MPEC 1998-O27: 1998 OX4
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M.P.E.C. 1998-O27 Issued 1998 July 31, 15:15 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 OX4
Observations:
J98O04X* C1998 07 26.30244 20 56 50.87 -15 45 10.1 20.7 V 691
J98O04X C1998 07 26.35354 20 56 45.09 -15 45 03.8 20.7 V 691
J98O04X C1998 07 26.37803 20 56 42.29 -15 45 01.6 20.7 V 691
J98O04X C1998 07 27.27160 20 55 05.72 -15 43 17.2 21.0 V 691
J98O04X C1998 07 27.27553 20 55 05.26 -15 43 17.0 20.7 V 691
J98O04X C1998 07 27.28138 20 55 04.57 -15 43 16.1 20.8 V 691
J98O04X C1998 07 27.40172 20 54 50.29 -15 43 02.0 20.8 V 691
J98O04X C1998 07 27.40579 20 54 49.82 -15 43 01.6 20.9 V 691
J98O04X C1998 07 27.40971 20 54 49.34 -15 43 00.8 20.7 V 691
J98O04X C1998 07 31.29059 20 47 01.33 -15 35 01.6 696
J98O04X C1998 07 31.29491 20 47 00.68 -15 35 01.0 696
Observer details:
691 Steward Observatory, Kitt Peak. Observer J. V. Scotti. 0.9-m Spacewatch
telescope.
696 Whipple Observatory, Mt. Hopkins. Observer C. W. Hergenrother. 1.2-m
reflector + CCD.
Orbital elements:
1998 OX4 PHA 0.001
Epoch 1998 July 26.0 TT = JDT 2451020.5 Williams
M 305.90873 (2000.0) P Q
n 0.49914546 Peri. 116.54946 +0.54560506 -0.83530353
a 1.5739272 Node 300.22193 +0.73831682 +0.51732710
e 0.4821225 Incl. 4.49360 +0.39648882 +0.18612008
P 1.97 H 21.5 G 0.15
From 11 observations 1998 July 26-31.
Ephemeris:
1998 OX4 a,e,i = 1.57, 0.48, 4 q = 0.8151
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 07 26 20 57.38 -15 45.5 0.449 1.461 170.5 6.6 21.1
1998 07 31 20 47.65 -15 35.4 0.410 1.425 176.7 2.3 20.6
1998 08 05 20 35.97 -15 23.2 0.376 1.389 174.1 4.3 20.5
1998 08 10 20 22.45 -15 07.1 0.346 1.352 166.4 10.1 20.5
1998 08 15 20 07.32 -14 45.4 0.320 1.315 158.2 16.6 20.5
1998 08 20 19 50.96 -14 16.5 0.298 1.278 149.5 23.7 20.5
1998 08 25 19 33.91 -13 38.9 0.280 1.240 140.7 31.1 20.5
1998 08 30 19 16.73 -12 52.3 0.265 1.203 131.8 38.8 20.6
1998 09 04 18 59.84 -11 56.6 0.252 1.165 122.9 46.6 20.6
1998 09 09 18 43.45 -10 52.0 0.241 1.128 114.2 54.6 20.7
1998 09 14 18 27.53 -09 38.5 0.230 1.091 105.5 62.7 20.7
1998 09 19 18 11.84 -08 16.0 0.220 1.054 96.9 71.1 20.8
1998 09 24 17 55.87 -06 43.3 0.210 1.019 88.2 79.9 20.9
1998 09 29 17 38.76 -04 58.9 0.200 0.985 79.3 89.2 21.1
1998 10 04 17 19.39 -03 01.1 0.189 0.952 70.0 99.3 21.4
1998 10 09 16 56.44 -00 49.7 0.180 0.922 59.9 110.4 21.8
1998 10 14 16 28.80 +01 31.8 0.172 0.895 49.1 122.6 22.5
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-O27
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