MPEC 1998-O25 : 1998 OS4
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M.P.E.C. 1998-O25 Issued 1998 July 30, 15:28 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
1998 OS4
Observations:
J98O04S* C1998 07 26.32244 22 00 49.94 -03 11 04.5 18.6 R 699
J98O04S C1998 07 26.33416 22 00 50.04 -03 10 43.5 699
J98O04S C1998 07 26.34657 22 00 50.09 -03 10 21.3 699
J98O04S C1998 07 26.93991 22 00 56.22 -02 52 31.3 18.8 V 046
J98O04S C1998 07 26.94105 22 00 56.20 -02 52 28.9 046
J98O04S C1998 07 26.94333 22 00 56.16 -02 52 25.7 046
J98O04S C1998 07 26.94446 22 00 56.16 -02 52 23.2 18.9 V 046
J98O04S C1998 07 26.94560 22 00 56.25 -02 52 22.5 046
J98O04S C1998 07 26.94681 22 00 56.22 -02 52 18.5 046
J98O04S C1998 07 27.03900 22 00 56.60 -02 49 31.9 557
J98O04S C1998 07 27.04133 22 00 56.59 -02 49 28.5 18.8 V 557
J98O04S C1998 07 27.42516 22 00 59.85 -02 37 52.3 673
J98O04S C1998 07 27.43079 22 00 59.83 -02 37 41.4 673
J98O04S C1998 07 29.89375 22 01 15.20 -01 23 28.4 106
J98O04S C1998 07 29.90542 22 01 15.14 -01 23 07.8 106
J98O04S C1998 07 29.91463 22 01 15.17 -01 22 50.8 106
J98O04S C1998 07 29.92786 22 01 15.14 -01 22 27.2 106
J98O04S C1998 07 29.92882 22 01 15.24 -01 22 24.8 18.5 V 104
J98O04S C1998 07 29.93252 22 01 15.25 -01 22 17.8 104
J98O04S C1998 07 29.93611 22 01 15.25 -01 22 11.7 104
J98O04S C1998 07 29.93970 22 01 15.27 -01 22 05.7 104
Observer details:
046 Klet. Observers J. Ticha, M. Tichy. Measurer M. Tichy. 0.57-m f/5.2
reflector + CCD.
104 San Marcello Pistoiese. Observers L. Tesi, A. Boattini. Measurers
A. Boattini, G. Forti, L. Tesi. 0.40-m f/5 reflector + CCD.
106 Crni Vrh. Observers J. Skvarc, H. Mikuz. 0.36-m f/6.7 Schmidt-Cassegrain
+ CCD.
557 Ondrejov. Observer P. Pravec. 0.65-m f/3.6 reflector + CCD.
673 Table Mountain Observatory, Wrightwood. Observers D. L. Rabinowitz,
M. L. Hicks, G. Genevier. 0.6-m reflector + CCD.
699 Lowell Observatory-LONEOS. Observer B. W. Koehn. Measurers B. W. Koehn,
E. Bowell. 0.59-m LONEOS Schmidt + CCD.
Orbital elements:
1998 OS4
Epoch 1998 July 26.0 TT = JDT 2451020.5 Williams
M 354.79020 (2000.0) P Q
n 0.21720814 Peri. 31.15769 +0.84642411 +0.50574190
a 2.7408503 Node 297.55863 -0.51904481 +0.71359715
e 0.4848739 Incl. 10.83861 -0.11899037 +0.48477235
P 4.54 H 18.5 G 0.15
From 21 observations 1998 July 26-29.
Ephemeris:
1998 OS4 a,e,i = 2.74, 0.48, 11 q = 1.4119
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 07 26 22 00.77 -03 20.6 0.458 1.432 150.7 20.3 18.6
1998 07 31 22 01.29 -00 50.0 0.442 1.425 153.5 18.6 18.5
1998 08 05 22 01.05 +01 39.0 0.431 1.419 155.9 17.0 18.3
1998 08 10 22 00.20 +04 02.8 0.423 1.415 157.8 15.7 18.2
1998 08 15 21 58.87 +06 18.0 0.420 1.412 158.9 15.0 18.2
1998 08 20 21 57.28 +08 21.3 0.420 1.412 159.1 14.8 18.2
1998 08 25 21 55.66 +10 10.2 0.423 1.413 158.4 15.3 18.2
1998 09 04 21 53.37 +12 59.6 0.441 1.421 155.1 17.4 18.4
1998 09 14 21 53.60 +14 45.6 0.472 1.436 150.5 20.2 18.7
1998 09 24 21 57.26 +15 38.6 0.515 1.457 145.4 23.0 19.0
1998 10 04 22 04.65 +15 55.2 0.570 1.485 140.3 25.5 19.3
1998 10 14 22 15.40 +15 51.6 0.637 1.518 135.3 27.5 19.7
1998 10 24 22 28.92 +15 40.3 0.715 1.556 130.3 29.2 20.0
1998 11 03 22 44.60 +15 30.9 0.804 1.598 125.3 30.4 20.4
1998 11 13 23 01.83 +15 28.6 0.905 1.644 120.3 31.3 20.7
1998 11 23 23 20.12 +15 36.1 1.016 1.693 115.3 31.8 21.0
1998 12 03 23 39.14 +15 54.5 1.138 1.744 110.2 32.0 21.3
1998 12 13 23 58.58 +16 23.1 1.270 1.797 105.0 31.9 21.6
1998 12 23 00 18.29 +17 00.6 1.410 1.852 99.8 31.6 21.9
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-O25
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