MPEC 1999-Y17: 1999 YD
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M.P.E.C. 1999-Y17 Issued 1999 Dec. 20, 21:12 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.
Prepared using the Tamkin Foundation Computer Network
BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
1999 YD
Observations:
J99Y00D* C1999 12 17.36618 08 33 45.84 +50 44 32.1 16.5 704
J99Y00D C1999 12 17.38094 08 33 57.00 +50 42 04.7 16.5 704
J99Y00D C1999 12 17.39581 08 34 08.14 +50 39 35.4 16.5 704
J99Y00D C1999 12 17.41060 08 34 19.17 +50 37 06.2 16.3 704
J99Y00D C1999 12 17.42531 08 34 30.08 +50 34 36.9 16.0 704
J99Y00D C1999 12 18.03083 08 42 30.46 +48 54 39.4 15.7 R 946
J99Y00D C1999 12 18.03337 08 42 31.90 +48 54 17.7 946
J99Y00D C1999 12 18.35476 08 46 13.27 +48 04 24.5 16.8 704
J99Y00D C1999 12 18.36940 08 46 21.74 +48 02 13.1 17.2 704
J99Y00D C1999 12 18.38406 08 46 30.14 +48 00 00.7 16.8 704
J99Y00D C1999 12 18.39884 08 46 38.56 +47 57 46.6 16.8 704
J99Y00D C1999 12 18.41356 08 46 46.86 +47 55 32.1 17.0 704
J99Y00D C1999 12 19.42432 08 56 35.63 +45 28 52.0 16.5 704
J99Y00D C1999 12 19.42455 08 56 35.74 +45 28 50.3 16.5 704
J99Y00D C1999 12 19.44000 08 56 42.46 +45 26 42.6 16.8 704
J99Y00D C1999 12 19.44023 08 56 42.57 +45 26 40.9 16.7 704
J99Y00D C1999 12 19.44289 08 56 46.51 +45 26 16.9 670
J99Y00D C1999 12 19.45549 08 56 49.25 +45 24 33.3 16.9 704
J99Y00D C1999 12 19.45571 08 56 49.31 +45 24 32.5 17.4 704
J99Y00D C1999 12 19.47093 08 56 55.87 +45 22 25.1 16.8 704
J99Y00D C1999 12 19.47116 08 56 56.03 +45 22 23.8 16.6 704
J99Y00D C1999 12 19.48647 08 57 02.61 +45 20 14.7 16.7 704
J99Y00D C1999 12 19.48669 08 57 02.79 +45 20 13.3 16.7 704
J99Y00D C1999 12 19.51030 08 57 15.55 +45 17 01.5 670
J99Y00D C1999 12 19.55204 08 57 33.75 +45 11 10.3 670
J99Y00D C1999 12 19.83341 09 00 07.86 +44 31 55.7 046
J99Y00D C1999 12 19.83506 09 00 08.49 +44 31 43.6 046
J99Y00D C1999 12 19.83595 09 00 08.95 +44 31 37.4 046
J99Y00D C1999 12 19.83720 09 00 09.56 +44 31 28.3 16.7 R 046
J99Y00D C1999 12 19.83793 09 00 09.86 +44 31 22.2 046
J99Y00D C1999 12 19.83862 09 00 10.25 +44 31 17.9 046
J99Y00D C1999 12 19.83992 09 00 10.79 +44 31 08.5 16.6 R 046
J99Y00D C1999 12 19.90623 09 00 40.79 +44 22 56.5 557
J99Y00D C1999 12 19.90698 09 00 41.06 +44 22 49.9 557
J99Y00D C1999 12 19.90775 09 00 41.44 +44 22 45.1 557
J99Y00D C1999 12 19.90851 09 00 41.80 +44 22 39.5 557
J99Y00D C1999 12 19.90928 09 00 42.09 +44 22 33.3 557
J99Y00D tC1999 12 20.45334 09 04 32.82 +43 15 11.4 670
J99Y00D C1999 12 20.49994 09 04 48.48 +43 09 29.5 670
J99Y00D C1999 12 20.53634 09 05 00.89 +43 04 57.2 670
Observer details:
046 Klet. Observers J. Ticha, M. Tichy. 0.57-m f/5.2 reflector + CCD.
557 Ondrejov. Observer P. Kusnirak. 0.65-m f/3.6 reflector + CCD.
670 Camarillo. Observer J. E. Rogers. 0.30-m f/6.7 Helin Telescope + CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, F. Shelly,
M. Bezpalko, M. Elowitz, R. Huber. Measurers J. Stuart, H. Viggh,
R. Sayer, J. B. Evans. 1.0-m f/2.15 reflector + CCD.
946 Ametlla de Mar. Observer J. Nomen. 0.30-m f/5.0 reflector + CCD.
Orbital elements:
1999 YD PHA 0.021
Epoch 1999 Dec. 8.0 TT = JDT 2451520.5 Williams
M 0.69950 (2000.0) P Q
n 0.25297952 Peri. 61.48353 +0.32006922 -0.94738511
a 2.4759725 Node 9.85202 +0.86053751 +0.28889404
e 0.5937766 Incl. 1.38705 +0.39627123 +0.13784662
P 3.90 H 21.5 G 0.15
From 40 observations 1999 Dec. 17-20.
Ephemeris:
1999 YD a,e,i = 2.48, 0.59, 1 q = 1.0058
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 12 18 08 42.00 +48 59.5 0.049 1.020 136.3 41.8 16.6
1999 12 23 09 18.25 +38 42.9 0.067 1.033 136.1 41.4 17.3
1999 12 28 09 31.95 +32 40.7 0.086 1.049 138.1 38.8 17.8
2000 01 02 09 37.29 +28 54.3 0.107 1.070 141.5 34.9 18.2
2000 01 07 09 38.48 +26 23.7 0.129 1.093 146.0 30.2 18.6
2000 01 12 09 37.34 +24 38.3 0.153 1.119 150.9 25.3 18.8
2000 01 17 09 34.89 +23 21.4 0.177 1.148 156.2 20.2 19.0
2000 01 22 09 31.74 +22 23.2 0.204 1.179 161.7 15.2 19.2
2000 01 27 09 28.32 +21 37.5 0.232 1.212 167.1 10.4 19.4
2000 02 01 09 24.96 +21 00.1 0.264 1.247 172.2 6.2 19.6
2000 02 06 09 21.94 +20 28.0 0.298 1.283 175.2 3.7 19.8
2000 02 11 09 19.52 +19 59.2 0.335 1.320 173.1 5.1 20.2
2000 02 16 09 17.83 +19 32.3 0.376 1.358 168.6 8.2 20.6
2000 02 21 09 16.93 +19 06.3 0.420 1.397 163.8 11.4 21.0
2000 02 26 09 16.82 +18 40.6 0.467 1.436 159.0 14.3 21.4
2000 03 02 09 17.48 +18 14.9 0.519 1.476 154.3 16.9 21.8
2000 03 07 09 18.90 +17 48.7 0.574 1.516 149.8 19.2 22.2
Gareth V. Williams (C) Copyright 1999 MPC M.P.E.C. 1999-Y17
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