MPEC 1998-E12: 1998 EP4
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M.P.E.C. 1998-E12 Issued 1998 Mar. 5, 15:22 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
Observations:
J98E04P* C1998 03 02.41114 12 14 25.24 +02 13 46.0 19.9 V 691
J98E04P C1998 03 02.43222 12 14 24.52 +02 13 26.9 19.8 V 691
J98E04P C1998 03 02.45320 12 14 23.82 +02 13 08.2 20.1 V 691
J98E04P C1998 03 03.41918 12 13 59.01 +01 58 23.2 20.3 V 691
J98E04P C1998 03 03.42317 12 13 58.87 +01 58 18.9 20.3 V 691
J98E04P C1998 03 03.42749 12 13 58.70 +01 58 14.5 20.8 V 691
J98E04P C1998 03 04.37483 12 13 31.03 +01 43 05.5 20.5 V 691
J98E04P C1998 03 04.37854 12 13 30.89 +01 43 01.4 20.6 V 691
J98E04P C1998 03 04.38237 12 13 30.71 +01 42 57.9 20.5 V 691
J98E04P C1998 03 05.44815 12 12 54.16 +01 24 52.8 658
J98E04P C1998 03 05.45230 12 12 54.02 +01 24 47.9 658
J98E04P C1998 03 05.45586 12 12 53.84 +01 24 45.4 658
Observer details:
658 Dominion Astrophysical Observatory. Observer D. D. Balam. 1.82-m
reflector + CCD.
691 Steward Observatory, Kitt Peak. Observer J. Larsen. 0.9-m Spacewatch
telescope.
Orbital elements:
1998 EP4
Epoch 1998 Feb. 16.0 TT = JDT 2450860.5 Williams
M 310.69806 (2000.0) P Q
n 0.49568579 Peri. 266.02554 -0.18662105 +0.98231443
a 1.5812422 Node 353.16213 -0.84311033 -0.16807723
e 0.4500935 Incl. 7.33327 -0.50431890 -0.08251307
P 1.99 H 21.5 G 0.15
From 12 observations 1998 Mar. 2-5.
Ephemeris:
1998 EP4 a,e,i = 1.58, 0.45, 7 q = 0.8695
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 02 26 12 15.59 +03 13.6 0.354 1.318 154.5 18.8 20.8
1998 03 03 12 14.18 +02 05.1 0.307 1.284 159.6 15.6 20.3
1998 03 08 12 11.12 +00 37.9 0.264 1.249 164.9 12.0 19.8
1998 03 13 12 05.99 -01 17.6 0.224 1.215 170.3 7.9 19.2
1998 03 18 11 58.08 -03 56.7 0.186 1.181 174.5 4.6 18.6
1998 03 23 11 46.09 -07 44.6 0.152 1.147 171.2 7.6 18.2
1998 03 28 11 27.51 -13 24.8 0.121 1.113 162.0 16.0 18.0
1998 04 02 10 56.80 -22 09.9 0.094 1.081 148.7 28.7 17.8
1998 04 07 09 59.75 -35 16.5 0.074 1.050 129.3 47.6 17.8
1998 04 12 08 02.99 -49 41.2 0.066 1.019 103.3 73.1 18.2
1998 04 17 05 13.12 -52 49.4 0.072 0.991 77.8 98.1 19.3
1998 04 22 03 22.32 -45 36.0 0.089 0.965 60.7 114.7 20.6
1998 04 27 02 29.19 -37 56.3 0.113 0.941 51.7 122.9 21.7
1998 05 02 02 01.38 -31 55.4 0.140 0.920 47.9 125.6 22.4
1998 05 07 01 45.49 -27 11.1 0.170 0.902 47.0 125.0 22.7
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-E12
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