J97W21B C1997 11 30.28356 01 22 37.01 +22 54 28.3 18.6 V 566
J97W21B C1997 11 30.78837 01 25 15.91 +22 51 24.7 587
J97W21B C1997 11 30.79236 01 25 17.09 +22 51 23.4 18.6 V 587
J97W21B C1997 12 02.13953 01 32 06.93 +22 43 56.8 658
J97W21B C1997 12 02.14344 01 32 08.03 +22 43 55.2 658
J97W21B C1997 12 02.14753 01 32 09.18 +22 43 54.2 658
Observer details:
566 Haleakala-NEAT/GEODSS. Observers E. F. Helin, S. Pravdo, K. J. Lawrence,
D. L. Rabinowitz for the NEAT team. 1.0-m f/2.2 GEODSS telescope + CCD.
587 Sormano. Observers M. Cavagna, A. Testa. 0.5-m reflector + CCD.
658 Dominion Astrophysical Observatory. Observer D. D. Balam. 1.82-m
reflector + CCD.
Orbital elements:
1997 WB21
Epoch 1997 Nov. 28.0 TT = JDT 2450780.5 Williams
M 31.47528 (2000.0) P Q
n 0.57244572 Peri. 81.01341 +0.99728697 -0.04746339
a 1.4365250 Node 281.69257 +0.02043626 +0.91284089
e 0.3067530 Incl. 3.29396 +0.07071814 +0.40554746
P 1.72 H 21.0 G 0.15
From 17 observations 1997 Nov. 26-Dec. 2.
Ephemeris:
1997 WB21 a,e,i = 1.44, 0.31, 3 q = 0.9959
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1997 11 28 01 10.07 +23 05.8 0.170 1.117 137.2 36.9 18.9
1997 12 03 01 36.30 +22 39.5 0.193 1.137 138.3 35.2 19.2
1997 12 08 01 58.54 +22 11.2 0.219 1.158 138.5 34.3 19.4
1997 12 13 02 17.71 +21 45.3 0.248 1.180 137.8 34.1 19.7
1997 12 18 02 34.54 +21 23.5 0.279 1.202 136.6 34.3 20.0
1997 12 23 02 49.62 +21 06.5 0.312 1.224 134.9 34.7 20.3
1997 12 28 03 03.43 +20 54.3 0.348 1.247 132.9 35.3 20.6
1998 01 02 03 16.33 +20 46.6 0.387 1.270 130.7 35.9 20.9
1998 01 07 03 28.59 +20 42.9 0.427 1.293 128.4 36.6 21.2
1998 01 12 03 40.38 +20 42.5 0.470 1.316 126.0 37.2 21.5
1998 01 17 03 51.82 +20 44.6 0.515 1.339 123.6 37.7 21.7
1998 01 22 04 03.02 +20 48.6 0.562 1.362 121.0 38.2 22.0
1998 01 27 04 14.07 +20 53.8 0.611 1.385 118.5 38.7 22.2
(Last issue was M.P.E.C. 1997-W05)
Gareth V. Williams (C) Copyright 1997 MPC M.P.E.C. 1997-X01
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