MPEC 2009-R42 : 2009 RD1
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M.P.E.C. 2009-R42 Issued 2009 Sept. 12, 12:38 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 RD1
Observations:
K09R01D*QC2009 09 11.62614 21 44 25.72 -15 37 41.3 18.4 V ER042E12
K09R01D QC2009 09 11.64337 21 44 27.96 -15 37 15.5 18.5 V ER042E12
K09R01D QC2009 09 11.65195 21 44 29.03 -15 37 03.0 18.6 V ER042E12
K09R01D C2009 09 12.10094 21 45 34.52 -15 26 13.0 18.6 C ER042I21
K09R01D C2009 09 12.10500 21 45 35.93 -15 26 53.7 18.6 R ER042H26
K09R01D C2009 09 12.10742 21 45 36.18 -15 26 50.8 18.3 R ER042H26
K09R01D C2009 09 12.10975 21 45 36.60 -15 26 47.6 18.1 R ER042H26
K09R01D C2009 09 12.11206 21 45 36.80 -15 26 43.4 18.3 R ER042H26
K09R01D C2009 09 12.11440 21 45 37.14 -15 26 39.9 18.5 R ER042H26
K09R01D C2009 09 12.11674 21 45 37.44 -15 26 36.6 18.3 R ER042H26
K09R01D C2009 09 12.12488 21 45 37.53 -15 25 39.4 17.6 C ER042I21
K09R01D C2009 09 12.29168 21 46 00.76 -15 22 16.5 18.4 R ER042854
K09R01D C2009 09 12.29551 21 46 01.18 -15 22 10.8 18.4 R ER042854
K09R01D C2009 09 12.29936 21 46 01.69 -15 22 05.0 18.7 R ER042854
K09R01D QC2009 09 12.39414 21 46 17.93 -15 19 01.2 18.3 R ER042E12
Observer details:
854 Sabino Canyon Observatory, Tucson. Observer J. E. McGaha. 0.36-m f/10.0
Schmidt-Cassegrain + CCD.
E12 Siding Spring Survey. Observers R. H. McNaught, G. J. Garradd. 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. 0.5-m Uppsala
Schmidt + CCD.
H26 Doc Greiner Research Observatory, Janesvillle. Observer M. Mills. 0.4-m
f/8 Schmidt-Cassegrain + CCD.
I21 El Condor Observatory, Cordoba. Observer W. Robledo. Measurer
C. Montivero. 0.20-m f/3.9 Schmidt-Cassegrain + CCD.
Orbital elements:
2009 RD1 Earth MOID = 0.1853 AU
Epoch 2009 June 18.0 TT = JDT 2455000.5 MPC
M 337.75444 (2000.0) P Q
n 0.23098369 Peri. 0.93792 +0.99550227 +0.09464822
a 2.6307637 Node 353.62661 -0.08715987 +0.89797841
e 0.5471353 Incl. 2.12550 -0.03712672 +0.42974003
P 4.27 H 20.7 G 0.15 U 8
Residuals in seconds of arc
090911 E12 0.0 0.0 090912 H26 0.7- 0.3- 090912 I21 0.1- 0.9-
090911 E12 0.3+ 0.2+ 090912 H26 1.0+ 0.5- 090912 854 0.4+ 0.1-
090911 E12 0.3- 0.1- 090912 H26 0.4- 0.4+ 090912 854 0.6- 0.1-
090912 I21 0.1+ 0.5+ 090912 H26 0.1+ 0.5+ 090912 854 0.4- 0.0
090912 H26 0.2+ 0.2+ 090912 H26 0.0 0.4+ 090912 E12 0.1+ 0.0
Ephemeris:
2009 RD1 a,e,i = 2.63, 0.55, 2 q = 1.1914
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2009 09 06 21 32.22 -17 44.1 0.214 1.206 156.1 19.8 18.7
2009 09 16 21 55.22 -13 47.5 0.207 1.194 153.0 22.5 18.7
2009 09 26 22 23.12 -09 05.5 0.211 1.192 151.3 23.8 18.8
2009 10 06 22 53.49 -04 10.1 0.227 1.202 150.2 24.4 19.0
2009 10 16 23 23.59 +00 23.3 0.255 1.223 148.9 24.9 19.3
2009 10 26 23 51.84 +04 15.3 0.297 1.253 147.0 25.6 19.7
2009 11 05 00 17.75 +07 23.5 0.352 1.293 144.1 26.7 20.2
2009 11 15 00 41.39 +09 54.5 0.420 1.340 140.5 28.0 20.7
2009 11 25 01 03.33 +11 58.6 0.502 1.393 136.3 29.3 21.2
2009 12 05 01 24.12 +13 44.4 0.597 1.452 131.6 30.5 21.7
Timothy B. Spahr (C) Copyright 2009 MPC M.P.E.C. 2009-R42
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