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M.P.E.C. 2008-G01 Issued 2008 Apr. 1, 00:29 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 http://www.cfa.harvard.edu/iau/mpc.html ISSN 1523-6714
2007 HR
Revision to MPEC 2007-H16
Additional Observations:
K07H00R C2008 03 30.37298 14 07 06.70 +04 26 18.8 19.9 V EG001703
K07H00R C2008 03 30.38008 14 07 03.43 +04 26 22.4 19.7 V EG001703
K07H00R C2008 03 30.38720 14 07 00.15 +04 26 26.4 19.1 V EG001703
K07H00R C2008 03 30.42038 14 06 44.84 +04 26 45.3 19.5 V EG001703
K07H00R C2008 03 30.42148 14 06 44.38 +04 26 45.9 19.3 V EG001703
K07H00R C2008 03 30.42258 14 06 43.91 +04 26 46.3 19.4 V EG001703
K07H00R C2008 03 30.49469 14 06 10.87 +04 27 26.3 19.5 V EG001703
K07H00R C2008 03 30.49855 14 06 09.12 +04 27 26.5 19.7 V EG001703
K07H00R C2008 03 30.50051 14 06 08.19 +04 27 28.9 19.9 V EG001703
K07H00R C2008 03 30.52672 14 05 57.16 +04 28 06.6 19.5 V EG001F85
K07H00R C2008 03 30.55420 14 05 44.56 +04 28 21.2 19.6 V EG001F85
K07H00R C2008 03 30.58367 14 05 31.12 +04 28 36.8 19.3 V EG001F85
K07H00R C2008 03 30.97083 14 02 40.50 +04 31 32.6 EG001J95
K07H00R C2008 03 30.97619 14 02 38.07 +04 31 35.3 EG001J95
K07H00R C2008 03 30.98146 14 02 35.71 +04 31 37.4 19.4 R EG001J95
K07H00R C2008 03 31.10728 14 01 38.88 +04 32 44.4 EG001118
K07H00R C2008 03 31.11366 14 01 36.11 +04 32 47.7 EG001118
K07H00R C2008 03 31.26333 14 00 31.99 +04 34 10.1 19.6 R EG001854
K07H00R C2008 03 31.26854 14 00 29.54 +04 34 12.3 19.7 R EG001854
K07H00R C2008 03 31.27373 14 00 27.40 +04 34 14.9 19.5 R EG001854
K07H00R C2008 03 31.31030 14 00 10.94 +04 34 33.6 19.5 V EG001G96
K07H00R C2008 03 31.31473 14 00 08.96 +04 34 35.8 19.4 V EG001G96
K07H00R C2008 03 31.31921 14 00 06.98 +04 34 38.1 19.4 V EG001G96
K07H00R C2008 03 31.32367 14 00 04.96 +04 34 40.3 19.6 V EG001G96
K07H00R C2008 03 31.87787 13 56 05.18 +04 39 06.3 EG001246
K07H00R C2008 03 31.87902 13 56 04.60 +04 39 06.5 EG001246
K07H00R C2008 03 31.88025 13 56 04.25 +04 39 06.1 EG001246
Observer details:
118 Modra. Observers S. Gajdos, J. Vilagi. 0.6-m f/5.5 reflector + CCD.
246 Klet Observatory-KLENOT. Observer M. Tichy. 1.06-m KLENOT Telescope
+ CCD.
703 Catalina Sky Survey. Observer A. R. Gibbs. Measurers E. C. Beshore,
A. Boattini, G. J. Garradd, A. R. Gibbs, A. D. Grauer, R. E. Hill,
R. A. Kowalski, S. M. Larson, R. H. McNaught. 0.68-m Schmidt + CCD.
854 Sabino Canyon Observatory, Tucson. Observer J. E. McGaha. 0.36-m f/10.0
Schmidt-Cassegrain + CCD.
F85 Tiki Observatory, Punaauia. Observer N. Teamo. 0.41-m f/8.0
Ritchey-Chretien + 3056x3056 CCD.
G96 Mt. Lemmon Survey. Observer A. Boattini. Measurers E. C. Beshore,
A. Boattini, G. J. Garradd, A. R. Gibbs, A. D. Grauer, R. E. Hill,
R. A. Kowalski, S. M. Larson, R. H. McNaught. 1.5-m reflector + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain
+ CCD.
Orbital elements:
2007 HR Earth MOID = 0.1113 AU
Epoch 2008 May 14.0 TT = JDT 2454600.5 MPC
M 105.65202 (2000.0) P Q
n 0.89443377 Peri. 12.99984 +0.69977050 -0.70546247
a 1.0668514 Node 32.80403 +0.63544659 +0.54278547
e 0.7415512 Incl. 11.97898 +0.32638762 +0.45574844
P 1.10 H 20.7 G 0.15 U 7
Residuals in seconds of arc
070416 G96 0.8+ 0.8- 070418 G96 0.6- 0.3- 080330 J95 0.0 0.5-
070416 G96 0.3+ 0.4+ 080330 703 0.1- 0.2- 080331 118 0.4- 0.3+
070416 G96 0.0 0.4+ 080330 703 0.1- 0.5- 080331 118 0.8+ 0.4+
070416 G96 0.1- 0.1+ 080330 703 0.2- 0.5- 080331 854 0.3+ 0.2+
070416 G96 0.1- 0.8- 080330 703 1.0- 0.3+ 080331 854 1.5- 0.2-
070416 G96 0.5- 0.2- 080330 703 0.3- 0.3+ 080331 854 1.1+ 0.3-
070416 G96 0.3+ 0.1- 080330 703 0.2+ 0.1+ 080331 G96 0.7- 0.2-
070416 G96 0.1- 0.0 080330 703 0.3- 1.0+ 080331 G96 0.7- 0.2-
070416 G96 0.4- 0.4+ 080330 703 0.1- 0.9- 080331 G96 0.3- 0.2-
070416 G96 0.0 0.1- 080330 703 0.7- 0.5+ 080331 G96 0.7- 0.3-
070416 G96 0.0 0.3+ 080330 F85 0.8+ 0.1- 080331 246 0.2+ 1.2+
070416 G96 0.7+ 0.0 080330 F85 0.8+ 0.3- 080331 246 1.0- 0.9+
070418 G96 0.3- 0.3+ 080330 F85 1.3+ 0.4- 080331 246 1.8+ 0.1-
070418 G96 0.4- 0.3+ 080330 J95 0.3+ 0.3+
070418 G96 0.3+ 0.0 080330 J95 0.1- 0.1+
Ephemeris:
2007 HR a,e,i = 1.07, 0.74, 12 q = 0.2757
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2008 03 25 14 50.15 +03 25.3 0.290 1.237 141.3 30.2 19.8
2008 03 30 14 09.93 +04 23.0 0.311 1.288 154.9 19.2 19.7
2008 04 04 13 34.90 +05 00.1 0.344 1.335 165.1 11.1 19.7
2008 04 09 13 06.17 +05 17.8 0.386 1.380 167.0 9.4 20.0
2008 04 14 12 43.60 +05 20.1 0.436 1.423 161.2 13.1 20.4
2008 04 19 12 26.41 +05 11.3 0.493 1.463 153.8 17.6 20.9
2008 04 24 12 13.63 +04 54.8 0.555 1.501 146.6 21.6 21.4
2008 04 29 12 04.38 +04 32.9 0.622 1.537 140.0 24.9 21.8
2008 05 04 11 57.93 +04 06.9 0.692 1.570 134.0 27.5 22.1
(Last issue was M.P.E.C. 2008-F66)
Gareth V. Williams (C) Copyright 2008 MPC M.P.E.C. 2008-G01
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