MPEC 1998-H20 : 1998 HL3
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Read MPEC 1998-H19
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M.P.E.C. 1998-H20 Issued 1998 Apr. 23, 15:32 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 HL3
Observations:
J98H03L* C1998 04 21.29964 14 19 47.67 -05 54 43.3 19.3 704
J98H03L C1998 04 21.31979 14 19 44.44 -05 54 15.8 19.8 704
J98H03L C1998 04 21.34004 14 19 41.28 -05 53 50.1 20.2 704
J98H03L C1998 04 21.36020 14 19 38.12 -05 53 24.6 19.7 704
J98H03L C1998 04 21.38090 14 19 34.62 -05 52 55.2 20.0 704
J98H03L C1998 04 21.98760 14 18 03.80 -05 39 32.3 557
J98H03L C1998 04 21.99027 14 18 03.40 -05 39 28.8 557
J98H03L C1998 04 21.99289 14 18 02.92 -05 39 24.6 19.1 V 557
J98H03L C1998 04 21.99569 14 18 02.55 -05 39 21.4 557
J98H03L C1998 04 22.25546 14 17 23.51 -05 33 25.9 19.1 704
J98H03L C1998 04 22.25559 14 17 23.38 -05 33 28.4 19.4 704
J98H03L C1998 04 22.27432 14 17 20.50 -05 33 02.7 19.4 704
J98H03L C1998 04 22.27445 14 17 20.43 -05 33 03.3 19.2 704
J98H03L C1998 04 22.28090 14 17 18.76 -05 32 55.1 18.3 784
J98H03L C1998 04 22.29321 14 17 17.49 -05 32 35.0 19.4 704
J98H03L C1998 04 22.29334 14 17 17.46 -05 32 37.4 19.5 704
J98H03L C1998 04 22.31211 14 17 14.18 -05 32 11.7 19.2 704
J98H03L C1998 04 22.31225 14 17 14.19 -05 32 11.1 19.6 704
J98H03L C1998 04 22.33123 14 17 11.16 -05 31 44.5 19.0 704
J98H03L C1998 04 22.33136 14 17 10.82 -05 31 45.7 19.4 704
J98H03L C1998 04 22.93778 14 15 37.52 -05 18 05.3 557
J98H03L C1998 04 22.94645 14 15 36.17 -05 17 53.7 19.0 V 557
J98H03L C1998 04 23.00120 14 15 27.18 -05 16 38.5 118
J98H03L C1998 04 23.00333 14 15 26.99 -05 16 35.7 19.0 V 046
J98H03L C1998 04 23.00361 14 15 26.88 -05 16 35.0 18.7 R 118
J98H03L C1998 04 23.00539 14 15 26.39 -05 16 32.7 046
J98H03L C1998 04 23.00735 14 15 26.21 -05 16 30.1 118
J98H03L C1998 04 23.00936 14 15 25.88 -05 16 27.6 046
J98H03L C1998 04 23.01123 14 15 25.62 -05 16 24.6 046
J98H03L C1998 04 23.01323 14 15 25.26 -05 16 22.1 046
Observer details:
046 Klet. Observers M. Tichy, Z. Moravec. Measurer M. Tichy. 0.57-m f/5.2
reflector + CCD.
118 Modra. Observers L. Kornos, P. Koleny. 0.6-m f/5.5 reflector + CCD.
557 Ondrejov. Observer P. Pravec. 0.65-m f/3.6 reflector + CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, F. Shelly,
M. Bezpalko. Measurers J. Stuart, H. Viggh. 1.0-m f/2.15 reflector + CCD.
784 Stull Observatory, Alfred University. Observers D. R. DeGraff,
A. C. Schwortz, R. A. Gutermuth. Measurers A. C. Schwortz,
R. A. Guthermuthh. 0.81-m f/4 reflector + CCD.
Orbital elements:
1998 HL3 PHA 0.045
Epoch 1998 Apr. 17.0 TT = JDT 2450920.5 Williams
M 250.17269 (2000.0) P Q
n 0.82320206 Peri. 188.10556 +0.98963834 +0.14299688
a 1.1275395 Node 163.65603 -0.12901759 +0.92522030
e 0.3633865 Incl. 2.63880 -0.06301126 +0.35145311
P 1.20 H 20.0 G 0.15
From 30 observations 1998 Apr. 21-23.
Ephemeris:
1998 HL3 a,e,i = 1.13, 0.36, 3 q = 0.7178
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 04 17 14 29.73 -07 24.6 0.375 1.372 167.3 9.3 19.2
1998 04 22 14 18.04 -05 38.9 0.349 1.352 171.9 6.0 18.8
1998 04 27 14 04.49 -03 42.1 0.328 1.330 169.5 7.9 18.8
1998 05 02 13 49.56 -01 38.5 0.312 1.308 162.2 13.6 18.8
1998 05 07 13 33.89 +00 26.3 0.300 1.285 153.6 20.4 18.9
1998 05 12 13 18.17 +02 26.1 0.293 1.261 144.7 27.5 19.1
1998 05 17 13 03.05 +04 15.8 0.289 1.235 136.0 34.7 19.2
1998 05 22 12 49.06 +05 51.7 0.287 1.209 127.5 41.6 19.3
1998 05 27 12 36.56 +07 12.2 0.287 1.181 119.4 48.3 19.5
1998 06 01 12 25.70 +08 17.5 0.289 1.153 111.9 54.7 19.6
1998 06 06 12 16.41 +09 09.4 0.290 1.124 104.7 60.8 19.7
1998 06 11 12 08.45 +09 50.7 0.291 1.094 97.9 66.8 19.9
1998 06 16 12 01.46 +10 24.3 0.290 1.063 91.4 72.7 20.0
1998 06 21 11 55.06 +10 53.2 0.288 1.032 85.1 78.7 20.1
1998 06 26 11 48.79 +11 20.4 0.285 1.001 78.8 85.0 20.3
1998 07 01 11 42.05 +11 49.5 0.279 0.969 72.4 91.7 20.4
1998 07 06 11 34.13 +12 23.8 0.272 0.938 65.7 99.0 20.6
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-H20
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