MPEC 2011-J34 : 2009 KQ4
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M.P.E.C. 2011-J34 Issued 2011 May 8, 19:13 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 https://www.minorplanetcenter.net/ ISSN 1523-6714
2009 KQ4
Revision to MPEC 2009-K51
Additional Observations:
K09K04Q |C2011 05 06.29530 19 55 09.75 -22 47 29.0 20.9 VoEJ034807
K09K04Q |C2011 05 06.30740 19 55 11.00 -22 47 37.0 20.7 VoEJ034807
K09K04Q |C2011 05 06.31948 19 55 12.27 -22 47 44.9 20.7 VoEJ034807
K09K04Q |C2011 05 08.34401 19 58 45.50 -23 10 26.1 20.9 VoEJ034807
K09K04Q |C2011 05 08.36445 19 58 47.42 -23 10 40.7 21.1 VoEJ034807
K09K04Q KC2011 05 08.37145319 58 48.37 -23 11 06.9 oEJ034H21
K09K04Q KC2011 05 08.38193119 58 49.32 -23 11 14.5 20.9 VoEJ034H21
K09K04Q |C2011 05 08.38522 19 58 49.29 -23 10 54.9 21.3 VoEJ034807
K09K04Q KC2011 05 08.39304919 58 50.37 -23 11 22.4 oEJ034H21
Observer details:
807 Cerro Tololo. Observers R. Holmes, T. Linder, V. Hoette. Measurers
T. Linder, R. Holmes. 0.41-m f/11 Ritchey-Chretien + CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers R. Holmes, T. Linder. 0.61-m f/4.5 astrograph + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
110506 807 42.7- 1.6- 110508 H21 44.0- 4.4- MPO159143 +0.010 day
Orbital elements:
2009 KQ4 Earth MOID = 0.1433 AU
Epoch 2011 Feb. 8.0 TT = JDT 2455600.5 MPC
M 344.64267 (2000.0) P Q
n 0.52127302 Peri. 135.42194 -0.96548783 +0.24186073
a 1.5290648 Node 58.80485 -0.25915299 -0.85517166
e 0.2631141 Incl. 6.48594 -0.02594189 -0.45845919
P 1.89 H 20.4 G 0.15 U 2
Residuals in seconds of arc
081230 703 0.4- 0.8+ 090526 G96 0.2- 0.2- 090529 291 0.2- 0.6+
081230 703 0.2- 0.7- 090526 G96 0.7+ 0.2+ 090612 291 0.0 0.1-
081230 703 0.1+ 1.0- 090526 G96 0.4+ 0.1- 090612 291 0.0 0.2+
081230 703 1.1- 0.5- 090526 G96 0.0 0.0 090612 291 0.3+ 0.4-
090130 703 0.7+ 0.0 090526 G96 0.1- 0.1- 110506 807 0.0 0.1-
090130 703 0.2+ 0.2- 090526 693 0.3+ 0.2+ 110506 807 0.1+ 0.3+
090130 703 0.0 0.5+ 090526 693 0.6+ 0.3- 110506 807 0.7+ 0.6+
090526 G96 0.1+ 0.0 090526 693 0.5+ 0.3+ 110508 807 0.5+ 0.4+
090526 G96 0.3- 0.3- 090526 693 0.2- 0.0 110508 807 0.4+ 0.1+
090526 G96 0.3+ 0.1- 090526 J95 0.8- 0.0 110508 H21 0.3+ 1.4-
090526 G96 0.2- 0.1- 090526 J95 0.2- 0.5- 110508 H21 0.4- 1.7-
090526 693 1.2+ 0.2- 090526 J95 0.1- 0.3+ 110508 807 0.8- 0.2+
090526 693 0.6+ 0.1- 090529 291 0.1- 0.4+ 110508 H21 0.5- 1.8-
090526 693 0.5+ 0.0 090529 291 0.4+ 0.3+
Ephemeris:
2009 KQ4 a,e,i = 1.53, 0.26, 6 q = 1.1267
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2011 04 08 18 45 47.4 -18 09 11 0.4662 1.1528 96.7 59.6 21.2
...
2011 04 23 19 26 42.6 -20 32 03 0.4495 1.1841 102.1 56.1 21.1
...
2011 05 01 19 44 49.9 -21 51 12 0.4399 1.2049 105.9 53.5 21.0
...
2011 05 07 19 56 24.7 -22 55 21 0.4324 1.2220 109.3 51.2 20.9
2011 05 08 19 58 09.6 -23 06 35 0.4311 1.2250 109.9 50.8 20.9
2011 05 09 19 59 51.2 -23 17 59 0.4299 1.2280 110.5 50.3 20.9
...
2011 05 15 20 08 51.0 -24 30 13 0.4224 1.2467 114.5 47.5 20.8
...
2011 05 23 20 17 29.2 -26 18 07 0.4131 1.2731 120.6 43.2 20.7
...
2011 06 07 20 21 37.3 -30 16 38 0.4010 1.3260 134.2 33.3 20.4
A. U. Tomatic (C) Copyright 2011 MPC M.P.E.C. 2011-J34
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