MPEC 2009-W61 : 2009 WC11
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M.P.E.C. 2009-W61 Issued 2009 Nov. 21, 13:35 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
2009 WC11
Observations:
K09W11C* C2009 11 20.32751 05 23 57.13 +20 58 58.2 20.7 V EW061691
K09W11C C2009 11 20.34526 05 23 58.74 +20 59 11.9 20.2 V EW061691
K09W11C C2009 11 20.36300 05 24 00.35 +20 59 25.9 20.9 V EW061691
K09W11C C2009 11 20.41062 05 24 04.58 +21 00 00.5 19.7 R EW061H01
K09W11C C2009 11 20.41552 05 24 05.03 +21 00 04.2 19.5 R EW061H01
K09W11C C2009 11 20.42036 05 24 05.48 +21 00 07.8 19.5 R EW061H01
K09W11C C2009 11 20.43573 05 24 07.01 +21 00 20.7 EW061291
K09W11C C2009 11 20.43968 05 24 07.38 +21 00 23.7 EW061291
K09W11C C2009 11 20.86473 05 24 54.00 +21 05 38.0 19.6 V EW061A50
K09W11C C2009 11 20.86584 05 24 54.07 +21 05 38.8 20.2 V EW061A50
K09W11C C2009 11 20.86712 05 24 54.16 +21 05 39.6 20.1 V EW061A50
K09W11C C2009 11 20.86933 05 24 54.33 +21 05 41.6 21.0 V EW061A50
K09W11C C2009 11 20.87043 05 24 54.43 +21 05 42.6 20.5 V EW061A50
K09W11C C2009 11 20.87153 05 24 54.53 +21 05 43.5 20.1 V EW061A50
K09W11C C2009 11 21.28719 05 25 37.43 +21 11 12.7 20.6 V EW061291
K09W11C C2009 11 21.29145 05 25 37.83 +21 11 16.2 20.3 V EW061291
K09W11C C2009 11 21.29585 05 25 38.21 +21 11 19.8 20.4 V EW061291
K09W11C C2009 11 21.32744 05 25 40.44 +21 11 40.6 20.0 R EW061H36
K09W11C C2009 11 21.33051 05 25 40.73 +21 11 42.6 19.6 R EW061H36
K09W11C C2009 11 21.33318 05 25 41.38 +21 11 48.0 19.5 R EW061H01
K09W11C C2009 11 21.33358 05 25 41.01 +21 11 44.8 19.7 R EW061H36
K09W11C C2009 11 21.33734 05 25 41.75 +21 11 51.2 19.6 R EW061H01
K09W11C C2009 11 21.34336 05 25 42.28 +21 11 55.8 19.7 R EW061H01
Observer details:
291 LPL/Spacewatch II. Observers T. H. Bressi, M. T. Read. 1.8-m f/2.7
reflector + CCD.
691 Steward Observatory, Kitt Peak. Observer T. H. Bressi. 0.9-m f/3
reflector + CCD.
A50 Andrushivka Astronomical Observatory. Observers Y. Ivashchenko,
P. Kyrylenko, P. Ostafijchuk, Y. Kazmirchuk. Measurer Y. Ivashchenko.
0.6-m reflector + CCD.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 reflector + CCD.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.56-m reflector + CCD.
Orbital elements:
2009 WC11 Earth MOID = 0.2152 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 MPC
M 13.96648 (2000.0) P Q
n 0.25729006 Peri. 340.55157 +0.59210201 -0.80493069
a 2.4482403 Node 73.12353 +0.74462491 +0.52808711
e 0.5085070 Incl. 2.32094 +0.30813787 +0.27057455
P 3.83 H 21.9 G 0.15 U 8
Residuals in seconds of arc
091120 691 0.3+ 0.1+ 091120 A50 1.2+ 0.1+ 091121 291 0.2- 0.2+
091120 691 0.0 0.1- 091120 A50 0.7+ 0.0 091121 H36 0.3+ 0.0
091120 691 0.2- 0.1+ 091120 A50 0.2+ 0.2- 091121 H36 0.5+ 0.4-
091120 H01 0.2+ 0.0 091120 A50 0.4- 0.0 091121 H01 0.2+ 0.1+
091120 H01 0.2+ 0.0 091120 A50 0.4- 0.1+ 091121 H36 0.6+ 0.5-
091120 H01 0.2+ 0.0 091120 A50 0.5- 0.1+ 091121 H01 0.2+ 0.1+
091120 291 0.2- 0.1- 091121 291 0.3- 0.0 091121 H01 0.2+ 0.0
091120 291 0.1- 0.0 091121 291 0.0 0.1+
Ephemeris:
2009 WC11 a,e,i = 2.45, 0.51, 2 q = 1.2033
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2009 11 15 05 13.74 +19 49.7 0.235 1.204 153.3 21.6 20.2
2009 11 25 05 31.54 +21 57.8 0.239 1.214 159.3 16.7 20.1
2009 12 05 05 43.76 +23 52.6 0.253 1.233 166.5 10.7 20.0
2009 12 15 05 51.37 +25 26.1 0.279 1.262 174.6 4.2 20.0
2009 12 25 05 56.46 +26 33.8 0.316 1.299 174.9 3.8 20.3
2010 01 04 06 01.33 +27 15.9 0.367 1.342 166.4 9.9 21.0
2010 01 14 06 07.42 +27 36.5 0.431 1.392 157.7 15.5 21.6
Timothy B. Spahr (C) Copyright 2009 MPC M.P.E.C. 2009-W61
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