MPEC 2001-H49: 2001 HH31 = 1997 WC54
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M.P.E.C. 2001-H49 Issued 2001 Apr. 30, 18:14 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.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
2001 HH31 = 1997 WC54
Observations:
K01H31H C2001 03 28.47009 15 44 33.45 -04 59 47.1 21.5 V 691
K01H31H C2001 03 28.49092 15 44 33.32 -04 59 44.7 20.9 V 691
K01H31H C2001 03 28.51192 15 44 33.20 -04 59 42.0 21.7 V 691
K01H31H* C2001 04 25.30850 15 25 11.57 -04 10 24.1 19.1 R 699
K01H31H C2001 04 25.32964 15 25 09.85 -04 10 23.3 699
K01H31H C2001 04 25.35076 15 25 08.03 -04 10 23.4 699
K01H31H C2001 04 25.37190 15 25 06.27 -04 10 21.5 699
K01H31H 1C2001 04 26.44212 15 23 39.77 -04 09 35.3 658
K01H31H 1C2001 04 26.44652 15 23 39.43 -04 09 34.5 658
K01H31H 1C2001 04 26.44860 15 23 39.23 -04 09 34.7 658
K01H31H C2001 04 26.92002 15 23 00.70 -04 09 16.7 557
K01H31H C2001 04 26.96066 15 22 57.23 -04 09 15.5 557
K01H31H C2001 04 26.98181 15 22 55.34 -04 09 14.7 18.9 V 557
K01H31H C2001 04 27.00685 15 22 53.18 -04 09 13.3 118
K01H31H C2001 04 27.02466 15 22 51.77 -04 09 13.1 18.3 R 046
K01H31H C2001 04 27.02604 15 22 51.61 -04 09 13.0 046
K01H31H C2001 04 27.02870 15 22 51.31 -04 09 12.5 046
K01H31H C2001 04 27.02993 15 22 51.23 -04 09 12.6 118
K01H31H C2001 04 27.03044 15 22 51.17 -04 09 13.2 18.1 R 046
K01H31H C2001 04 27.03742 15 22 50.54 -04 09 12.7 18.2 R 118
K01H31H C2001 04 27.31237 15 22 27.71 -04 09 02.5 918
K01H31H C2001 04 27.31792 15 22 27.30 -04 09 02.0 19.4 R 918
K01H31H C2001 04 27.32291 15 22 26.76 -04 09 02.5 19.3 R 918
K01H31H C2001 04 28.04546 15 21 25.34 -04 08 41.4 17.8 R 118
K01H31H C2001 04 28.05545 15 21 24.43 -04 08 41.4 118
K01H31H C2001 04 28.30265 15 21 03.64 -04 08 34.0 19.1 R 651
K01H31H C2001 04 28.30745 15 21 03.20 -04 08 33.2 651
K01H31H C2001 04 28.31210 15 21 02.88 -04 08 34.1 651
K01H31H C2001 04 28.35925 15 20 58.46 -04 08 32.1 18.8 R 926
K01H31H C2001 04 28.36428 15 20 58.04 -04 08 32.4 18.8 R 926
K01H31H C2001 04 28.36743 15 20 57.76 -04 08 32.6 19.2 R 926
K01H31H 4C2001 04 29.33962 15 19 33.07 -04 08 15.1 673
K01H31H C2001 04 29.34649 15 19 32.33 -04 08 15.8 18.7 V 926
K01H31H 4C2001 04 29.35238 15 19 31.98 -04 08 15.7 673
K01H31H C2001 04 29.35271 15 19 31.73 -04 08 15.7 18.9 V 926
K01H31H 4C2001 04 29.35851 15 19 31.28 -04 08 15.9 673
K01H31H C2001 04 29.35862 15 19 31.18 -04 08 15.4 18.7 V 926
K01H31H C2001 04 30.35203 15 18 02.28 -04 08 10.4 17.3 R 649
K01H31H C2001 04 30.35326 15 18 02.34 -04 08 08.5 18.6 V 926
K01H31H C2001 04 30.35586 15 18 02.09 -04 08 08.3 18.7 V 926
K01H31H C2001 04 30.35844 15 18 01.83 -04 08 08.9 19.3 V 926
K01H31H C2001 04 30.36656 15 18 00.90 -04 08 09.9 18.2 R 649
K01H31H C2001 04 30.37970 15 17 59.64 -04 08 09.6 18.9 R 649
Observer details:
046 Klet. Observers J. Ticha, M. Tichy, M. Kocer. 0.57-m f/5.2
reflector + CCD.
118 Modra. Observers A. Galad, J. Toth. 0.6-m f/5.5 reflector + CCD.
557 Ondrejov. Observers P. Pravec, L. Sarounova. 0.65-m f/3.6 reflector + CCD.
649 Powell Observatory, Louisburg. Observer K. Smalley. 0.75-m Newtonian
+ CCD.
651 Grasslands Observatory, Tucson. Observer J. E. McGaha. 0.62-m f/5.1
reflector + CCD.
658 National Research Council of Canada. Observer D. D. Balam. 1.82-m
Plaskett reflector + CCD.
673 Table Mountain Observatory, Wrightwood. Observers D. Esqueda, A. Esqueda,
T. Ha. Measurer M. Hicks. 0.6-m reflector + CCD.
691 Steward Observatory, Kitt Peak. Observer J. L. Montani.
0.9-m Spacewatch telescope.
699 Lowell Observatory-LONEOS. Observer B. A. Skiff. 0.59-m LONEOS Schmidt
+ CCD.
918 Badlands Observatory, Quinn. Observer R. Dyvig. 0.66-m f/4.8 reflector
+ CCD.
926 Tenagra II Observatory. Observer M. Schwartz. Measurer P. R. Holvorcem.
0.5-m f/10 Ritchey-Chretien + CCD.
Orbital elements:
2001 HH31 = 1997 WC54
Epoch 2001 Apr. 1.0 TT = JDT 2452000.5 Spahr
M 252.73438 (2000.0) P Q
n 0.46306089 Peri. 275.70444 +0.95254341 +0.21913057
a 1.6546672 Node 71.77646 -0.10367936 +0.88615827
e 0.2888829 Incl. 12.85271 -0.28620210 +0.40829561
P 2.13 H 17.8 G 0.15 U 5
Residuals in seconds of arc
971130 566 0.1+ 0.2+ 010426 658 0.0 0.2- 010428 651 0.5+ 0.6+
971130 566 0.4+ 0.7+ 010426 557 0.0 0.1+ 010428 651 2.0+ 0.4-
971130 566 0.3+ 0.6+ 010426 557 0.3+ 0.1- 010428 926 0.7- 0.5+
971204 704 0.8+ 1.4- 010426 557 0.8- 0.1- 010428 926 0.2- 0.1+
971204 704 0.1- 1.0+ 010427 118 0.6- 0.3+ 010428 926 0.1- 0.2-
971204 704 0.6- 0.1+ 010427 046 1.0+ 0.1- 010429 673 0.6+ 1.0+
971204 704 1.3- 1.1- 010427 046 0.3+ 0.0 010429 926 0.0 0.2-
971204 704 0.2+ 0.1+ 010427 046 0.7- 0.4+ 010429 673 1.9+ 0.3+
010328 691 0.0 0.5- 010427 118 0.0 0.2+ 010429 926 0.4- 0.1-
010328 691 0.3+ 0.5- 010427 046 0.6- 0.4- 010429 673 0.2- 0.0
010328 691 0.8+ 0.2- 010427 118 0.6- 0.2- 010429 926 0.4- 0.1+
010425 699 0.0 0.2+ 010427 918 0.4- 0.3+ 010430 649 0.0 0.7-
010425 699 0.5+ 0.1- 010427 918 0.7+ 0.6+ 010430 926 0.4+ 0.2+
010425 699 0.6- 1.2- 010427 918 0.9- 0.0 010430 926 0.3+ 0.4+
010425 699 0.6- 0.3- 010428 118 0.4- 0.8+ 010430 926 0.0 0.2-
010426 658 0.1- 0.5- 010428 118 0.8- 0.6+ 010430 649 0.3- 0.2-
010426 658 0.4+ 0.1+ 010428 651 0.7+ 0.1- 010430 649 0.8- 0.0
Ephemeris:
2001 HH31 a,e,i = 1.65, 0.29, 13 q = 1.1767
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2001 04 21 15 30.50 -04 15.1 0.882 1.843 155.3 13.2 19.6
2001 05 01 15 17.06 -04 08.1 0.819 1.810 164.6 8.5 19.2
2001 05 11 15 00.56 -04 19.3 0.779 1.776 166.2 7.8 19.1
2001 05 21 14 43.11 -04 54.7 0.762 1.741 157.5 12.9 19.2
2001 05 31 14 27.26 -05 56.8 0.767 1.704 146.0 19.5 19.4
2001 06 10 14 15.07 -07 24.0 0.789 1.666 134.6 25.7 19.6
2001 06 20 14 07.63 -09 12.3 0.823 1.628 124.1 31.1 19.8
2001 06 30 14 05.28 -11 17.4 0.866 1.588 114.8 35.5 19.9
2001 07 10 14 07.74 -13 35.6 0.912 1.548 106.6 39.0 20.1
2001 07 20 14 14.59 -16 03.3 0.959 1.508 99.5 41.7 20.2
2001 07 30 14 25.45 -18 37.9 1.005 1.467 93.2 43.7 20.3
2001 08 09 14 39.96 -21 16.4 1.046 1.428 87.7 45.2 20.4
2001 08 19 14 57.96 -23 55.5 1.084 1.389 82.9 46.3 20.4
2001 08 29 15 19.41 -26 31.9 1.116 1.351 78.8 47.1 20.5
2001 09 08 15 44.30 -29 00.5 1.143 1.316 75.2 47.7 20.5
2001 09 18 16 12.71 -31 15.6 1.164 1.283 72.1 48.2 20.5
2001 09 28 16 44.72 -33 10.1 1.182 1.253 69.5 48.5 20.5
2001 10 08 17 20.19 -34 35.7 1.195 1.228 67.4 48.7 20.5
2001 10 18 17 58.83 -35 23.3 1.206 1.207 65.7 48.8 20.4
2001 10 28 18 39.97 -35 24.5 1.215 1.191 64.3 48.8 20.4
2001 11 07 19 22.61 -34 32.8 1.225 1.181 63.4 48.6 20.4
2001 11 17 20 05.61 -32 45.3 1.238 1.177 62.6 48.3 20.4
Timothy B. Spahr (C) Copyright 2001 MPC M.P.E.C. 2001-H49
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