MPEC 2014-F33 : 2009 HC21
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M.P.E.C. 2014-F33 Issued 2014 Mar. 24, 18:16 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 HC21
Revision to MPEC 2009-V33
Additional Observations:
K09H21C |C2014 03 23.10020 11 02 11.25 -34 20 51.6 22.3 VuEF033807
K09H21C |C2014 03 23.11132 11 02 10.12 -34 20 25.6 22.1 VuEF033807
K09H21C |C2014 03 23.12248 11 02 09.00 -34 19 59.7 22.0 VuEF033807
K09H21C |C2014 03 24.12485 11 00 38.53 -33 40 15.3 21.8 VuEF033807
K09H21C |C2014 03 24.13353 11 00 37.68 -33 39 54.5 22.0 VuEF033807
K09H21C |C2014 03 24.14278 11 00 36.75 -33 39 32.1 22.1 VuEF033807
Observer details:
807 Cerro Tololo. Observers T. Linder, R. Holmes. Measurers T. Linder,
R. Holmes, K. Baker. 0.41-m f/11 Ritchey-Chretien + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
140323 807 27.6+ 8.0- 140324 807 27.7+ 8.0- MPO166339 -0.0043 day
Orbital elements:
2009 HC21 Earth MOID = 0.0435 AU
Epoch 2014 May 23.0 TT = JDT 2456800.5 MPC
M 255.20965 (2000.0) P Q
n 0.78047869 Peri. 126.86656 +0.91601430 +0.35744894
a 1.1683206 Node 213.32815 -0.38166862 +0.91630828
e 0.1570707 Incl. 19.35199 +0.12347819 +0.18058072
P 1.26 H 22.2 G 0.15 U 1
Residuals in seconds of arc
090420 G96 0.3- 0.3- 090422 474 0.0 0.3+ 090513 291 0.6+ 0.1-
090420 G96 0.1+ 0.3- 090423 474 0.5+ 0.5- 090513 291 0.5+ 0.1-
090420 G96 0.2- 0.3- 090423 474 0.7+ 1.0- 090513 291 0.4+ 0.1-
090420 G96 0.1+ 0.2- 090423 474 0.3+ 0.9- 090521 H55 0.5- 0.3+
090420 G96 0.6- 0.2+ 090423 474 0.0 0.2- 090521 H55 0.4- 0.4+
090420 G96 0.1+ 0.8+ 090423 474 0.5+ 0.6- 090521 H55 0.4- 0.1+
090420 H01 0.1+ 0.3+ 090423 474 0.3+ 0.0 090528 291 0.0 0.4-
090420 H01 0.1- 0.2+ 090427 G96 0.0 0.1- 090528 291 0.6+ 0.2-
090420 H01 0.2+ 0.1+ 090427 G96 0.2+ 0.2- 090614 291 0.4+ 0.2-
090420 H01 0.1+ 0.2+ 090427 G96 0.2+ 0.1+ 090614 291 0.2- 0.3-
090420 J95 0.6+ 0.9+ 090427 291 0.3- 0.0 090614 291 0.3- 0.7-
090420 J95 0.1- 0.4+ 090427 291 0.4- 0.6+ 091101 568 0.0 0.2+
090420 J95 0.0 0.9+ 090427 291 0.5- 0.3+ 091101 568 0.1- 0.1+
090421 G96 0.1- 0.2- 090428 291 0.6- 0.6+ 091101 568 0.1+ 0.1+
090421 G96 0.2- 0.1+ 090428 291 0.1- 1.0+ 091109 568 0.1+ 0.0
090421 G96 0.1- 0.1- 090428 291 0.5- 0.0 091109 568 0.0 0.0
090421 G96 0.1+ 0.1- 090503 291 0.6- 0.3+ 140323 807 0.0 0.1-
090421 651 0.7+ 0.8+ 090503 291 0.5- 0.0 140323 807 0.1- 0.1+
090421 651 0.4+ 0.0 090503 291 0.0 0.7- 140323 807 0.0 0.1+
090421 651 0.0 0.1- 090503 474 0.3+ 0.1+ 140324 807 0.1+ 0.1+
090422 474 0.2+ 0.1- 090503 474 0.1+ 0.1+ 140324 807 0.2+ 0.0
090422 474 0.1+ 0.5- 090503 474 0.1+ 0.3+ 140324 807 0.0 0.0
090422 474 0.0 0.0 090503 474 0.1- 0.1+
Ephemeris:
2009 HC21 a,e,i = 1.17, 0.16, 19 q = 0.9848
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2014 02 22 11 45 16.2 -43 05 54 0.5272 1.3513 123.1 37.8 23.0
...
2014 03 09 11 25 18.1 -41 01 22 0.4501 1.3460 134.2 31.9 22.5
...
2014 03 17 11 11 58.8 -37 50 51 0.4171 1.3409 139.8 28.6 22.2
...
2014 03 23 11 02 20.0 -34 24 46 0.3976 1.3360 143.1 26.6 22.0
2014 03 24 11 00 49.5 -33 45 18 0.3948 1.3351 143.5 26.4 22.0
2014 03 25 10 59 21.3 -33 04 26 0.3922 1.3342 143.9 26.1 22.0
...
2014 03 31 10 51 32.8 -28 32 44 0.3802 1.3282 144.9 25.6 21.9
...
2014 04 08 10 44 33.6 -21 38 50 0.3739 1.3188 142.9 27.3 21.9
...
2014 04 23 10 43 23.0 -08 22 19 0.3917 1.2972 131.2 35.7 22.2
A. U. Tomatic (C) Copyright 2014 MPC M.P.E.C. 2014-F33
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