MPEC 2007-R45 : 1998 QB28
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M.P.E.C. 2007-R45 Issued 2007 Sept. 11, 15:26 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
1998 QB28
Additional Observations:
J98Q28B C2007 09 10.38221 00 42 56.48 +05 22 33.2 21.1 V ER045G96
J98Q28B C2007 09 10.39042 00 42 55.90 +05 22 30.4 20.8 V ER045G96
J98Q28B C2007 09 10.39845 00 42 55.36 +05 22 27.5 21.1 V ER045G96
J98Q28B C2007 09 10.40645 00 42 54.75 +05 22 24.9 20.9 V ER045G96
J98Q28B C2007 09 10.45461 00 42 51.40 +05 22 08.8 21.3 V ER045G96
J98Q28B C2007 09 10.46372 00 42 50.75 +05 22 05.7 20.6 V ER045G96
J98Q28B C2007 09 10.47288 00 42 50.13 +05 22 02.6 21.2 V ER045G96
J98Q28B C2007 09 11.06816 00 42 11.16 +05 18 41.1 ER045J95
J98Q28B C2007 09 11.08724 00 42 09.73 +05 18 34.1 21.0 R ER045J95
J98Q28B C2007 09 11.13364 00 42 06.53 +05 18 20.6 20.1 R ER045J95
J98Q28B C2007 09 11.35508 00 41 51.97 +05 17 07.8 21.2 V ER045G96
J98Q28B C2007 09 11.36271 00 41 51.43 +05 17 05.0 21.0 V ER045G96
J98Q28B C2007 09 11.37028 00 41 50.89 +05 17 02.3 21.4 V ER045G96
J98Q28B C2007 09 11.37781 00 41 50.35 +05 16 59.8 21.4 V ER045G96
Observer details:
G96 Mt. Lemmon Survey. Observers R. A. Kowalski, E. C. Beshore. 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.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
070910 G9613.18+ 5.95+ 070911 G9613.19+ 5.95+ MPO 57671 -11.6 day
Orbital elements:
1998 QB28 Earth MOID = 0.2713 AU
Epoch 2007 Oct. 27.0 TT = JDT 2454400.5 MPC
M 53.77115 (2000.0) P Q
n 0.32993804 Peri. 297.89871 +0.16606049 +0.98609781
a 2.0741864 Node 341.65727 -0.89800466 +0.14874063
e 0.3800080 Incl. 1.07741 -0.40744514 +0.07407649
P 2.99 H 20.3 G 0.15 U 5
Residuals in seconds of arc
980826 691 0.2- 0.2+ 980831 691 0.2+ 0.1- 070910 G96 0.1+ 0.5-
980826 691 0.1- 0.0 980913 691 0.0 0.1+ 070910 G96 0.1- 0.5-
980826 691 0.1- 0.3+ 980913 691 0.3+ 0.1+ 070910 G96 0.2+ 0.6-
980827 691 0.1- 0.0 980913 691 0.7+ 0.4+ 070911 J95 0.7+ 0.3-
980827 691 0.0 0.2+ 980915 691 0.7- 0.1+ 070911 J95 0.7- 0.8-
980827 691 0.0 0.0 980915 691 0.4- 0.2+ 070911 J95 0.1+ 1.4+
980830 691 0.0 0.1- 980915 691 0.3- 0.0 070911 G96 0.2- 0.0
980830 691 0.2+ 0.3- 070910 G96 0.1+ 0.1- 070911 G96 0.1- 0.2-
980830 691 0.1- 0.1- 070910 G96 0.1+ 0.2- 070911 G96 0.1- 0.3-
980831 691 0.1+ 0.5- 070910 G96 0.5+ 0.4- 070911 G96 0.1- 0.2-
980831 691 0.3+ 0.1+ 070910 G96 0.2- 0.4-
Ephemeris:
1998 QB28 a,e,i = 2.07, 0.38, 1 q = 1.2860
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2007 09 07 00 46.49 +05 40.1 0.667 1.624 151.0 17.5 21.4
2007 09 17 00 35.26 +04 42.8 0.683 1.672 163.7 9.7 21.2
2007 09 27 00 23.05 +03 35.8 0.719 1.720 176.5 2.0 21.0
2007 10 07 00 12.01 +02 32.1 0.776 1.769 170.5 5.4 21.4
2007 10 17 00 03.76 +01 42.9 0.854 1.818 158.4 11.7 22.0
Timothy B. Spahr (C) Copyright 2007 MPC M.P.E.C. 2007-R45
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