MPEC 2011-H25 : 2011 HF
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M.P.E.C. 2011-H25 Issued 2011 Apr. 23, 18:20 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
2011 HF
Observations:
K11H00F* C2011 04 22.16366 12 55 50.38 -05 26 42.2 20.8 VoEH025691
K11H00F C2011 04 22.20631 12 55 46.20 -05 25 36.3 20.6 VoEH025691
K11H00F C2011 04 22.24898 12 55 42.01 -05 24 29.7 20.4 VoEH025691
K11H00F KC2011 04 22.92589 12 54 39.88 -05 07 04.6 uEH025J95
K11H00F KC2011 04 22.96050 12 54 36.55 -05 06 12.1 20.3 RuEH025J95
K11H00F |C2011 04 23.08147 12 54 25.92 -05 02 43.5 21.1 VoEH025807
K11H00F |C2011 04 23.09493 12 54 24.60 -05 02 22.9 21.1 VoEH025807
K11H00F |C2011 04 23.10056 12 54 24.07 -05 02 14.5 20.9 VoEH025807
K11H00F KC2011 04 23.26695 12 54 08.30 -04 58 16.2 20.8 RuEH025H36
K11H00F KC2011 04 23.31737 12 54 03.58 -04 56 57.7 20.6 RuEH025H36
K11H00F C2011 04 23.34439 12 54 01.19 -04 56 15.3 20.7 VoEH025291
K11H00F C2011 04 23.34807 12 54 00.82 -04 56 09.5 20.7 VoEH025291
Observer details:
291 LPL/Spacewatch II. Observer R. S. McMillan. 1.8-m f/2.7 reflector + CCD.
691 Steward Observatory, Kitt Peak. Observer R. S. McMillan. 0.9-m f/3
reflector + CCD.
807 Cerro Tololo. Observers R. Holmes, T. Linder, V. Hoette. Measurer
R. Holmes. 0.41-m f/11 Ritchey-Chretien + CCD.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.56-m reflector + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain
+ CCD.
Orbital elements:
2011 HF PHA, Earth MOID = 0.0254 AU
Epoch 2011 Feb. 8.0 TT = JDT 2455600.5 MPC
M 188.93285 (2000.0) P Q
n 0.66224150 Peri. 143.19373 +0.97435059 +0.21133226
a 1.3035423 Node 204.94124 -0.22388999 +0.94498772
e 0.2414990 Incl. 10.56651 +0.02267593 +0.24967357
P 1.49 H 20.7 G 0.15 U 9
Residuals in seconds of arc
110422 691 0.1+ 0.1- 110422 J95 0.1+ 0.5- 110423 H36 1.5- 0.1-
110422 691 0.1- 0.2- 110423 807 0.2- 0.3+ 110423 H36 0.0 0.5+
110422 691 0.1- 0.2+ 110423 807 0.4- 0.1+ 110423 291 0.2+ 0.2-
110422 J95 0.3+ 0.5+ 110423 807 0.2- 0.2- 110423 291 0.0 0.0
Ephemeris:
2011 HF a,e,i = 1.30, 0.24, 11 q = 0.9887
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2011 03 24 13 39 12.8 -16 28 22 0.6180 1.5735 153.3 16.5 21.5
...
2011 04 08 13 18 49.4 -11 28 31 0.5480 1.5473 174.3 3.7 20.7
...
2011 04 16 13 05 42.5 -08 07 16 0.5306 1.5310 172.7 4.8 20.7
...
2011 04 22 12 56 05.0 -05 30 48 0.5268 1.5177 163.7 10.7 20.9
2011 04 23 12 54 33.0 -05 04 58 0.5269 1.5154 162.2 11.7 20.9
2011 04 24 12 53 02.7 -04 39 19 0.5272 1.5131 160.7 12.7 21.0
...
2011 04 30 12 44 44.2 -02 11 13 0.5332 1.4986 151.9 18.5 21.2
...
2011 05 08 12 36 11.1 +00 42 14 0.5507 1.4780 140.9 25.5 21.4
...
2011 05 23 12 29 32.5 +04 29 04 0.6035 1.4354 123.3 36.1 21.9
Timothy B. Spahr (C) Copyright 2011 MPC M.P.E.C. 2011-H25
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