MPEC 2012-H12 : 2012 HL
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M.P.E.C. 2012-H12 Issued 2012 Apr. 17, 14:40 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
2012 HL
Observations:
K12H00L* C2012 04 16.26166 12 01 14.48 -10 08 08.7 19.1 VrEH012703
K12H00L C2012 04 16.26722 12 01 14.84 -10 07 49.5 18.7 VrEH012703
K12H00L C2012 04 16.27282 12 01 15.16 -10 07 30.7 19.2 VrEH012703
K12H00L C2012 04 16.27846 12 01 15.49 -10 07 09.7 19.0 VrEH012703
K12H00L C2012 04 16.30399 12 01 17.07 -10 05 40.3 19.1 VrEH012703
K12H00L C2012 04 16.30899 12 01 17.25 -10 05 23.0 19.3 VrEH012703
K12H00L C2012 04 16.31401 12 01 17.61 -10 05 06.2 18.8 VrEH012703
K12H00L C2012 04 16.31910 12 01 17.90 -10 04 48.6 19.1 VrEH012703
K12H00L QC2012 04 16.51294 12 01 36.15 -09 52 17.8 rEH012E12
K12H00L QC2012 04 16.51691 12 01 36.38 -09 52 03.2 rEH012E12
K12H00L KC2012 04 16.88618 12 02 09.32 -09 31 14.3 18.8 VvEH012I93
K12H00L KC2012 04 16.89159 12 02 09.69 -09 30 54.7 18.6 VvEH012I93
K12H00L KC2012 04 16.89878 12 02 10.16 -09 30 28.2 19.0 VvEH012I93
K12H00L KC2012 04 16.90418 12 02 10.54 -09 30 08.3 18.9 VvEH012I93
K12H00L |C2012 04 17.01134 12 02 22.27 -09 22 10.5 19.3 VoEH012807
K12H00L |C2012 04 17.01493 12 02 22.51 -09 21 57.3 19.6 VoEH012807
K12H00L |C2012 04 17.01851 12 02 22.76 -09 21 44.3 19.7 VoEH012807
K12H00L C2012 04 17.13222 12 02 32.84 -09 15 53.1 20.2 RoEH012G48
K12H00L C2012 04 17.13475 12 02 33.11 -09 15 42.9 20.2 RoEH012G48
K12H00L KC2012 04 17.13891 12 02 32.41 -09 15 35.2 19.1 RuEH012H36
K12H00L C2012 04 17.13986 12 02 33.50 -09 15 24.9 20.1 RoEH012G48
K12H00L KC2012 04 17.14215 12 02 32.63 -09 15 23.5 19.1 RuEH012H36
K12H00L KC2012 04 17.14529 12 02 32.86 -09 15 11.8 19.4 RuEH012H36
K12H00L KC2012 04 17.14841 12 02 33.11 -09 15 00.1 19.0 RuEH012H36
K12H00L KC2012 04 17.26612812 02 40.76 -09 07 37.1 19.3 VrEH012H21
K12H00L KC2012 04 17.26962912 02 41.04 -09 07 24.0 19.0 VrEH012H21
K12H00L KC2012 04 17.27348012 02 41.31 -09 07 09.0 18.9 VrEH012H21
Observer details:
703 Catalina Sky Survey. Observer A. D. Grauer. Measurers J. D. Ahern,
E. C. Beshore, A. Boattini, G. J. Garradd, A. R. Gibbs, P. Tricarico,
A. D. Grauer, R. E. Hill, R. A. Kowalski, S. M. Larson, R. H. McNaught.
0.68-m Schmidt + CCD.
807 Cerro Tololo. Observers R. Holmes, T. Linder, V. Hoette. Measurers
R. Holmes, T. Linder. 0.41-m f/11 Ritchey-Chretien + CCD.
E12 Siding Spring Survey. Observer R. H. McNaught. 0.5-m Uppsala Schmidt
+ CCD.
G48 Doc Greiner Research Obs., Rancho Hildalgo. Observer M. Mills. 0.40-m
f/10 Schmidt-Cassegrain + CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers L. Buzzi, H. Devore, S. Foglia, T. Vorobjov. 0.61-m f/4.0
astrograph + CCD.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.56-m reflector + CCD.
I93 St Pardon de Conques. Observer F. Losse. 0.40-m f/5.0 reflector + CCD.
Orbital elements:
2012 HL Earth MOID = 0.0495 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5 MPC
M 335.78305 (2000.0) P Q
n 0.32281865 Peri. 40.39128 -0.33262911 +0.93948063
a 2.1045713 Node 210.44344 -0.90161011 -0.34231720
e 0.5244496 Incl. 9.32044 -0.27650875 -0.01396686
P 3.05 H 22.5 G 0.15 U 7
Residuals in seconds of arc
120416 703 0.7- 0.2+ 120416 E12 0.2+ 0.1+ 120417 G48 0.6+ 0.8+
120416 703 0.1- 0.1+ 120416 I93 0.3+ 0.0 120417 H36 0.1- 0.1+
120416 703 0.2- 0.6- 120416 I93 0.3+ 0.1- 120417 G48 1.1+ 0.1-
120416 703 0.2- 0.7+ 120416 I93 0.0 0.2+ 120417 H36 0.2- 0.2-
120416 703 0.9+ 0.8+ 120416 I93 0.2+ 0.3+ 120417 H36 0.0 0.2-
120416 703 0.9- 0.6+ 120417 807 0.0 0.2+ 120417 H36 0.5+ 0.1-
120416 703 0.1- 0.2- 120417 807 0.2- 0.3+ 120417 H21 0.6- 0.1-
120416 703 0.3- 0.5- 120417 807 0.2- 0.1+ 120417 H21 0.3- 0.3-
120416 E12 0.3+ 0.4- 120417 G48 0.7- 0.1- 120417 H21 0.5- 0.0
Ephemeris:
2012 HL a,e,i = 2.10, 0.52, 9 q = 1.0008
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2012 03 18 11 53 36.6 -20 28 43 0.3282 1.3063 158.6 16.2 21.5
...
2012 04 02 11 52 48.5 -18 14 14 0.2164 1.2066 161.4 15.3 20.4
...
2012 04 10 11 55 21.2 -14 49 55 0.1655 1.1581 159.3 17.8 19.8
...
2012 04 16 12 00 53.8 -10 22 23 0.1308 1.1245 156.3 21.0 19.4
2012 04 17 12 02 18.4 -09 23 23 0.1253 1.1192 155.7 21.7 19.3
2012 04 18 12 03 54.0 -08 19 04 0.1199 1.1140 155.0 22.4 19.2
...
2012 04 24 12 18 45.0 +00 36 55 0.08995 1.0846 149.9 27.7 18.7
...
2012 05 02 13 08 00.5 +24 07 16 0.06019 1.0511 134.9 42.8 18.2
...
2012 05 17 19 36 13.6 +60 16 31 0.07620 1.0101 86.9 88.8 20.1
A. U. Tomatic (C) Copyright 2012 MPC M.P.E.C. 2012-H12
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