MPEC 2009-H31 : 2009 HF21
The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.A form allowing access to any MPEC is at the bottom of this page.
Read MPEC 2009-H30
Read MPEC 2009-H32
M.P.E.C. 2009-H31 Issued 2009 Apr. 21, 17:51 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 HF21
Observations:
K09H21F* C2009 04 20.38981 14 55 47.10 +00 20 21.8 18.3 V EH031703
K09H21F C2009 04 20.39705 14 56 04.59 +00 17 25.9 18.3 V EH031703
K09H21F C2009 04 20.40425 14 56 22.41 +00 14 26.8 18.8 V EH031703
K09H21F C2009 04 20.43067 14 57 25.59 +00 03 30.4 18.2 R EH031H01
K09H21F C2009 04 20.43348 14 57 32.49 +00 02 21.4 18.2 R EH031H01
K09H21F C2009 04 20.43705 14 57 41.30 +00 00 53.6 18.5 R EH031H01
K09H21F C2009 04 20.44083 14 57 50.63 -00 00 40.0 18.3 R EH031H01
K09H21F C2009 04 20.44140 14 57 53.06 -00 00 44.1 18.6 V EH031703
K09H21F C2009 04 20.44176 14 57 53.92 -00 00 53.4 18.2 V EH031703
K09H21F C2009 04 20.44221 14 57 55.00 -00 01 03.5 18.3 V EH031703
K09H21F C2009 04 20.48895 14 59 51.08 -00 20 19.5 18.4 V EH031703
K09H21F C2009 04 20.48941 14 59 52.27 -00 20 30.8 18.4 V EH031703
K09H21F C2009 04 20.48977 14 59 53.21 -00 20 39.5 18.6 V EH031703
K09H21F C2009 04 20.49093 14 59 55.96 -00 21 07.5 19.1 V EH031703
K09H21F C2009 04 20.49128 14 59 57.01 -00 21 17.6 19.1 V EH031703
K09H21F C2009 04 20.49174 14 59 58.12 -00 21 27.8 18.9 V EH031703
K09H21F C2009 04 20.49211 14 59 58.99 -00 21 37.1 18.9 V EH031703
K09H21F C2009 04 21.00291715 23 28.30 -04 02 07.7 EH031J95
K09H21F C2009 04 21.00515315 23 34.33 -04 03 06.7 EH031J95
K09H21F C2009 04 21.00736215 23 40.30 -04 04 05.5 18.4 R EH031J95
K09H21F C2009 04 21.33044 15 39 02.87 -06 25 59.5 18.7 R EH031651
K09H21F C2009 04 21.33097 15 39 04.35 -06 26 13.5 18.7 R EH031651
K09H21F C2009 04 21.33150 15 39 05.80 -06 26 27.7 18.8 R EH031651
K09H21F C2009 04 21.66394715 55 07.86 -08 46 14.7 18.1 R EH031474
K09H21F C2009 04 21.66452515 55 09.51 -08 46 30.0 18.3 R EH031474
K09H21F C2009 04 21.66498815 55 10.82 -08 46 42.1 18.2 R EH031474
K09H21F C2009 04 21.66556715 55 12.49 -08 46 57.9 18.3 R EH031474
Observer details:
474 Mount John Observatory, Lake Tekapo. Observer A. C. Gilmore. 1.0-m f/7.7
reflector + 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.
H01 Magdalena Ridge Observatory, Socorro. Observer W. H. Ryan. 2.4-m f/8.9
reflector + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain
+ CCD.
Orbital elements:
2009 HF21 Earth MOID = 0.0101 AU
Epoch 2009 June 18.0 TT = JDT 2455000.5 MPC
M 13.19266 (2000.0) P Q
n 0.27597551 Peri. 188.65752 -0.72595502 +0.68643308
a 2.3364456 Node 34.81390 -0.62645938 -0.63456028
e 0.5658231 Incl. 4.26051 -0.28379209 -0.35516600
P 3.57 H 26.1 G 0.15 U 7
Residuals in seconds of arc
090420 703 0.0 0.6- 090420 703 0.1- 0.1+ 090421 J95 0.2- 0.2+
090420 703 1.0- 0.5+ 090420 703 0.5- 0.2- 090421 J95 0.1+ 0.1-
090420 703 (3.9+ 2.3-) 090420 703 0.1+ 0.1- 090421 651 0.7+ 0.3-
090420 H01 0.3+ 0.1- 090420 703 0.6+ 0.1+ 090421 651 1.0+ 0.0
090420 H01 0.1+ 0.0 090420 703 1.8- 0.9+ 090421 651 0.9+ 0.1+
090420 H01 0.4+ 0.1+ 090420 703 0.8+ 0.5- 090421 474 0.4- 0.3-
090420 H01 0.5+ 0.4- 090420 703 0.1+ 0.7+ 090421 474 0.3- 0.1-
090420 703 0.7+ 0.4- 090420 703 0.8- 0.6+ 090421 474 0.4- 0.2+
090420 703 0.4+ 0.9- 090421 J95 0.2- 0.1+ 090421 474 0.1- 0.1-
Ephemeris:
2009 HF21 a,e,i = 2.34, 0.57, 4 q = 1.0144
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2009 04 19 14 03.31 +08 33.4 0.0234 1.026 160.0 19.6 19.0
2009 04 20 14 39.70 +02 57.4 0.0210 1.025 161.2 18.4 18.7
2009 04 21 15 23.18 -03 54.3 0.0194 1.023 156.8 22.7 18.7
2009 04 22 16 12.04 -11 19.4 0.0190 1.021 147.4 32.0 18.9
2009 04 23 17 02.41 -18 06.6 0.0198 1.020 136.4 42.9 19.3
2009 04 24 17 49.68 -23 22.2 0.0216 1.019 126.2 52.8 19.7
2009 04 25 18 30.71 -26 58.1 0.0242 1.018 117.9 60.9 20.2
2009 04 26 19 04.57 -29 15.4 0.0274 1.017 111.5 67.1 20.7
2009 04 27 19 31.86 -30 39.7 0.0309 1.016 106.7 71.6 21.1
2009 04 28 19 53.74 -31 30.8 0.0348 1.015 103.1 75.0 21.5
2009 04 29 20 11.37 -32 01.5 0.0388 1.015 100.5 77.4 21.8
Timothy B. Spahr (C) Copyright 2009 MPC M.P.E.C. 2009-H31
Read MPEC 2009-H30
Read MPEC 2009-H32
Enter an MPEC number in one of the following forms:
- 1997-B01 (the full form)
- J97B01 (the packed version of the full form)
- B01 (the abbreviated form)
