MPEC 1999-N25: 1998 QM107
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M.P.E.C. 1999-N25 Issued 1999 July 14, 19:48 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.
BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
1998 QM107
Revision to MPEC 1998-X23
Observations:
J98QA7M 3C1999 07 11.52245 21 20 07.21 -17 05 25.9 568
J98QA7M 3C1999 07 11.53951 21 20 07.07 -17 05 26.8 568
J98QA7M 3C1999 07 12.56116 21 19 58.36 -17 06 18.3 568
J98QA7M 3C1999 07 12.61316 21 19 57.89 -17 06 21.1 568
Observer details:
568 Mauna Kea. Observers C. Veillet, J. Anderson. 3.6-m Canada-France-Hawaii
reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
990711 568 1.2+ 1.0+ 990712 568 1.3+ 1.0+ MPC 33349 +10.4 day
Orbital elements:
1998 QM107
Epoch 1999 Aug. 10.0 TT = JDT 2451400.5 Williams
M 25.29878 (2000.0) P Q
n 0.01093726 Peri. 155.64761 +0.22597917 +0.96545422
a 20.1000464 Node 127.15517 -0.91832421 +0.25556622
e 0.1381537 Incl. 9.36833 -0.32498318 -0.05083372
P 90.11 H 10.6 G 0.15 U 4
Residuals in seconds of arc
980821 568 0.0 0.2- 980924 568 0.1+ 0.1- 981016 695 0.2+ 0.3+
980822 568 0.8+ 0.8- 980924 568 0.1+ 0.1+ 981016 695 0.0 0.2+
980822 568 0.1+ 0.2- 980924 568 0.1- 0.0 981023 568 0.1- 0.2+
980827 568 0.2- 0.1- 980925 568 0.0 0.0 981023 568 0.1- 0.1+
980827 568 0.2- 0.2+ 980925 568 0.1+ 0.0 981128 568 0.1- 0.3-
980827 568 0.2- 0.1- 980925 568 0.1- 0.1+ 981128 568 0.1+ 0.4-
980827 568 0.0 0.1+ 980925 568 0.3- 0.0 981128 568 0.1+ 0.3-
980923 568 0.4- 0.3- 980928 568 0.1- 0.1+ 981128 568 0.1+ 0.3-
980923 568 0.1- 0.0 980928 568 0.0 0.1+ 990711 568 0.2- 0.1-
980923 568 0.1+ 0.3+ 981015 695 0.0 0.3+ 990711 568 0.0 0.1-
980923 568 0.1- 0.4+ 981015 695 0.1+ 0.3+ 990712 568 0.2+ 0.2+
980924 568 0.1+ 0.2+ 981016 695 0.0 0.3+ 990712 568 0.0 0.0
Ephemeris:
1998 QM107 a,e,i = 20.10, 0.14, 9 q = 17.323
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 07 11 21 20.19 -17 05.0 16.769 17.666 151.1 1.6 23.2
1999 07 21 21 18.70 -17 13.7 16.705 17.669 161.0 1.1 23.1
1999 07 31 21 17.07 -17 22.8 16.669 17.672 170.9 0.5 23.0
1999 08 10 21 15.36 -17 32.1 16.662 17.675 178.1 0.1 23.0
1999 08 20 21 13.65 -17 41.1 16.684 17.678 168.8 0.6 23.1
1999 08 30 21 12.03 -17 49.5 16.736 17.681 158.8 1.2 23.1
1999 09 09 21 10.55 -17 57.1 16.815 17.684 148.8 1.7 23.2
1999 09 19 21 09.29 -18 03.5 16.919 17.687 138.7 2.1 23.2
1999 09 29 21 08.31 -18 08.5 17.046 17.690 128.7 2.5 23.3
1999 10 09 21 07.64 -18 12.0 17.192 17.693 118.7 2.8 23.3
1999 10 19 21 07.33 -18 13.8 17.351 17.696 108.7 3.1 23.3
1999 10 29 21 07.40 -18 14.0 17.520 17.699 98.8 3.2 23.4
1999 11 08 21 07.85 -18 12.4 17.694 17.702 88.9 3.2 23.4
1999 11 18 21 08.68 -18 09.2 17.867 17.705 79.0 3.1 23.4
1999 11 28 21 09.87 -18 04.5 18.034 17.708 69.2 3.0 23.4
1999 12 08 21 11.40 -17 58.2 18.191 17.711 59.4 2.7 23.4
Gareth V. Williams (C) Copyright 1999 MPC M.P.E.C. 1999-N25
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