MPEC 1998-F10: 1998 EP4
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M.P.E.C. 1998-F10 Issued 1998 Mar. 22, 18:22 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 EP4
Revision to MPEC 1998-E12
Observations:
J98E04P C1998 03 17.38116 11 59 14.23 -03 33 55.1 658
J98E04P C1998 03 17.38372 11 59 13.90 -03 34 00.3 658
J98E04P C1998 03 17.38829 11 59 13.36 -03 34 10.2 658
J98E04P C1998 03 18.55773 11 56 59.59 -04 17 50.7 18.7 V 402
J98E04P C1998 03 18.55981 11 56 59.37 -04 17 53.9 402
J98E04P C1998 03 18.56190 11 56 59.12 -04 17 58.9 402
J98E04P C1998 03 18.56398 11 56 58.80 -04 18 04.5 402
J98E04P C1998 03 18.59063 11 56 55.28 -04 19 06.5 18.3 V 360
J98E04P C1998 03 18.59514 11 56 54.68 -04 19 17.6 360
J98E04P C1998 03 18.60000 11 56 54.00 -04 19 29.1 360
J98E04P C1998 03 20.56858 11 52 34.07 -05 41 28.5 18.0 R 426
J98E04P C1998 03 20.57230 11 52 33.47 -05 41 38.6 18.4 R 426
J98E04P C1998 03 20.57602 11 52 32.84 -05 41 49.0 18.4 R 426
Observer details:
360 Kuma Kogen. Observer A. Nakamura. 0.60-m f/6.0 Ritchey-Chretien + CCD.
402 Dynic Astronomical Observatory. Observer A. Sugie. 0.60-m f/3.7 reflector
+ CCD.
426 Woomera. Observer F. B. Zoltowski. 0.30-m f/3.3 Schmidt-Cassegrain + CCD
658 Dominion Astrophysical Observatory. Observer D. D. Balam. 1.82-m
reflector + CCD.
Orbital elements:
1998 EP4
Epoch 1998 Mar. 8.0 TT = JDT 2450880.5 Williams
M 319.73232 (2000.0) P Q
n 0.50531057 Peri. 265.99121 -0.18758117 +0.98213469
a 1.5610990 Node 353.14214 -0.84401876 -0.16897175
e 0.4412673 Incl. 7.21282 -0.50243968 -0.08282516
P 1.95 H 21.5 G 0.15
From 28 observations 1998 Mar. 2-20.
Ephemeris:
1998 EP4 a,e,i = 1.56, 0.44, 7 q = 0.8722
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 03 18 11 58.08 -03 56.0 0.184 1.178 174.6 4.6 18.6
1998 03 23 11 46.11 -07 42.8 0.150 1.145 171.2 7.6 18.2
1998 03 28 11 27.63 -13 20.6 0.119 1.112 162.1 16.0 18.0
1998 04 02 10 57.21 -22 00.1 0.093 1.080 148.9 28.6 17.8
1998 04 07 10 01.11 -34 57.1 0.074 1.049 129.7 47.2 17.7
1998 04 12 08 07.05 -49 20.5 0.065 1.020 104.0 72.5 18.1
1998 04 17 05 18.54 -52 55.2 0.071 0.992 78.5 97.5 19.2
1998 04 22 03 25.73 -45 55.8 0.087 0.966 61.3 114.2 20.6
1998 04 27 02 31.27 -38 16.3 0.110 0.943 52.1 122.6 21.6
1998 05 02 02 02.77 -32 13.0 0.137 0.922 48.1 125.5 22.3
1998 05 07 01 46.47 -27 26.6 0.166 0.904 47.2 125.1 22.6
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-F10
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