MPEC 2012-G34 : 2003 GH21
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M.P.E.C. 2012-G34 Issued 2012 Apr. 13, 03:10 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
2003 GH21
Revision to MPEC 2003-G37
Additional Observations:
K03G21H C2012 04 11.29614 09 54 44.731+01 39 08.22 20.4 gLEG034F51
K03G21H C2012 04 11.30845 09 54 48.334+01 40 04.60 20.6 gLEG034F51
K03G21H KC2012 04 11.96619 09 58 08.98 +02 29 33.3 uEG034J95
K03G21H KC2012 04 11.97099 09 58 10.44 +02 29 54.2 uEG034J95
K03G21H KC2012 04 11.97506 09 58 11.65 +02 30 12.4 19.6 RuEG034J95
K03G21H KC2012 04 11.99045 09 58 15.73 +02 31 25.7 19.7 RtEG034204
K03G21H FC2012 04 12.00298 09 58 19.59 +02 32 20.2 tEG034204
K03G21H KC2012 04 12.19348309 59 18.11 +02 46 36.0 19.9 VrEG034H21
K03G21H KC2012 04 12.19847809 59 19.58 +02 46 58.8 19.9 VrEG034H21
K03G21H C2012 04 12.20133 09 59 21.14 +02 47 16.4 cEG034926
K03G21H C2012 04 12.20194 09 59 21.34 +02 47 20.2 cEG034926
K03G21H C2012 04 12.20257 09 59 21.53 +02 47 22.3 cEG034926
K03G21H KC2012 04 12.20283 09 59 21.57 +02 47 22.7 19.8 RoEG034291
K03G21H C2012 04 12.20318 09 59 21.68 +02 47 25.4 cEG034926
K03G21H C2012 04 12.20380 09 59 21.85 +02 47 27.4 cEG034926
K03G21H KC2012 04 12.20410 09 59 21.93 +02 47 28.0 19.2 RoEG034291
K03G21H C2012 04 12.20442 09 59 22.05 +02 47 30.6 cEG034926
K03G21H KC2012 04 12.20537 09 59 22.32 +02 47 33.5 19.8 RoEG034291
K03G21H KC2012 04 12.20690409 59 22.09 +02 47 36.0 19.9 VrEG034H21
K03G21H C2012 04 12.20975 09 59 23.57 +02 47 54.4 cEG034926
K03G21H C2012 04 12.21037 09 59 23.74 +02 47 56.5 cEG034926
K03G21H C2012 04 12.21098 09 59 23.95 +02 47 59.2 cEG034926
K03G21H C2012 04 12.21161 09 59 24.15 +02 48 02.0 cEG034926
K03G21H C2012 04 12.21223 09 59 24.34 +02 48 04.9 cEG034926
K03G21H C2012 04 12.21282 09 59 24.46 +02 48 07.0 cEG034926
K03G21H KC2012 04 12.82793 10 02 32.01 +03 33 13.5 19.7 VvEG034I93
K03G21H KC2012 04 12.83511 10 02 34.05 +03 33 44.5 19.9 VvEG034I93
K03G21H KC2012 04 12.84221 10 02 36.17 +03 34 15.5 19.3 VvEG034I93
K03G21H KC2012 04 12.86945 10 02 44.17 +03 36 10.6 uEG034J95
K03G21H KC2012 04 12.87630 10 02 46.16 +03 36 40.8 20.1 RuEG034J95
Observer details:
204 Schiaparelli Observatory. Observer L. Buzzi. 0.38-m f/6.8 reflector
+ CCD.
291 LPL/Spacewatch II. Observer T. H. Bressi. 1.8-m f/2.7 reflector + CCD.
926 Tenagra II Observatory. Observers S. Abe, J. K. Guo, N. Panwar,
W. P. Chen, W. H. Ip. Measurer S. Abe. 0.81-m f/7 Ritchey-Chretien + 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.
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.
I93 St Pardon de Conques. Observer F. Losse. 0.40-m f/5.0 reflector + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain
+ CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or integer in degrees), reference and Delta-T
120411 F51 121- 4+ 120412 J95 119- 5+ MPO 48364 +41 day
Orbital elements:
2003 GH21 Earth MOID = 0.1597 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5 MPC
M 9.32988 (2000.0) P Q
n 0.54600390 Peri. 311.79077 -0.85392484 -0.50888058
a 1.4825370 Node 198.47193 +0.51749509 -0.85243352
e 0.2618547 Incl. 20.09731 -0.05487443 -0.11999024
P 1.81 H 21.4 G 0.15 U 4
Residuals in seconds of arc
030407 704 0.1- 0.0 030410 704 0.0 0.7- 030424 185 0.0 0.3-
030407 704 0.3- 0.0 030410 704 0.3+ 0.6+ 030424 185 0.1- 0.4-
030407 704 0.5+ 0.0 030410 704 0.2- 0.3- 030424 185 0.6+ 0.1+
030407 704 0.6- 0.3+ 030410 704 0.7- 0.2- 030424 185 0.0 0.1-
030407 704 0.5- 0.2- 030410 704 0.2- 0.2- 120411 F51 0.4- 0.2-
030407 J95 0.3- 0.9+ 030411 246 0.2+ 0.3+ 120411 F51 0.3- 0.2-
030407 J95 0.0 0.6- 030411 246 0.1- 0.2- 120411 J95 0.1- 0.0
030407 J95 0.3- 0.9- 030411 246 0.0 0.7- 120411 J95 0.4+ 0.6-
030407 636 0.3- 1.7+ 030411 246 1.1- 0.3- 120411 J95 0.4+ 0.7-
030407 620 0.5- 0.0 030411 246 0.2- 0.0 120411 204 (2.1- 1.2+)
030407 636 0.2- 1.6+ 030411 246 0.3+ 0.0 120412 204 0.5- 0.4-
030407 636 0.0 0.6+ 030414 413 0.6+ 0.2- 120412 H21 0.7- 0.3-
030407 620 0.0 0.2- 030414 413 0.3+ 0.2+ 120412 H21 0.7- 0.2+
030407 620 0.2+ 0.5+ 030420 941 0.0 0.2+ 120412 926 0.1+ 0.4+
030408 854 0.1+ 0.2+ 030420 941 0.3+ 0.0 120412 926 0.5+ 1.5+
030408 854 0.5- 0.0 030420 941 0.6+ 0.3+ 120412 926 0.6+ 0.8+
030408 854 0.4+ 0.3- 030420 941 0.6+ 0.4+ 120412 291 0.4- 0.3+
030408 704 0.0 0.6+ 030420 941 0.9+ 0.4+ 120412 926 0.1+ 1.2+
030408 704 1.5+ 0.2- 030420 246 0.1- 0.0 120412 926 0.0 0.4+
030408 704 0.1+ 0.5- 030420 246 1.2- 0.4+ 120412 291 0.6- 0.0
030408 704 0.5+ 0.2+ 030420 246 0.4- 0.5- 120412 926 0.3+ 0.9+
030408 670 0.9+ 0.9+ 030420 246 0.1- 0.7- 120412 291 0.3- 0.2-
030408 670 1.2- 1.8+ 030420 246 0.8- 0.3+ 120412 H21 0.2- 0.1-
030408 587 0.3- 1.6- 030421 413 0.1- 0.1+ 120412 926 0.2- 0.9+
030408 587 0.0 0.6- 030421 413 0.2- 0.1- 120412 926 0.4- 0.3+
030408 587 0.5+ 0.0 030422 413 0.0 0.0 120412 926 0.1+ 0.2+
030409 704 0.2- 1.0+ 030422 413 0.1+ 0.2- 120412 926 0.4+ 0.2+
030409 704 0.4+ 0.6+ 030422 413 0.2- 0.5- 120412 926 0.5+ 0.4+
030409 704 0.4+ 0.4+ 030423 246 0.1+ 0.2+ 120412 926 0.3- 0.1-
030409 704 0.2+ 0.2- 030423 246 0.8+ 0.6- 120412 I93 0.0 0.4+
030409 704 0.3+ 0.2+ 030423 246 0.5- 0.2+ 120412 I93 0.8- 0.0
030409 246 0.1- 0.4+ 030423 246 0.4+ 0.2+ 120412 I93 0.0 0.0
030409 246 0.2+ 0.3+ 030423 246 0.1+ 0.1- 120412 J95 0.4+ 0.4-
030409 246 0.6+ 0.1+ 030423 246 0.6+ 0.2+ 120412 J95 0.2+ 0.1-
030409 246 0.1+ 0.1- 030424 185 1.2+ 0.5-
030409 246 0.6+ 0.6+ 030424 185 0.1+ 0.4-
Ephemeris:
2003 GH21 a,e,i = 1.48, 0.26, 20 q = 1.0943
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2012 03 14 07 29 54.3 -35 28 50 0.2401 1.1037 111.1 57.2 20.6
...
2012 03 29 08 44 04.9 -17 17 38 0.2113 1.1265 122.6 48.3 20.1
...
2012 04 06 09 27 01.2 -05 33 38 0.2161 1.1437 126.9 44.4 20.1
...
2012 04 12 09 58 20.0 +02 32 30 0.2308 1.1585 127.9 43.1 20.2
2012 04 13 10 03 23.4 +03 46 03 0.2341 1.1612 127.9 43.0 20.2
2012 04 14 10 08 23.4 +04 57 04 0.2377 1.1638 127.8 42.9 20.3
...
2012 04 20 10 37 04.5 +11 06 32 0.2636 1.1807 126.5 43.1 20.5
...
2012 04 28 11 11 29.4 +16 50 23 0.3082 1.2051 123.6 44.1 20.9
...
2012 05 13 12 04 38.2 +21 46 37 0.4128 1.2558 117.5 45.5 21.7
A. U. Tomatic (C) Copyright 2012 MPC M.P.E.C. 2012-G34
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