MPEC 1998-Y02 : 1998 XB9
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M.P.E.C. 1998-Y02 Issued 1998 Dec. 16, 15:49 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 XB9
Observations:
J98X09B* C1998 12 12.38124 07 30 07.24 +51 49 16.8 17.6 704
J98X09B C1998 12 12.39546 07 30 06.71 +51 49 07.7 704
J98X09B C1998 12 12.40987 07 30 06.26 +51 48 57.6 17.9 704
J98X09B C1998 12 12.42387 07 30 05.85 +51 48 48.2 17.9 704
J98X09B C1998 12 12.43780 07 30 05.32 +51 48 39.5 17.9 704
J98X09B C1998 12 14.94962 07 28 49.76 +51 20 39.7 17.1 R 151
J98X09B C1998 12 14.95818 07 28 49.35 +51 20 34.2 17.2 R 151
J98X09B C1998 12 14.96512 07 28 49.11 +51 20 28.7 17.0 R 151
J98X09B C1998 12 14.96909 07 28 48.95 +51 20 26.7 17.2 R 151
J98X09B IC1998 12 15.79790 07 28 18.85 +51 10 23.3 16.9 R 540
J98X09B IC1998 12 15.80433 07 28 18.46 +51 10 16.7 540
J98X09B C1998 12 15.80752 07 28 18.15 +51 10 14.3 17.2 V 557
J98X09B IC1998 12 15.81017 07 28 17.82 +51 10 11.0 540
J98X09B C1998 12 15.82284 07 28 17.53 +51 10 03.7 557
J98X09B C1998 12 15.84833 07 28 16.74 +51 09 46.6 587
J98X09B C1998 12 15.85711 07 28 16.40 +51 09 40.8 587
J98X09B C1998 12 15.94968 07 28 12.11 +51 08 35.8 16.7 V 046
J98X09B C1998 12 15.95203 07 28 12.01 +51 08 34.1 046
J98X09B C1998 12 15.95509 07 28 11.87 +51 08 32.0 046
J98X09B C1998 12 16.36806 07 27 55.09 +51 03 28.5 670
J98X09B C1998 12 16.38333 07 27 54.28 +51 03 16.8 670
J98X09B C1998 12 16.41302 07 27 52.94 +51 02 53.5 17.1 V 670
Observer details:
046 Klet. Observers M. Tichy, Z. Moravec. Measurer M. Tichy. 0.57-m f/5.2
reflector + CCD.
151 Eschenberg Observatory, Winterthur. Observer M. Griesser. 0.25-m f/8.0
reflector + CCD.
540 Linz. Observer E. Meyer. 0.3-m f/5.2 Schmidt-Cassegrain + CCD.
557 Ondrejov. Observer P. Pravec. 0.65-m f/3.6 reflector + CCD.
587 Sormano. Observers P. Sicoli, A. Testa. 0.5-m reflector + CCD.
670 Camarillo. Observer J. E. Rogers. 0.25-m Schmidt-Cassegrain + CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, F. Shelly,
M. Bezpalko. Measurers J. Stuart, H. Viggh, R. Sayer. 1.0-m f/2.15
reflector + CCD.
Orbital elements:
1998 XB9
Epoch 1998 Dec. 13.0 TT = JDT 2451160.5 Williams
M 7.07547 (2000.0) P Q
n 0.22656820 Peri. 105.07674 +0.38988036 -0.90959603
a 2.6648335 Node 320.97519 +0.73274537 +0.40090231
e 0.4708654 Incl. 13.18534 +0.55774325 +0.10914398
P 4.35 H 16.6 G 0.15
From 22 observations 1998 Dec. 12-16.
Ephemeris:
1998 XB9 a,e,i = 2.66, 0.47, 13 q = 1.4101
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 12 13 07 29.85 +51 42.6 0.534 1.444 142.1 24.8 17.2
1998 12 23 07 22.31 +49 27.6 0.531 1.468 149.8 19.7 17.1
1999 01 02 07 11.73 +46 18.2 0.544 1.497 156.2 15.4 17.0
1999 01 12 07 02.02 +42 28.6 0.574 1.532 158.3 13.7 17.1
1999 01 22 06 55.81 +38 23.2 0.624 1.571 154.7 15.5 17.4
1999 02 01 06 54.19 +34 26.9 0.693 1.614 147.8 19.0 17.8
1999 02 11 06 56.89 +30 55.1 0.780 1.661 139.8 22.6 18.2
1999 02 21 07 03.24 +27 52.1 0.883 1.710 131.9 25.5 18.7
1999 03 03 07 12.48 +25 16.0 1.000 1.761 124.3 27.7 19.1
1999 03 13 07 23.84 +23 01.7 1.129 1.814 117.2 29.2 19.4
1999 03 23 07 36.77 +21 03.6 1.268 1.868 110.6 30.0 19.8
1999 04 02 07 50.84 +19 16.5 1.416 1.923 104.2 30.2 20.1
1999 04 12 08 05.67 +17 36.6 1.570 1.979 98.2 30.1 20.4
1999 04 22 08 21.02 +16 00.7 1.729 2.035 92.3 29.6 20.6
1999 05 02 08 36.69 +14 26.7 1.892 2.091 86.6 28.8 20.9
1999 05 12 08 52.52 +12 53.1 2.057 2.147 81.1 27.7 21.1
1999 05 22 09 08.41 +11 18.8 2.223 2.203 75.7 26.4 21.2
1999 06 01 09 24.29 +09 43.2 2.388 2.259 70.3 25.0 21.4
1999 06 11 09 40.08 +08 06.1 2.551 2.314 65.0 23.4 21.6
1999 06 21 09 55.77 +06 27.3 2.711 2.368 59.8 21.8 21.7
1999 07 01 10 11.31 +04 46.8 2.867 2.422 54.5 20.0 21.8
1999 07 11 10 26.69 +03 04.8 3.016 2.475 49.3 18.1 21.9
1999 07 21 10 41.92 +01 21.5 3.158 2.528 44.0 16.2 22.0
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-Y02
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