MPEC 1998-B17: 1998 BY7
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M.P.E.C. 1998-B17 Issued 1998 Jan. 26, 16:01 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 BY7
Observations:
J98B07Y* C1998 01 22.33297 09 12 02.69 +16 41 16.3 19.7 V 691
J98B07Y C1998 01 22.35521 09 12 02.74 +16 41 31.8 19.9 V 691
J98B07Y C1998 01 22.37712 09 12 02.80 +16 41 47.7 19.7 V 691
J98B07Y C1998 01 23.36856 09 12 17.14 +16 53 58.3 19.4 V 691
J98B07Y C1998 01 23.37454 09 12 17.15 +16 54 02.8 19.6 V 691
J98B07Y C1998 01 23.38046 09 12 17.16 +16 54 07.3 19.5 V 691
J98B07Y C1998 01 24.37394 09 12 30.81 +17 07 25.5 19.5 V 691
J98B07Y C1998 01 24.38014 09 12 30.80 +17 07 31.0 19.3 V 691
J98B07Y C1998 01 24.38999 09 12 30.82 +17 07 38.4 19.2 V 691
J98B07Y C1998 01 25.31184 09 12 43.92 +17 21 04.3 19.4 V 691
J98B07Y C1998 01 25.33380 09 12 43.89 +17 21 24.8 19.2 V 691
J98B07Y C1998 01 25.35639 09 12 43.95 +17 21 45.4 19.3 V 691
J98B07Y C1998 01 25.95225 09 12 52.16 +17 30 52.3 557
J98B07Y C1998 01 25.95500 09 12 52.16 +17 30 55.1 19.3 V 557
J98B07Y C1998 01 25.96295 09 12 52.14 +17 31 03.2 557
J98B07Y C1998 01 25.96567 09 12 52.13 +17 31 05.0 557
Observer details:
557 Ondrejov. Observer P. Pravec. 0.65-m f/3.6 reflector + CCD.
691 Steward Observatory, Kitt Peak. Observers J. Larsen, J. Montani. 0.9-m
Spacewatch telescope.
Orbital elements:
1998 BY7
Epoch 1998 Jan. 7.0 TT = JDT 2450820.5 Williams
M 335.74860 (2000.0) P Q
n 0.28726871 Peri. 88.95641 -0.84387565 +0.53403122
a 2.2748032 Node 123.31985 -0.51362775 -0.77614727
e 0.6511055 Incl. 3.55491 -0.15511424 -0.33527014
P 3.43 H 21.0 G 0.15
From 16 observations 1998 Jan. 22-25.
Ephemeris:
1998 BY7 a,e,i = 2.27, 0.65, 4 q = 0.7937
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 01 17 09 10.54 +15 51.2 0.351 1.321 161.4 13.7 20.1
1998 01 18 09 10.85 +15 59.0 0.340 1.311 162.4 13.1 20.0
1998 01 19 09 11.15 +16 07.4 0.328 1.302 163.4 12.5 19.9
1998 01 20 09 11.43 +16 16.6 0.317 1.292 164.4 11.8 19.8
1998 01 21 09 11.70 +16 26.6 0.306 1.282 165.4 11.2 19.7
1998 01 22 09 11.96 +16 37.5 0.295 1.272 166.4 10.5 19.5
1998 01 23 09 12.20 +16 49.4 0.284 1.263 167.4 9.8 19.4
1998 01 24 09 12.43 +17 02.4 0.273 1.253 168.4 9.1 19.3
1998 01 25 09 12.66 +17 16.5 0.262 1.243 169.4 8.4 19.1
1998 01 26 09 12.87 +17 31.9 0.252 1.233 170.4 7.6 19.0
1998 01 27 09 13.08 +17 48.8 0.241 1.224 171.4 6.9 18.9
1998 01 28 09 13.28 +18 07.1 0.231 1.214 172.4 6.2 18.7
1998 01 29 09 13.49 +18 27.2 0.220 1.204 173.3 5.5 18.6
1998 01 30 09 13.69 +18 49.2 0.210 1.194 174.1 4.8 18.4
1998 01 31 09 13.90 +19 13.4 0.200 1.185 174.9 4.3 18.3
1998 02 01 09 14.13 +19 40.1 0.190 1.175 175.4 3.9 18.1
1998 02 02 09 14.36 +20 09.5 0.181 1.166 175.6 3.7 18.0
1998 02 03 09 14.62 +20 42.2 0.171 1.156 175.4 3.9 17.8
1998 02 04 09 14.91 +21 18.6 0.161 1.146 174.9 4.4 17.7
1998 02 05 09 15.24 +21 59.4 0.152 1.137 174.0 5.2 17.6
1998 02 06 09 15.62 +22 45.3 0.142 1.127 173.0 6.2 17.5
1998 02 07 09 16.06 +23 37.4 0.133 1.118 171.7 7.3 17.4
1998 02 08 09 16.58 +24 36.9 0.124 1.109 170.3 8.7 17.3
1998 02 09 09 17.20 +25 45.5 0.115 1.099 168.6 10.2 17.2
1998 02 10 09 17.96 +27 05.3 0.106 1.090 166.9 11.9 17.0
1998 02 11 09 18.90 +28 39.2 0.097 1.081 164.8 13.8 16.9
1998 02 12 09 20.08 +30 31.3 0.088 1.071 162.6 16.0 16.7
1998 02 13 09 21.60 +32 47.0 0.079 1.062 159.9 18.6 16.6
1998 02 14 09 23.61 +35 34.3 0.071 1.053 156.8 21.7 16.4
1998 02 15 09 26.40 +39 04.4 0.063 1.044 153.1 25.4 16.2
1998 02 16 09 30.46 +43 34.1 0.055 1.035 148.4 30.0 16.1
1998 02 17 09 36.88 +49 27.6 0.048 1.026 142.3 36.1 15.9
1998 02 18 09 48.44 +57 17.8 0.041 1.017 134.4 44.0 15.8
1998 02 19 10 15.04 +67 38.5 0.035 1.009 123.8 54.6 15.8
1998 02 20 12 03.7 +79 46.1 0.032 1.000 110.1 68.2 15.9
1998 02 21 18 32.3 +78 04.6 0.030 0.991 93.9 84.3 16.3
1998 02 22 20 04.43 +62 45.8 0.031 0.983 77.7 100.6 17.1
1998 02 23 20 28.81 +48 33.5 0.035 0.975 63.8 114.3 18.1
1998 02 24 20 39.81 +37 22.3 0.040 0.966 53.4 124.7 19.2
1998 02 25 20 46.08 +28 59.3 0.046 0.958 46.0 132.1 20.2
1998 02 26 20 50.18 +22 43.6 0.053 0.950 40.8 137.1 21.0
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-B17
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