MPEC 2009-H29 : 2009 HD21
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M.P.E.C. 2009-H29 Issued 2009 Apr. 21, 17:45 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 HD21
Observations:
K09H21D* C2009 04 20.32627 13 16 53.54 +09 03 25.4 19.4 V EH029703
K09H21D C2009 04 20.33568 13 16 52.71 +09 03 38.2 19.5 V EH029703
K09H21D C2009 04 20.34503 13 16 51.96 +09 03 53.5 20.8 V EH029703
K09H21D C2009 04 20.35439 13 16 51.06 +09 04 05.8 20.4 V EH029703
K09H21D C2009 04 20.41318 13 16 45.94 +09 05 30.3 19.2 V EH029703
K09H21D C2009 04 20.42009 13 16 45.30 +09 05 38.1 19.9 V EH029703
K09H21D C2009 04 20.42706 13 16 44.76 +09 05 49.8 20.2 V EH029703
K09H21D C2009 04 20.43404 13 16 44.11 +09 06 01.9 19.7 V EH029703
K09H21D C2009 04 20.88114 13 16 07.03 +09 16 39.7 EH029J95
K09H21D IC2009 04 20.88757 13 16 06.54 +09 16 51.0 19.3 R EH029J95
K09H21D C2009 04 20.96590 13 15 59.75 +09 18 41.8 EH029J41
K09H21D C2009 04 20.97680 13 15 58.81 +09 18 57.3 19.5 C EH029J41
K09H21D C2009 04 21.21714 13 15 38.55 +09 24 44.5 20.1 V EH029G96
K09H21D C2009 04 21.22392 13 15 37.98 +09 24 54.2 20.1 V EH029G96
K09H21D C2009 04 21.23069 13 15 37.36 +09 25 04.3 20.0 V EH029G96
K09H21D C2009 04 21.23744 13 15 36.79 +09 25 13.5 19.6 V EH029G96
K09H21D C2009 04 21.28535 13 15 32.54 +09 26 23.4 19.2 R EH029651
K09H21D C2009 04 21.28680 13 15 32.42 +09 26 24.6 19.3 R EH029651
K09H21D C2009 04 21.29262 13 15 31.98 +09 26 34.4 19.2 R EH029651
K09H21D C2009 04 21.29895 13 15 31.31 +09 26 42.3 19.6 R EH029448
K09H21D C2009 04 21.31651 13 15 29.74 +09 27 06.8 19.4 R EH029448
K09H21D C2009 04 21.33448 13 15 28.15 +09 27 32.9 19.5 R EH029448
Observer details:
448 Desert Moon Observatory. Observer B. L. Stevens. 0.3-m
Schmidt-Cassegrain + CCD.
651 Grasslands Observatory, Tucson. Observer J. E. McGaha. 0.62-m f/5.1
Newtonian reflector + CCD.
703 Catalina Sky Survey. Observer A. Boattini. 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. 0.68-m Schmidt + CCD.
G96 Mt. Lemmon Survey. Observer A. Boattini. 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.
J41 Raheny. Observer D. Grennan. 0.36-m f/4.6 Schmidt-Cassegrain + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain
+ CCD.
Orbital elements:
2009 HD21 PHA, Earth MOID = 0.0017 AU
Epoch 2009 June 18.0 TT = JDT 2455000.5 MPC
M 327.94391 (2000.0) P Q
n 0.37032342 Peri. 139.62936 +0.76028944 +0.64958398
a 1.9205042 Node 179.85327 -0.64650135 +0.75679830
e 0.5185068 Incl. 17.90763 -0.06321371 +0.07278035
P 2.66 H 18.2 G 0.15 U 9
Residuals in seconds of arc
090420 703 0.3- 0.1- 090420 J95 0.4- 0.8- 090421 651 0.3- 0.5+
090420 703 0.3- 0.8- 090420 J95 0.6+ 1.3+ 090421 651 0.1- 0.4-
090420 703 0.7+ 1.0+ 090420 J41 0.8+ 0.2- 090421 651 1.0+ 1.1+
090420 703 0.4- 0.1- 090420 J41 0.9+ 0.3- 090421 448 0.1- 0.1+
090420 703 0.0 0.0 090421 G96 0.6- 0.6- 090421 448 0.3- 0.5-
090420 703 0.6- 2.1- 090421 G96 0.2- 0.6- 090421 448 0.4- 0.0
090420 703 0.4+ 0.4- 090421 G96 0.5- 0.2-
090420 703 0.3- 1.7+ 090421 G96 0.1- 0.7-
Ephemeris:
2009 HD21 a,e,i = 1.92, 0.52, 18 q = 0.9247
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2009 04 19 13 18.76 +08 31.5 0.839 1.813 159.1 11.4 19.8
2009 04 29 13 04.74 +12 22.5 0.813 1.744 146.6 18.5 19.9
2009 05 09 12 52.12 +15 35.8 0.808 1.674 133.8 25.8 20.0
2009 05 19 12 42.67 +17 58.4 0.817 1.601 121.9 32.5 20.2
2009 05 29 12 37.49 +19 28.7 0.834 1.528 111.2 38.2 20.3
2009 06 08 12 36.98 +20 12.5 0.851 1.453 101.9 43.1 20.3
2009 06 18 12 40.98 +20 18.1 0.865 1.378 93.8 47.4 20.4
2009 06 28 12 49.15 +19 52.2 0.870 1.303 87.0 51.2 20.4
2009 07 08 13 01.09 +19 00.2 0.865 1.229 81.1 54.8 20.3
2009 07 18 13 16.41 +17 45.4 0.847 1.159 76.3 58.5 20.3
2009 07 28 13 34.92 +16 08.3 0.816 1.093 72.3 62.3 20.2
2009 08 07 13 56.49 +14 08.0 0.771 1.034 69.2 66.6 20.1
2009 08 17 14 21.14 +11 39.7 0.713 0.985 67.0 71.2 19.9
2009 08 27 14 49.25 +08 34.5 0.645 0.949 65.7 76.0 19.8
2009 09 06 15 21.64 +04 37.3 0.571 0.929 65.4 80.7 19.6
2009 09 16 16 00.03 -00 34.8 0.495 0.926 66.4 84.3 19.5
2009 09 26 16 47.74 -07 27.2 0.428 0.941 69.3 85.6 19.2
2009 10 06 17 49.48 -15 58.7 0.378 0.972 74.8 83.1 18.9
2009 10 16 19 08.58 -24 37.6 0.359 1.017 82.9 76.6 18.7
2009 10 26 20 38.65 -30 18.5 0.377 1.073 91.6 67.8 18.6
2009 11 05 22 02.09 -31 32.4 0.431 1.137 98.4 59.6 18.8
2009 11 15 23 07.49 -29 41.6 0.512 1.207 102.3 53.2 19.1
2009 11 25 23 56.08 -26 30.7 0.611 1.280 103.9 48.5 19.5
2009 12 05 00 33.02 -22 56.6 0.724 1.354 103.7 45.0 19.9
2009 12 15 01 02.59 -19 22.3 0.849 1.429 102.2 42.3 20.3
2009 12 25 01 27.67 -15 55.9 0.983 1.504 99.8 40.1 20.6
2010 01 04 01 49.96 -12 41.0 1.125 1.578 96.7 38.2 21.0
2010 01 14 02 10.51 -09 38.6 1.274 1.651 93.1 36.5 21.3
2010 01 24 02 30.01 -06 49.1 1.429 1.722 89.1 34.8 21.6
2010 02 03 02 48.87 -04 12.9 1.588 1.792 84.8 33.2 21.9
Timothy B. Spahr (C) Copyright 2009 MPC M.P.E.C. 2009-H29
Read MPEC 2009-H28
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