MPEC 2012-D31 : 2012 DG4
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M.P.E.C. 2012-D31 Issued 2012 Feb. 20, 22:50 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 DG4
Observations:
K12D04G* C2012 02 16.51494 10 29 45.402+11 06 34.01 20.6 wLED031F51
K12D04G C2012 02 16.52958 10 29 44.196+11 06 35.87 20.5 wLED031F51
K12D04G C2012 02 16.54420 10 29 42.997+11 06 37.69 20.6 wLED031F51
K12D04G C2012 02 16.55893 10 29 41.784+11 06 39.51 20.7 wLED031F51
K12D04G HC2012 02 18.41757 10 27 14.28 +11 10 35.7 oED031291
K12D04G HC2012 02 18.42071 10 27 14.01 +11 10 36.3 oED031291
K12D04G HC2012 02 18.42384 10 27 13.76 +11 10 36.3 oED031291
K12D04G C2012 02 19.17502 10 26 15.01 +11 12 10.6 19.4 RoED031H01
K12D04G C2012 02 19.18170 10 26 14.47 +11 12 11.5 19.7 RoED031H01
K12D04G C2012 02 19.19127 10 26 13.70 +11 12 12.7 19.7 RoED031H01
K12D04G C2012 02 19.19931 10 26 13.06 +11 12 13.7 19.9 RoED031H01
K12D04G C2012 02 19.30064 10 26 04.77 +11 12 27.2 20.8 VrED031703
K12D04G C2012 02 19.30881 10 26 04.16 +11 12 28.7 20.6 VrED031703
K12D04G C2012 02 19.31704 10 26 03.48 +11 12 28.9 20.2 VrED031703
K12D04G C2012 02 19.32573 10 26 02.68 +11 12 31.1 21.1 VrED031703
K12D04G HC2012 02 20.46445 10 24 33.28 +11 14 50.2 oED031291
K12D04G HC2012 02 20.46841 10 24 32.95 +11 14 50.3 oED031291
K12D04G HC2012 02 20.47235 10 24 32.66 +11 14 51.1 oED031291
K12D04G KC2012 02 20.89451 10 24 00.06 +11 15 41.2 20.1 RvED031B18
K12D04G KC2012 02 20.89801 10 23 59.79 +11 15 41.9 19.9 RvED031B18
K12D04G KC2012 02 20.90152 10 23 59.49 +11 15 41.8 20.1 RvED031B18
Observer details:
291 LPL/Spacewatch II. Observers J. V. Scotti, R. S. McMillan. 1.8-m f/2.7
reflector + CCD.
703 Catalina Sky Survey. Observer A. R. Gibbs. 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.
B18 Terskol. Observers M. Andreev, A. Sergeev, N. Parakhin, V. Kozlov,
N. Karpov. Measurer M. Andreev. 0.6-m f/12.8 Cassegrain + CCD.
F51 Pan-STARRS 1, Haleakala. Observers N. Primak, A. Schultz, S. Watters,
J. Thiel, T. Goggia. Measurer PS1 Science Consortium. 1.8-m
Ritchey-Chretien + CCD.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 reflector + CCD.
Orbital elements:
2012 DG4 Earth MOID = 0.3113 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5 MPC
M 33.30453 (2000.0) P Q
n 0.16395089 Peri. 74.56908 +0.62322787 -0.77877657
a 3.3061828 Node 336.42386 +0.63151289 +0.55500018
e 0.6253822 Incl. 10.27929 +0.46127919 +0.29237282
P 6.01 H 18.0 G 0.15 U 8
Residuals in seconds of arc
120216 F51 0.1+ 0.0 120219 H01 0.6+ 0.1- 120219 703 2.0- 1.0+
120216 F51 0.1+ 0.0 120219 H01 0.5+ 0.1- 120220 291 0.2+ 0.1+
120216 F51 0.1+ 0.0 120219 H01 0.5+ 0.1- 120220 291 0.0 0.2-
120216 F51 0.0 0.0 120219 H01 0.6+ 0.1- 120220 291 0.3+ 0.1+
120218 291 0.4+ 0.3- 120219 703 1.2- 0.3+ 120220 B18 0.0 0.2-
120218 291 0.2+ 0.1- 120219 703 0.4- 0.8+ 120220 B18 0.2+ 0.1+
120218 291 0.2+ 0.5- 120219 703 0.6- 0.1- 120220 B18 0.1- 0.5-
Ephemeris:
2012 DG4 a,e,i = 3.31, 0.63, 10 q = 1.2386
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2012 01 21 11 01 15.6 +10 23 24 1.2371 2.0725 137.6 18.7 21.0
...
2012 02 05 10 44 52.2 +10 42 11 1.2455 2.1858 156.7 10.3 20.8
...
2012 02 13 10 34 26.2 +10 58 57 1.2724 2.2458 167.2 5.6 20.7
...
2012 02 19 10 26 28.5 +11 11 52 1.3041 2.2905 175.1 2.1 20.6
2012 02 20 10 25 09.9 +11 13 56 1.3104 2.2980 176.4 1.5 20.6
2012 02 21 10 23 51.9 +11 15 58 1.3170 2.3054 177.6 1.0 20.6
...
2012 02 27 10 16 20.5 +11 26 59 1.3626 2.3498 174.2 2.5 20.8
...
2012 03 06 10 07 25.0 +11 37 32 1.4391 2.4086 164.1 6.5 21.2
...
2012 03 21 09 55 24.8 +11 41 08 1.6269 2.5173 146.3 12.7 21.8
A. U. Tomatic (C) Copyright 2012 MPC M.P.E.C. 2012-D31
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