MPEC 1998-J07: 1998 HG49
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M.P.E.C. 1998-J07 Issued 1998 May 4, 15:02 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 HG49
Observations:
J98H49G* C1998 04 27.20297 12 35 42.27 +00 46 16.4 21.4 V 691
J98H49G C1998 04 27.22402 12 35 40.01 +00 46 13.9 21.3 V 691
J98H49G C1998 04 27.24477 12 35 37.76 +00 46 11.6 21.3 V 691
J98H49G C1998 04 28.26187 12 34 01.05 +00 43 51.9 21.2 V 691
J98H49G C1998 04 28.27712 12 33 59.51 +00 43 49.3 21.4 V 691
J98H49G C1998 04 30.32500 12 30 57.71 +00 37 57.0 21.2 V 691
J98H49G C1998 04 30.33389 12 30 56.88 +00 37 55.2 21.4 V 691
J98H49G C1998 05 03.20432 12 27 13.73 +00 27 02.9 21.4 V 691
J98H49G C1998 05 03.20813 12 27 13.46 +00 27 02.6 22.4 V 691
J98H49G C1998 05 03.21209 12 27 13.08 +00 27 00.9 20.8 V 691
J98H49G C1998 05 03.30083 12 27 06.12 +00 26 38.4 696
J98H49G C1998 05 03.30470 12 27 05.82 +00 26 37.8 696
J98H49G C1998 05 03.30858 12 27 05.48 +00 26 36.3 21.8 R 696
Observer details:
691 Steward Observatory, Kitt Peak. Observers T. Gehrels, J. V. Scotti,
J. Montani. 0.9-m Spacewatch telescope.
696 Whipple Observatory, Mt. Hopkins. Observers C. W. Hergenrother,
M. J. Holman. 1.2-m reflector + CCD.
Orbital elements:
1998 HG49
Epoch 1998 Apr. 17.0 TT = JDT 2450920.5 Williams
M 197.26157 (2000.0) P Q
n 0.74973245 Peri. 324.27721 +0.98580058 -0.15976978
a 1.2000477 Node 45.00543 +0.16597974 +0.88045899
e 0.1125847 Incl. 4.19090 +0.02545474 +0.44639174
P 1.31 H 22.0 G 0.15
From 13 observations 1998 Apr. 27-May 3.
Ephemeris:
1998 HG49 a,e,i = 1.20, 0.11, 4 q = 1.0649
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 04 27 12 36.03 +00 46.9 0.351 1.325 151.1 21.5 21.4
1998 05 02 12 28.72 +00 32.2 0.364 1.322 144.8 26.1 21.6
1998 05 07 12 23.21 +00 08.4 0.379 1.318 138.9 30.2 21.8
1998 05 12 12 19.51 -00 23.5 0.395 1.314 133.5 33.9 22.0
1998 05 17 12 17.55 -01 02.7 0.414 1.309 128.5 37.2 22.2
1998 05 22 12 17.22 -01 48.2 0.433 1.304 123.9 40.1 22.3
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-J07
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