MPEC 1998-B19: 1998 BG9
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M.P.E.C. 1998-B19 Issued 1998 Jan. 26, 22:32 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 BG9
Observations:
J98B09G* C1998 01 24.54697 10 54 26.92 +25 20 43.8 18.1 V 566
J98B09G C1998 01 24.55698 10 54 28.83 +25 21 11.2 18.0 V 566
J98B09G C1998 01 24.56703 10 54 30.78 +25 21 38.6 18.1 V 566
J98B09G C1998 01 25.46467 10 57 37.19 +26 02 06.1 18.0 V 566
J98B09G C1998 01 25.47497 10 57 39.14 +26 02 34.0 18.2 V 566
J98B09G C1998 01 25.48467 10 57 40.97 +26 03 00.6 18.0 V 566
J98B09G C1998 01 25.55150 10 57 53.46 +26 06 00.8 18.3 V 566
J98B09G C1998 01 25.56108 10 57 55.25 +26 06 26.2 18.3 V 566
J98B09G C1998 01 25.57177 10 57 57.23 +26 06 54.4 18.2 V 566
J98B09G C1998 01 25.97740 10 59 20.54 +26 24 32.3 17.8 V 557
J98B09G C1998 01 25.97972 10 59 20.98 +26 24 38.8 557
J98B09G C1998 01 26.30980 11 00 27.60 +26 39 14.8 673
J98B09G C1998 01 26.31522 11 00 28.62 +26 39 29.8 673
J98B09G C1998 01 26.32098 11 00 29.65 +26 39 45.0 673
J98B09G C1998 01 26.61390 11 01 27.55 +26 52 30.4 897
J98B09G C1998 01 26.61706 11 01 28.20 +26 52 38.7 897
J98B09G C1998 01 26.62267 11 01 29.20 +26 52 53.6 897
J98B09G C1998 01 26.62554 11 01 29.68 +26 53 02.3 17.7 R 897
J98B09G C1998 01 26.91372 11 02 26.56 +27 05 19.1 17.3 R 046
J98B09G C1998 01 26.91519 11 02 26.83 +27 05 22.9 046
J98B09G C1998 01 26.91661 11 02 27.12 +27 05 26.4 046
J98B09G C1998 01 26.91889 11 02 27.56 +27 05 32.7 046
Observer details:
046 Klet. Observers M. Tichy, Z. Moravec. Measurer M. Tichy. 0.57-m f/5.2
reflector + CCD.
557 Ondrejov. Observer P. Pravec. 0.65-m f/3.6 reflector + CCD.
566 Haleakala-NEAT/GEODSS. Observers E. F. Helin, S. Pravdo, K. J. Lawrence,
D. L. Rabinowitz for the NEAT team. 1.0-m f/2.2 GEODSS telescope + CCD.
673 Table Mountain Observatory, Wrightwood. Observer M. Hicks. Measurer
D. L. Rabinowitz. 0.6-m reflector + CCD.
897 Chiyoda. Observer T. Kojima. 0.25-m f/6.0 reflector + CCD.
Orbital elements:
1998 BG9
Epoch 1998 Jan. 7.0 TT = JDT 2450820.5 Williams
M 359.19066 (2000.0) P Q
n 0.24270322 Peri. 0.96887 -0.44718172 -0.87086764
a 2.5453785 Node 115.61947 +0.81910626 -0.49034214
e 0.5400996 Incl. 13.07631 +0.35929576 +0.03397264
P 4.06 H 19.5 G 0.15
From 22 observations 1998 Jan. 24-26.
Ephemeris:
1998 BG9 a,e,i = 2.55, 0.54, 13 q = 1.1706
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 01 17 10 26.07 +19 14.2 0.224 1.173 144.5 29.1 17.9
1998 01 22 10 45.33 +23 21.6 0.228 1.179 145.2 28.5 17.9
1998 01 27 11 02.70 +27 09.3 0.236 1.187 145.5 28.0 18.0
1998 02 01 11 17.72 +30 29.3 0.247 1.197 145.5 27.8 18.1
1998 02 06 11 30.18 +33 17.6 0.262 1.211 145.4 27.5 18.2
1998 02 11 11 40.05 +35 33.5 0.280 1.227 145.2 27.3 18.4
1998 02 16 11 47.43 +37 18.4 0.299 1.245 145.0 27.0 18.6
1998 02 21 11 52.53 +38 34.4 0.322 1.265 144.9 26.7 18.8
1998 02 26 11 55.69 +39 23.4 0.346 1.288 144.6 26.4 18.9
1998 03 03 11 57.34 +39 47.5 0.373 1.312 144.3 26.2 19.1
1998 03 08 11 57.93 +39 49.0 0.402 1.338 143.8 26.0 19.3
1998 03 13 11 57.88 +39 30.6 0.433 1.365 143.1 25.9 19.5
1998 03 18 11 57.50 +38 55.0 0.466 1.393 142.1 26.0 19.7
1998 03 23 11 57.08 +38 04.5 0.503 1.423 141.0 26.2 20.0
1998 03 28 11 56.83 +37 01.6 0.542 1.453 139.6 26.5 20.2
1998 04 02 11 56.93 +35 48.4 0.583 1.485 137.9 26.8 20.4
1998 04 07 11 57.50 +34 27.1 0.628 1.517 136.1 27.2 20.6
1998 04 12 11 58.58 +33 00.0 0.675 1.549 134.1 27.7 20.8
1998 04 17 12 00.18 +31 28.5 0.725 1.583 131.9 28.2 21.0
1998 04 22 12 02.27 +29 54.2 0.778 1.616 129.6 28.6 21.3
1998 04 27 12 04.85 +28 18.1 0.834 1.650 127.2 29.1 21.5
1998 05 02 12 07.90 +26 41.0 0.892 1.684 124.7 29.4 21.7
1998 05 07 12 11.38 +25 04.0 0.954 1.719 122.2 29.8 21.9
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-B19
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