MPEC 2001-Y50: 2001 YM4
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M.P.E.C. 2001-Y50 Issued 2001 Dec. 27, 19:30 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 YM4
Observations:
K01Y04M* C2001 12 22.38086 09 12 42.18 +30 24 27.7 19.6 704
K01Y04M C2001 12 22.39588 09 12 38.81 +30 23 51.3 20.1 704
K01Y04M C2001 12 22.41100 09 12 35.57 +30 23 14.3 19.6 704
K01Y04M C2001 12 22.42601 09 12 32.30 +30 22 37.3 20.1 704
K01Y04M C2001 12 23.36841 09 09 11.17 +29 43 35.0 19.9 704
K01Y04M C2001 12 23.38368 09 09 07.81 +29 42 57.1 20.1 704
K01Y04M C2001 12 23.39894 09 09 04.38 +29 42 19.6 20.1 704
K01Y04M C2001 12 23.41419 09 09 01.02 +29 41 41.3 20.1 704
K01Y04M C2001 12 23.42945 09 08 57.59 +29 41 03.3 19.7 704
K01Y04M C2001 12 25.27330 09 02 19.25 +28 23 31.2 20.8 R 651
K01Y04M C2001 12 25.27612 09 02 18.43 +28 23 22.7 20.7 R 651
K01Y04M C2001 12 25.27898 09 02 17.81 +28 23 16.7 20.8 R 651
Observer details:
651 Grasslands Observatory, Tucson. Observer J. E. McGaha. 0.62-m f/5.1
reflector + CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, F. Shelly,
M. Bezpalko, R. Huber, L. Manguso, S. Adams, J. Piscitelli. Measurers
J. Stuart, R. Sayer, J. B. Evans, H. Viggh. 1.0-m f/2.15 reflector + CCD.
Orbital elements:
2001 YM4
Epoch 2001 Dec. 17.0 TT = JDT 2452260.5 MPC
M 32.68043 (2000.0) P Q
n 0.43643674 Peri. 96.26388 +0.79837207 -0.44546580
a 1.7212945 Node 290.83622 +0.21447140 +0.83908859
e 0.3917904 Incl. 25.69124 +0.56267580 +0.31223477
P 2.26 H 21.2 G 0.15
From 12 observations 2001 Dec. 22-25.
Ephemeris:
2001 YM4 a,e,i = 1.72, 0.39, 26 q = 1.0469
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2001 12 27 08 55.99 +27 09.9 0.409 1.340 145.3 24.7 21.0
2002 01 01 08 37.60 +23 33.2 0.413 1.367 154.2 18.2 20.9
2002 01 06 08 19.65 +19 58.2 0.425 1.395 162.9 12.0 20.8
2002 01 11 08 02.87 +16 34.2 0.443 1.423 170.4 6.6 20.7
2002 01 16 07 47.84 +13 29.0 0.470 1.451 172.4 5.1 20.8
2002 01 21 07 34.94 +10 47.6 0.503 1.478 167.2 8.5 21.1
2002 01 26 07 24.31 +08 31.8 0.542 1.506 160.5 12.6 21.5
Brian G. Marsden (C) Copyright 2001 MPC M.P.E.C. 2001-Y50
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