MPEC 2009-U115: 2009 US87
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M.P.E.C. 2009-U115 Issued 2009 Oct. 27, 19:54 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 US87
Observations:
K09U87S* C2009 10 23.42213 04 10 06.20 +19 05 16.4 20.2 V EU115G96
K09U87S C2009 10 23.42970 04 10 06.52 +19 05 17.0 20.4 V EU115G96
K09U87S C2009 10 23.43715 04 10 06.85 +19 05 17.8 21.2 V EU115G96
K09U87S C2009 10 23.44476 04 10 07.24 +19 05 18.9 21.0 V EU115G96
K09U87S C2009 10 25.42333 04 11 54.02 +19 09 08.4 20.9 V EU115691
K09U87S C2009 10 25.44051 04 11 54.71 +19 09 09.7 21.1 V EU115691
K09U87S C2009 10 25.45769 04 11 55.41 +19 09 11.1 21.0 V EU115691
K09U87S C2009 10 26.32054 04 12 39.95 +19 10 44.5 21.3 V EU115291
K09U87S C2009 10 26.32617 04 12 40.18 +19 10 45.4 21.2 V EU115291
K09U87S C2009 10 26.33179 04 12 40.38 +19 10 46.1 21.2 V EU115291
K09U87S C2009 10 27.44703 04 13 31.94 +19 12 39.5 20.1 R EU115H01
K09U87S C2009 10 27.45138 04 13 32.10 +19 12 39.8 20.2 R EU115H01
K09U87S C2009 10 27.45553 04 13 32.25 +19 12 40.0 20.3 R EU115H01
K09U87S C2009 10 27.46053 04 13 32.43 +19 12 40.4 20.2 R EU115H01
Observer details:
291 LPL/Spacewatch II. Observer T. H. Bressi. 1.8-m f/2.7 reflector + CCD.
691 Steward Observatory, Kitt Peak. Observer T. H. Bressi. 0.9-m f/3
reflector + CCD.
G96 Mt. Lemmon Survey. Observer A. D. Grauer. Measurers E. C. Beshore,
A. Boattini, G. J. Garradd, A. R. Gibbs, A. D. Grauer, R. E. Hill,
R. A. Kowalski, S. M. Larson, R. H. McNaught. 1.5-m reflector + CCD.
H01 Magdalena Ridge Observatory, Socorro. Observer W. H. Ryan. 2.4-m f/8.9
reflector + CCD.
Orbital elements:
2009 US87 Earth MOID = 0.2638 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 MPC
M 16.05499 (2000.0) P Q
n 0.46488183 Peri. 323.14375 +0.37895008 -0.92537202
a 1.6503435 Node 104.58599 +0.85129000 +0.34470732
e 0.2426707 Incl. 0.54088 +0.36290793 +0.15768160
P 2.12 H 21.6 G 0.15 U 8
Residuals in seconds of arc
091023 G96 0.3+ 0.3+ 091025 691 0.0 0.2- 091027 H01 0.0 0.2+
091023 G96 0.1- 0.1+ 091025 691 0.2- 0.4- 091027 H01 0.1+ 0.2+
091023 G96 0.4- 0.0 091026 291 0.0 0.1- 091027 H01 0.0 0.0
091023 G96 0.1+ 0.3+ 091026 291 0.1+ 0.1+ 091027 H01 0.1- 0.1+
091025 691 0.3+ 0.2+ 091026 291 0.2- 0.1+
Ephemeris:
2009 US87 a,e,i = 1.65, 0.24, 1 q = 1.2499
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2009 10 26 04 12.39 +19 10.3 0.322 1.278 147.8 24.5 20.8
2009 11 05 04 18.44 +19 24.3 0.292 1.265 156.4 18.3 20.4
2009 11 15 04 20.04 +19 32.9 0.272 1.255 166.0 11.0 20.0
2009 11 25 04 18.31 +19 40.6 0.264 1.251 176.2 3.0 19.5
2009 12 05 04 15.73 +19 52.1 0.267 1.250 172.6 5.8 19.7
2009 12 15 04 14.86 +20 11.4 0.281 1.255 162.4 13.7 20.1
2009 12 25 04 17.81 +20 40.7 0.306 1.264 153.0 20.7 20.6
2010 01 04 04 25.50 +21 18.5 0.341 1.277 144.7 26.4 21.0
2010 01 14 04 37.67 +22 00.6 0.385 1.294 137.4 31.0 21.4
2010 01 24 04 53.75 +22 42.0 0.438 1.314 131.0 34.4 21.8
Sonia Keys (C) Copyright 2009 MPC M.P.E.C. 2009-U115
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