MPEC 1998-B18: 1998 BZ7
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M.P.E.C. 1998-B18 Issued 1998 Jan. 26, 16:42 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 BZ7
Observations:
J98B07Z* C1998 01 24.52242 10 41 37.33 +16 50 32.7 17.4 V 566
J98B07Z C1998 01 24.53247 10 41 38.54 +16 50 41.7 17.4 V 566
J98B07Z C1998 01 24.54376 10 41 39.87 +16 50 52.1 17.4 V 566
J98B07Z C1998 01 25.45280 10 43 39.24 +17 05 00.5 17.3 V 566
J98B07Z C1998 01 25.46313 10 43 40.52 +17 05 10.2 17.3 V 566
J98B07Z C1998 01 25.47327 10 43 41.75 +17 05 20.5 17.4 V 566
J98B07Z C1998 01 25.54559 10 43 50.62 +17 06 30.2 17.4 V 566
J98B07Z C1998 01 25.55557 10 43 51.84 +17 06 39.7 17.4 V 566
J98B07Z C1998 01 25.56604 10 43 53.12 +17 06 49.8 17.3 V 566
J98B07Z C1998 01 25.95797 10 44 46.43 +17 12 59.4 17.1 V 557
J98B07Z C1998 01 25.96029 10 44 46.73 +17 13 02.0 557
J98B07Z C1998 01 26.59757 10 46 13.51 +17 23 47.2 897
J98B07Z C1998 01 26.60217 10 46 14.10 +17 23 52.0 897
J98B07Z C1998 01 26.60830 10 46 14.90 +17 23 58.9 16.2 R 897
J98B07Z C1998 01 26.62539 10 46 17.15 +17 24 16.5 16.0 V 355
J98B07Z C1998 01 26.63116 10 46 17.91 +17 24 23.0 355
J98B07Z C1998 01 26.63451 10 46 18.37 +17 24 26.7 355
J98B07Z C1998 01 26.63854 10 46 18.86 +17 24 31.0 355
Observer details:
355 Hadano. Observer A. Asami. 0.2-m f/4.0 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.
897 Chiyoda. Observer T. Kojima. 0.25-m f/6.0 reflector + CCD.
Orbital elements:
1998 BZ7
Epoch 1998 Jan. 7.0 TT = JDT 2450820.5 Williams
M 328.52407 (2000.0) P Q
n 0.33605545 Peri. 102.81793 -0.80940060 +0.57788238
a 2.0489377 Node 112.57627 -0.57309778 -0.73843264
e 0.5578723 Incl. 6.49894 -0.12817799 -0.34751862
P 2.93 H 17.5 G 0.15
From 18 observations 1998 Jan. 24-26.
Ephemeris:
1998 BZ7 a,e,i = 2.05, 0.56, 6 q = 0.9059
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 01 17 10 26.96 +15 19.5 0.455 1.376 143.5 25.1 17.6
1998 01 22 10 36.40 +16 15.2 0.400 1.336 146.5 24.0 17.3
1998 01 27 10 47.13 +17 30.9 0.349 1.296 149.1 23.0 16.9
1998 02 01 10 59.87 +19 11.9 0.300 1.257 150.9 22.4 16.5
1998 02 06 11 15.79 +21 24.8 0.256 1.217 151.5 22.7 16.1
1998 02 11 11 36.83 +24 17.8 0.216 1.179 150.2 24.6 15.7
1998 02 16 12 06.26 +27 58.5 0.180 1.142 146.2 28.8 15.3
1998 02 21 12 49.56 +32 23.0 0.150 1.106 138.7 36.2 15.1
1998 02 26 13 54.50 +36 43.0 0.127 1.072 127.2 47.4 15.0
1998 03 03 15 24.04 +38 38.5 0.115 1.040 112.0 62.2 15.1
1998 03 08 17 00.38 +35 46.2 0.115 1.010 95.5 78.0 15.5
1998 03 13 18 17.65 +29 24.6 0.126 0.983 81.5 91.2 16.2
1998 03 18 19 11.11 +22 40.1 0.145 0.960 71.8 100.0 16.8
1998 03 23 19 48.02 +17 00.4 0.171 0.940 65.9 104.6 17.4
1998 03 28 20 15.01 +12 34.3 0.199 0.924 62.9 106.1 17.8
1998 04 02 20 36.12 +09 08.3 0.229 0.913 61.7 105.5 18.0
1998 04 07 20 53.69 +06 27.9 0.261 0.907 61.8 103.5 18.2
1998 04 12 21 09.07 +04 22.2 0.293 0.906 62.7 100.7 18.3
1998 04 17 21 23.01 +02 43.3 0.324 0.910 64.1 97.2 18.3
1998 04 22 21 35.91 +01 25.2 0.355 0.919 65.8 93.5 18.4
1998 04 27 21 47.96 +00 23.2 0.384 0.932 67.8 89.7 18.4
1998 05 02 21 59.26 -00 26.6 0.412 0.950 70.1 85.8 18.5
1998 05 07 22 09.82 -01 07.5 0.438 0.972 72.5 82.0 18.5
1998 05 12 22 19.66 -01 42.0 0.462 0.997 75.1 78.3 18.5
1998 05 17 22 28.73 -02 12.5 0.482 1.025 78.0 74.7 18.6
1998 05 22 22 36.99 -02 41.1 0.501 1.057 81.0 71.1 18.6
1998 05 27 22 44.35 -03 09.6 0.516 1.090 84.2 67.7 18.6
1998 06 01 22 50.73 -03 40.0 0.529 1.125 87.7 64.2 18.7
1998 06 06 22 56.08 -04 13.5 0.540 1.162 91.5 60.8 18.7
1998 06 11 23 00.34 -04 51.5 0.548 1.199 95.5 57.4 18.7
1998 06 16 23 03.43 -05 35.0 0.555 1.238 99.9 53.9 18.7
1998 06 21 23 05.27 -06 25.1 0.560 1.278 104.5 50.3 18.6
1998 06 26 23 05.77 -07 22.4 0.564 1.317 109.6 46.6 18.6
1998 07 01 23 04.88 -08 27.4 0.568 1.358 114.9 42.8 18.6
1998 07 06 23 02.58 -09 39.7 0.572 1.398 120.7 38.7 18.6
1998 07 11 22 58.89 -10 58.6 0.577 1.438 126.7 34.5 18.5
1998 07 16 22 53.85 -12 22.9 0.585 1.479 133.1 30.1 18.5
1998 07 21 22 47.55 -13 50.7 0.594 1.519 139.7 25.6 18.5
1998 07 26 22 40.18 -15 19.4 0.608 1.559 146.5 21.1 18.4
1998 07 31 22 32.00 -16 46.1 0.625 1.598 153.3 16.6 18.4
1998 08 05 22 23.34 -18 07.9 0.647 1.638 160.0 12.2 18.4
1998 08 10 22 14.53 -19 22.2 0.675 1.677 166.2 8.3 18.3
1998 08 15 22 05.91 -20 27.3 0.708 1.715 170.8 5.4 18.4
1998 08 20 21 57.77 -21 21.9 0.746 1.753 171.2 5.1 18.5
1998 08 25 21 50.39 -22 05.6 0.791 1.791 167.4 7.1 18.8
1998 08 30 21 43.97 -22 38.7 0.841 1.828 162.1 9.8 19.1
1998 09 04 21 38.61 -23 02.0 0.896 1.865 156.6 12.4 19.4
1998 09 09 21 34.38 -23 16.4 0.956 1.901 151.1 14.9 19.6
1998 09 14 21 31.25 -23 23.1 1.020 1.936 145.7 17.0 19.9
1998 09 19 21 29.19 -23 23.0 1.089 1.971 140.6 18.9 20.1
1998 09 24 21 28.15 -23 17.2 1.162 2.006 135.6 20.5 20.4
1998 09 29 21 28.04 -23 06.5 1.238 2.040 130.9 21.8 20.6
1998 10 04 21 28.80 -22 51.6 1.318 2.073 126.3 22.9 20.8
1998 10 09 21 30.31 -22 33.1 1.400 2.106 121.9 23.8 21.0
1998 10 14 21 32.51 -22 11.5 1.485 2.138 117.6 24.4 21.1
1998 10 19 21 35.31 -21 47.1 1.572 2.170 113.4 24.9 21.3
1998 10 24 21 38.65 -21 20.4 1.661 2.201 109.4 25.2 21.5
1998 10 29 21 42.46 -20 51.5 1.751 2.232 105.4 25.4 21.6
1998 11 03 21 46.69 -20 20.7 1.843 2.262 101.6 25.4 21.8
1998 11 08 21 51.28 -19 48.2 1.936 2.292 97.8 25.4 21.9
1998 11 13 21 56.19 -19 14.1 2.029 2.321 94.1 25.2 22.0
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-B18
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