MPEC 2001-Y21 : 2001 YD1
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M.P.E.C. 2001-Y21 Issued 2001 Dec. 19, 23:22 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 YD1
Observations:
K01Y01D* C2001 12 17.29210 05 14 17.29 +20 51 02.4 19.4 704
K01Y01D C2001 12 17.30722 05 14 20.17 +20 53 38.7 19.7 704
K01Y01D C2001 12 17.32235 05 14 23.10 +20 56 13.2 19.5 704
K01Y01D C2001 12 17.33749 05 14 26.02 +20 58 47.4 19.5 704
K01Y01D C2001 12 17.35264 05 14 28.98 +21 01 21.5 19.7 704
K01Y01D C2001 12 18.23112 05 17 58.50 +23 14 17.1 19.1 704
K01Y01D C2001 12 18.24627 05 18 00.82 +23 16 19.7 19.1 704
K01Y01D C2001 12 18.26141 05 18 03.06 +23 18 21.4 19.2 704
K01Y01D C2001 12 18.27677 05 18 05.35 +23 20 24.2 19.2 704
K01Y01D C2001 12 18.29867 05 18 08.72 +23 23 16.5 19.5 704
K01Y01D C2001 12 18.31390 05 18 10.89 +23 25 16.1 19.4 704
K01Y01D C2001 12 18.32912 05 18 13.15 +23 27 14.7 19.4 704
K01Y01D C2001 12 18.34436 05 18 15.48 +23 29 12.6 19.4 704
K01Y01D C2001 12 18.35959 05 18 17.78 +23 31 09.2 19.3 704
K01Y01D C2001 12 19.37109 05 21 23.41 +25 27 38.4 19.5 704
K01Y01D C2001 12 19.37134 05 21 23.50 +25 27 38.7 19.4 704
K01Y01D C2001 12 19.38939 05 21 25.75 +25 29 23.0 19.6 704
K01Y01D C2001 12 19.38964 05 21 25.75 +25 29 26.8 19.5 704
K01Y01D C2001 12 19.38989 05 21 25.76 +25 29 27.8 20.2 704
K01Y01D C2001 12 19.40682 05 21 28.01 +25 31 05.5 19.4 704
K01Y01D C2001 12 19.40707 05 21 28.00 +25 31 09.3 19.4 704
K01Y01D C2001 12 19.40731 05 21 28.02 +25 31 10.5 20.1 704
K01Y01D C2001 12 19.42802 05 21 30.83 +25 33 09.0 19.8 704
K01Y01D C2001 12 19.42826 05 21 30.84 +25 33 12.3 19.8 704
K01Y01D C2001 12 19.42851 05 21 30.82 +25 33 13.5 20.0 704
K01Y01D C2001 12 19.44324 05 21 32.91 +25 34 37.0 19.8 704
K01Y01D C2001 12 19.44349 05 21 32.89 +25 34 40.1 19.8 704
Observer details:
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 YD1
Epoch 2001 Dec. 17.0 TT = JDT 2452260.5 MPC
M 28.62856 (2000.0) P Q
n 0.54153195 Peri. 285.20935 +0.97383297 -0.19145238
a 1.4906877 Node 85.94378 +0.22506579 +0.88721447
e 0.4655559 Incl. 7.05159 -0.03153959 +0.41975763
P 1.82 H 24.3 G 0.15
From 27 observations 2001 Dec. 17-19.
Ephemeris:
2001 YD1 a,e,i = 1.49, 0.47, 7 q = 0.7967
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2001 12 17 05 13.00 +19 58.9 0.048 1.032 173.2 6.5 18.3
2001 12 18 05 17.11 +22 42.7 0.056 1.039 174.0 5.7 18.6
2001 12 19 05 20.40 +24 48.5 0.063 1.047 173.7 6.0 18.9
2001 12 20 05 23.11 +26 27.7 0.070 1.054 172.8 6.7 19.2
2001 12 21 05 25.38 +27 47.6 0.078 1.061 171.8 7.6 19.4
2001 12 22 05 27.32 +28 53.1 0.085 1.068 170.7 8.5 19.7
2001 12 23 05 29.00 +29 47.5 0.093 1.075 169.7 9.4 19.9
2001 12 24 05 30.48 +30 33.3 0.101 1.083 168.7 10.2 20.1
2001 12 25 05 31.80 +31 12.2 0.109 1.090 167.8 11.0 20.4
2001 12 26 05 32.99 +31 45.5 0.117 1.097 166.9 11.7 20.6
2001 12 27 05 34.08 +32 14.2 0.125 1.105 166.0 12.4 20.7
2001 12 28 05 35.08 +32 39.2 0.133 1.112 165.2 13.1 20.9
2001 12 29 05 36.02 +33 00.9 0.141 1.119 164.3 13.7 21.1
2001 12 30 05 36.90 +33 19.8 0.149 1.127 163.5 14.4 21.2
2001 12 31 05 37.74 +33 36.4 0.157 1.134 162.7 15.0 21.4
2002 01 01 05 38.54 +33 51.0 0.165 1.142 161.8 15.6 21.5
2002 01 02 05 39.31 +34 03.8 0.174 1.149 161.0 16.1 21.7
2002 01 03 05 40.06 +34 15.0 0.182 1.156 160.2 16.7 21.8
2002 01 04 05 40.79 +34 24.9 0.191 1.164 159.4 17.3 21.9
2002 01 05 05 41.51 +34 33.5 0.199 1.171 158.6 17.8 22.1
2002 01 06 05 42.23 +34 41.0 0.208 1.179 157.8 18.3 22.2
Timothy B. Spahr (C) Copyright 2001 MPC M.P.E.C. 2001-Y21
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