MPEC 1998-C09 : 1998 BY7
The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.A form allowing access to any MPEC is at the bottom of this page.
Read MPEC 1998-C08
Read MPEC 1998-C10
M.P.E.C. 1998-C09 Issued 1998 Feb. 4, 19:30 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
Revision to MPEC 1998-B17
Observations:
J98B07Y C1998 01 27.01834 09 13 04.55 +17 48 46.6 18.8 V 046
J98B07Y C1998 01 27.02076 09 13 04.58 +17 48 49.1 046
J98B07Y C1998 01 27.02310 09 13 04.58 +17 48 52.1 046
J98B07Y C1998 01 27.15157 09 13 04.91 +17 51 04.5 19.1 R 118
J98B07Y C1998 01 27.15677 09 13 04.94 +17 51 10.2 118
J98B07Y C1998 01 27.16112 09 13 04.95 +17 51 14.0 118
J98B07Y C1998 01 28.06102 09 13 16.63 +18 07 56.8 557
J98B07Y C1998 01 29.67726 09 13 36.49 +18 41 47.0 18.7 V 360
J98B07Y C1998 01 29.68212 09 13 36.48 +18 41 53.2 360
J98B07Y C1998 01 29.68715 09 13 36.46 +18 41 59.8 360
J98B07Y C1998 01 31.64375 09 14 01.48 +19 30 11.0 18.5 V 360
J98B07Y C1998 01 31.64826 09 14 01.46 +19 30 18.3 360
J98B07Y C1998 01 31.65243 09 14 01.44 +19 30 25.0 360
J98B07Y C1998 01 31.95471 09 14 05.73 +19 38 31.0 18.4 V 046
J98B07Y C1998 01 31.95663 09 14 05.83 +19 38 34.0 046
J98B07Y C1998 01 31.95795 09 14 05.79 +19 38 36.7 046
J98B07Y C1998 02 01.50549 09 14 14.54 +19 55 19.3 18.1 R 422
J98B07Y IC1998 02 01.50706 09 14 14.58 +19 55 22.5 422
J98B07Y C1998 02 01.54410 09 14 15.11 +19 55 34.7 17.7 V 367
J98B07Y C1998 02 01.55104 09 14 15.21 +19 55 45.5 367
J98B07Y C1998 02 01.81429 09 14 19.23 +20 03 25.6 557
J98B07Y C1998 02 01.81661 09 14 19.21 +20 03 30.2 18.4 V 557
J98B07Y C1998 02 01.81894 09 14 19.21 +20 03 34.7 557
J98B07Y C1998 02 02.04362 09 14 19.42 +20 10 34.5 18.8 R 118
J98B07Y C1998 02 02.04572 09 14 19.35 +20 10 38.2 118
J98B07Y C1998 02 02.04845 09 14 19.36 +20 10 43.1 118
J98B07Y C1998 02 02.61493 09 14 29.56 +20 29 07.9 18.2 V 360
J98B07Y C1998 02 02.61806 09 14 29.54 +20 29 14.1 360
J98B07Y C1998 02 02.62326 09 14 29.51 +20 29 24.5 360
J98B07Y C1998 02 03.92032 09 14 51.22 +21 15 14.5 17.7 V 046
J98B07Y C1998 02 03.92208 09 14 51.22 +21 15 18.2 046
J98B07Y C1998 02 03.92359 09 14 51.22 +21 15 21.7 046
Observer details:
046 Klet. Observers J. Ticha, M. Tichy, Z. Moravec. Measurer M. Tichy.
0.57-m f/5.2 reflector + CCD.
118 Modra. Observers P. Koleny, L. Kornos. 0.6-m f/5.5 reflector + CCD.
360 Kuma Kogen. Observer A. Nakamura. 0.60-m f/6.0 Ritchey-Chretien + CCD.
367 Yatsuka. Observer H. Abe. 0.26-m f/6.0 reflector + CCD.
422 Loomberah. Observer G. J. Garradd. 0.25-m f/4.1 reflector + CCD.
557 Ondrejov. Observers P. Pravec, L. Sarounova. 0.65-m f/3.6 reflector
+ CCD.
Orbital elements:
1998 BY7
Epoch 1998 Jan. 27.0 TT = JDT 2450840.5 Williams
M 337.18495 (2000.0) P Q
n 0.34887342 Peri. 88.97567 -0.84598850 +0.53105748
a 1.9984385 Node 123.09962 -0.50907472 -0.77782028
e 0.5971117 Incl. 3.26859 -0.15857614 -0.33611540
P 2.83 H 21.5 G 0.15
From 48 observations 1998 Jan. 22-Feb. 3.
Ephemeris:
1998 BY7 a,e,i = 2.00, 0.60, 3 q = 0.8051
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 01 27 09 13.08 +17 48.8 0.224 1.206 171.4 7.0 19.2
1998 01 28 09 13.28 +18 07.2 0.214 1.197 172.4 6.3 19.0
1998 01 29 09 13.48 +18 27.3 0.204 1.188 173.3 5.5 18.9
1998 01 30 09 13.68 +18 49.3 0.195 1.179 174.2 4.9 18.7
1998 01 31 09 13.88 +19 13.5 0.186 1.170 174.9 4.3 18.6
1998 02 01 09 14.10 +19 40.2 0.177 1.161 175.4 3.9 18.4
1998 02 02 09 14.33 +20 09.6 0.167 1.152 175.6 3.8 18.3
1998 02 03 09 14.58 +20 42.3 0.158 1.144 175.4 3.9 18.2
1998 02 04 09 14.86 +21 18.7 0.150 1.135 174.9 4.4 18.0
1998 02 05 09 15.18 +21 59.5 0.141 1.126 174.0 5.2 17.9
1998 02 06 09 15.54 +22 45.4 0.132 1.117 173.0 6.2 17.8
1998 02 07 09 15.97 +23 37.4 0.123 1.108 171.7 7.4 17.7
1998 02 08 09 16.47 +24 36.8 0.115 1.100 170.2 8.7 17.6
1998 02 09 09 17.08 +25 45.2 0.106 1.091 168.6 10.3 17.5
1998 02 10 09 17.82 +27 04.8 0.098 1.082 166.9 12.0 17.4
1998 02 11 09 18.73 +28 38.5 0.090 1.074 164.8 13.9 17.2
1998 02 12 09 19.87 +30 30.1 0.082 1.065 162.6 16.1 17.1
1998 02 13 09 21.35 +32 45.3 0.074 1.057 159.9 18.7 16.9
1998 02 14 09 23.31 +35 31.6 0.066 1.048 156.9 21.7 16.8
1998 02 15 09 26.01 +39 00.5 0.058 1.040 153.1 25.4 16.6
1998 02 16 09 29.94 +43 28.2 0.051 1.032 148.4 30.1 16.4
1998 02 17 09 36.13 +49 18.7 0.044 1.024 142.4 36.0 16.3
1998 02 18 09 47.23 +57 04.7 0.038 1.015 134.6 43.9 16.1
1998 02 19 10 12.49 +67 20.2 0.033 1.007 124.1 54.4 16.1
1998 02 20 11 53.5 +79 30.9 0.029 0.999 110.5 67.9 16.2
1998 02 21 18 27.4 +78 39.1 0.028 0.991 94.5 83.9 16.6
1998 02 22 20 04.32 +63 23.7 0.029 0.984 78.2 100.2 17.4
1998 02 23 20 29.10 +49 06.5 0.032 0.976 64.3 114.0 18.4
1998 02 24 20 40.15 +37 49.0 0.037 0.968 53.7 124.5 19.5
1998 02 25 20 46.41 +29 20.4 0.043 0.961 46.2 132.0 20.5
1998 02 26 20 50.48 +23 00.5 0.049 0.953 41.0 137.1 21.3
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-C09
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