MPEC 2001-F31 : 1998 FH74 = 2001 FM31
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M.P.E.C. 2001-F31 Issued 2001 Mar. 24, 21:37 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
1998 FH74 = 2001 FM31
Revision to MPEC 1998-G12
Observations:
K01F31M* C2001 03 22.17545 08 10 44.97 -14 30 24.3 17.0 704
K01F31M C2001 03 22.18908 08 10 48.65 -14 29 26.9 16.7 704
K01F31M C2001 03 22.20133 08 10 51.91 -14 28 35.1 17.1 704
K01F31M C2001 03 22.21423 08 10 55.42 -14 27 39.9 17.0 704
K01F31M C2001 03 23.10822 08 14 55.06 -13 26 43.7 16.7 704
K01F31M C2001 03 23.12048 08 14 58.17 -13 25 55.0 17.6 704
K01F31M C2001 03 23.12957 08 15 00.19 -13 25 20.6 17.1 R 649
K01F31M C2001 03 23.13142 08 15 00.69 -13 25 13.4 17.2 R 649
K01F31M C2001 03 23.13304 08 15 01.10 -13 25 07.0 17.2 R 649
K01F31M C2001 03 23.13305 08 15 01.37 -13 25 05.2 17.0 704
K01F31M C2001 03 23.13820 08 15 02.38 -13 24 46.6 17.3 R 649
K01F31M C2001 03 23.14609 08 15 04.56 -13 24 12.7 18.5 704
K01F31M C2001 03 23.85309 08 18 03.09 -12 38 44.2 15.9 R 165
K01F31M C2001 03 23.85513 08 18 03.55 -12 38 37.0 165
K01F31M C2001 03 23.87134 08 18 07.41 -12 37 36.0 165
K01F31M C2001 03 23.91181 08 18 17.27 -12 35 03.2 17.0 V 176
K01F31M C2001 03 23.91660 08 18 18.30 -12 34 45.1 16.6 V 176
K01F31M C2001 03 23.92072 08 18 19.39 -12 34 30.3 16.7 V 176
K01F31M C2001 03 23.92326 08 18 19.95 -12 34 19.5 16.6 V 176
K01F31M tC2001 03 24.02836 08 18 46.30 -12 27 24.6 808
K01F31M tC2001 03 24.03125 08 18 46.93 -12 27 15.3 808
K01F31M tC2001 03 24.03843 08 18 48.66 -12 26 49.0 808
K01F31M tC2001 03 24.05174 08 18 51.77 -12 25 58.7 808
K01F31M tC2001 03 24.05972 08 18 53.68 -12 25 32.3 808
K01F31M tC2001 03 24.06736 08 18 55.50 -12 25 02.9 808
K01F31M C2001 03 24.08507 08 19 00.00 -12 24 15.8 15.1 R 850
K01F31M C2001 03 24.12500 08 19 09.45 -12 21 47.6 14.9 R 850
K01F31M C2001 03 24.17405 08 19 21.38 -12 18 47.2 16.4 854
K01F31M C2001 03 24.17571 08 19 21.91 -12 18 40.8 16.5 854
K01F31M C2001 03 24.56021 08 20 52.99 -11 55 01.5 17.4 R 428
K01F31M C2001 03 24.56348 08 20 53.76 -11 54 49.5 17.3 R 428
Observer details:
165 Piera Observatory, Barcelona. Observer J. Guarro. 0.40-m f/2 Schmidt
+ CCD.
176 Observatori Astronomic de Consell. Observers A. Lopez, R. Pacheco. 0.2-m
Schmidt-Cassegrain + CCD.
428 Reedy Creek. Observer J. Broughton. 0.25-m f/6.3 Schmidt-Cassegrain
+ CCD.
649 Powell Observatory, Louisburg. Observers D. Young, S. Granger,
D. Trentman. Measurers D. Probert, G. Machin. 0.75-m Newtonian + CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, F. Shelly,
M. Bezpalko, R. Huber, L. Manguso, S. Adams. Measurers J. Stuart,
R. Sayer, J. B. Evans, H. Viggh. 1.0-m f/2.15 reflector + CCD.
808 El Leoncito. Observers H. S. Lepez, R. Gil Hutton, N. Noel.
0.5-m f/7.5 double astrograph + CCD.
850 Cordell-Lorenz Observatory, Sewanee. Observer D. T. Durig. 0.3-m f/5.75
Schmidt-Cassegrain + CCD.
854 Sabino Canyon Observatory, Tucson. Observer J. E. McGaha. 0.30-m f/6.1
Schmidt-Cassegrain + CCD.
Orbital elements:
1998 FH74 = 2001 FM31
Epoch 2001 Apr. 1.0 TT = JDT 2452000.5 Spahr
M 20.15537 (2000.0) P Q
n 0.30230293 Peri. 192.87486 +0.86364210 -0.49123579
a 2.1987430 Node 197.93850 +0.48893618 +0.87093172
e 0.8851300 Incl. 21.55981 +0.12273438 -0.01285801
P 3.26 H 15.8 G 0.15 U 5
Residuals in seconds of arc
980331 704 0.6+ 0.2- 980403 704 0.3+ 0.9- 980419 360 0.1- 0.2-
980331 704 1.5+ 1.9- 980403 704 (2.2- 0.1-) 010322 704 0.7+ 0.0
980331 704 0.9+ 0.2+ 980403 704 (3.9- 1.8+) 010322 704 0.8+ 0.3-
980331 704 0.6- 0.3- 980403 704 0.5- 0.9- 010322 704 0.2+ 0.4-
980331 557 0.2+ 0.6+ 980403 704 0.6+ 0.8+ 010322 704 0.7+ 0.3+
980331 557 0.4- 0.3- 980403 704 0.8- 1.9- 010323 704 0.3+ 0.2+
980331 587 0.9- 0.7+ 980403 704 0.6- 0.6+ 010323 704 0.5+ 0.3+
980331 587 1.3+ 0.5+ 980403 561 0.3- 0.2- 010323 649 0.3- 0.3-
980331 587 0.2- 0.2- 980403 561 0.4+ 0.1- 010323 649 0.2+ 0.4-
980331 106 (2.9- 2.0+) 980403 561 0.3- 0.0 010323 649 0.2+ 0.4-
980331 106 0.5- 0.4+ 980404 691 0.2- 0.0 010323 704 1.0+ 0.3+
980331 106 0.7+ 1.0- 980404 691 0.1- 0.2- 010323 649 0.2- 0.5-
980331 046 0.3+ 1.8+ 980404 691 0.3+ 0.3+ 010323 704 0.4- 1.2+
980331 046 0.4+ 1.0+ 980404 426 0.5+ 0.1+ 010323 165 0.4- 0.7+
980331 046 0.6+ 0.7+ 980404 426 0.2- 0.0 010323 165 0.9- 0.2+
980331 046 0.8+ 0.9+ 980404 426 0.9+ 0.2+ 010323 165 1.5- 0.1+
980331 557 0.1- 0.2+ 980404 402 0.2+ 0.3- 010323 176 0.7+ 0.0
980331 557 0.7- 0.2+ 980404 402 0.1+ 0.2+ 010323 176 1.1- 0.1+
980401 104 0.3- 0.1- 980404 402 0.1- 0.6- 010323 176 0.4+ 0.6-
980401 104 0.7- 1.1- 980406 046 0.6- 1.5+ 010323 176 0.4- 0.6+
980401 104 1.8- 0.7- 980406 046 0.1+ 0.1+ 010324 808 (0.6+ 2.7+)
980401 104 0.2- 0.9- 980406 046 0.2- 1.1+ 010324 808 0.3- 1.2+
980401 557 0.4- 0.5+ 980415 658 0.6- 0.0 010324 808 0.1+ 0.8+
980401 557 1.0+ 0.3- 980415 658 0.8- 0.3- 010324 808 0.5- 1.6+
980402 704 0.2- 0.8+ 980415 658 0.6- 0.0 010324 808 0.3- 1.7-
980402 704 1.6+ 0.0 980416 658 (2.5- 0.8-) 010324 808 0.1- 0.8-
980402 704 0.8- 0.4+ 980416 658 1.4- 2.0- 010324 850 0.1- 0.1+
980402 426 0.0 0.2+ 980418 704 0.5- 0.9+ 010324 850 0.0 0.2+
980402 426 0.3+ 0.2- 980418 704 1.1+ 0.4- 010324 854 1.0- 1.2-
980402 426 0.5- 0.3- 980418 704 0.4+ 0.7+ 010324 854 1.1+ 1.0-
980402 402 0.7+ 0.2+ 980418 704 0.5- 0.5- 010324 428 0.1+ 0.2-
980402 402 0.7+ 0.4- 980419 360 0.2- 0.4+ 010324 428 0.3+ 0.0
980403 704 (0.8+ 2.0-) 980419 360 0.2+ 0.2+
Ephemeris:
1998 FH74 a,e,i = 2.20, 0.89, 22 q = 0.2526
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2001 03 12 06 56.14 -31 31.7 0.304 1.119 106.6 58.3 15.6
2001 03 22 08 09.94 -14 42.7 0.446 1.280 120.2 42.3 16.2
2001 04 01 08 44.91 -06 02.8 0.630 1.431 121.1 36.7 17.1
2001 04 11 09 07.54 -01 23.9 0.835 1.571 117.2 34.6 17.8
2001 04 21 09 25.15 +01 14.2 1.053 1.703 111.7 33.3 18.5
2001 05 01 09 40.44 +02 43.8 1.279 1.828 105.5 32.1 19.0
2001 05 11 09 54.51 +03 30.6 1.511 1.946 99.1 30.8 19.5
2001 05 21 10 07.87 +03 48.8 1.747 2.058 92.6 29.4 19.9
2001 05 31 10 20.81 +03 46.7 1.984 2.165 86.1 27.9 20.2
2001 06 10 10 33.47 +03 29.6 2.219 2.267 79.6 26.1 20.5
2001 06 20 10 45.92 +03 01.4 2.450 2.364 73.1 24.3 20.7
Timothy B. Spahr (C) Copyright 2001 MPC M.P.E.C. 2001-F31
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