MPEC 2009-A39 : 2005 PY16
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M.P.E.C. 2009-A39 Issued 2009 Jan. 6, 12:59 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://www.cfa.harvard.edu/iau/mpc.html ISSN 1523-6714
2005 PY16
Revision to MPEC 2005-P51
Additional Observations:
K05P16Y 2C2007 06 15.28080711 44 53.660+06 06 09.59 23.7 R EA039568
K05P16Y 2C2008 10 21.59049709 22 49.178+10 31 57.03 22.8 R EA039568
K05P16Y 2C2008 11 20.61603509 52 55.547+07 47 49.87 22.8 R EA039568
Observer details:
568 Mauna Kea. Observers D. J. Tholen, F. Bernardi, M. Micheli, G. T. Elliott.
Measurers D. J. Tholen, M. Micheli. 2.24-m University of Hawaii reflector,
8.2-m reflector.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
070615 568 0.3+ 0.5+ 081120 568 0.0 0.1+ MPO 97789 -0.00001 day
Orbital elements:
2005 PY16 PHA, Earth MOID = 0.0425 AU
Epoch 2008 Nov. 30.0 TT = JDT 2454800.5 MPC
M 68.91266 (2000.0) P Q
n 0.35486760 Peri. 193.37827 +0.99161641 +0.12310650
a 1.9758705 Node 159.42669 -0.10587289 +0.94826406
e 0.5245885 Incl. 6.41534 -0.07407986 +0.29264322
P 2.78 H 19.3 G 0.15 U 1
Residuals in seconds of arc
050801 568 0.1- 0.0 050929 291 0.3- 0.0 051207 F65 0.3- 0.0
050801 568 0.1- 0.1- 050929 291 0.2+ 0.8+ 051207 F65 0.1+ 0.2+
050801 568 0.0 0.0 050929 291 0.0 0.8- 051229 696 0.5+ 0.1+
050805 568 0.1+ 0.1+ 051010 291 0.1+ 0.5+ 051229 696 0.5+ 0.2+
050805 568 0.0 0.1+ 051010 291 0.6- 0.2+ 060125 291 1.7+ 0.2-
050805 568 0.1+ 0.1+ 051010 291 0.0 0.4+ 060125 291 0.0 0.1+
050810 568 0.1+ 0.0 051106 291 0.3- 0.3- 060125 291 0.1- 0.2+
050810 568 0.0 0.1+ 051106 291 0.1- 0.1+ 060125 696 1.1- 1.1+
050810 568 0.0 0.1+ 051106 291 0.1- 0.1- 060125 696 0.0 0.6-
050820 568 0.2+ 0.0 051111 568 0.1- 0.0 070615 568 0.2+ 0.4+
050820 568 0.0 0.0 051111 568 0.1- 0.0 081021 568 0.1+ 0.2+
050904 568 0.1- 0.0 051111 568 0.0 0.1- 081120 568 0.1- 0.1+
050904 568 0.1- 0.0 051207 F65 0.1- 0.1-
Ephemeris:
2005 PY16 a,e,i = 1.98, 0.52, 6 q = 0.9394
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2008 12 30 09 53.31 +07 36.9 1.535 2.298 130.5 19.0 23.0
2009 01 09 09 45.04 +08 25.6 1.490 2.350 142.8 14.6 22.8
2009 01 19 09 33.92 +09 32.8 1.467 2.399 155.8 9.7 22.7
2009 01 29 09 20.95 +10 52.6 1.472 2.446 169.0 4.4 22.5
2009 02 08 09 07.59 +12 16.3 1.508 2.491 174.6 2.1 22.4
2009 02 18 08 55.31 +13 35.5 1.574 2.535 162.7 6.7 22.8
Timothy B. Spahr (C) Copyright 2009 MPC M.P.E.C. 2009-A39
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