MPEC 1998-Y03 : 1998 XD9
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M.P.E.C. 1998-Y03 Issued 1998 Dec. 16, 16:03 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 XD9
Observations:
J98X09D* C1998 12 14.33543 05 45 54.54 +23 24 58.9 18.4 704
J98X09D C1998 12 14.35723 05 45 53.92 +23 25 53.5 704
J98X09D C1998 12 14.37899 05 45 53.31 +23 26 48.2 17.5 704
J98X09D C1998 12 14.40081 05 45 52.84 +23 27 43.2 18.0 704
J98X09D C1998 12 14.42262 05 45 52.25 +23 28 37.6 704
J98X09D C1998 12 15.76753 05 45 30.80 +24 25 47.3 557
J98X09D C1998 12 15.76941 05 45 30.76 +24 25 52.1 16.8 V 557
J98X09D C1998 12 15.77714 05 45 30.59 +24 26 14.8 16.7 R 540
J98X09D C1998 12 15.77919 05 45 30.60 +24 26 18.6 540
J98X09D C1998 12 15.78061 05 45 30.63 +24 26 22.2 540
J98X09D C1998 12 15.78206 05 45 30.52 +24 26 26.3 540
J98X09D C1998 12 15.81740 05 45 29.80 +24 27 59.5 587
J98X09D C1998 12 15.82156 05 45 29.71 +24 28 09.0 587
J98X09D C1998 12 15.82523 05 45 29.56 +24 28 18.1 557
J98X09D C1998 12 15.82708 05 45 29.59 +24 28 22.7 16.5 R 611
J98X09D C1998 12 15.83056 05 45 29.48 +24 28 30.3 611
J98X09D C1998 12 15.83706 05 45 29.37 +24 28 50.3 106
J98X09D C1998 12 15.84887 05 45 29.05 +24 29 21.8 106
J98X09D C1998 12 15.87203 05 45 28.52 +24 30 22.2 106
J98X09D C1998 12 15.88360 05 45 28.24 +24 30 51.5 106
J98X09D C1998 12 15.98248 05 45 25.74 +24 35 07.3 16.4 V 046
J98X09D C1998 12 15.98720 05 45 25.62 +24 35 19.7 046
J98X09D C1998 12 15.98831 05 45 25.59 +24 35 22.4 046
J98X09D C1998 12 15.98955 05 45 25.56 +24 35 25.8 046
J98X09D C1998 12 16.08566 05 45 25.34 +24 39 34.3 16.6 704
J98X09D C1998 12 16.09371 05 45 25.24 +24 39 54.7 17.2 704
J98X09D C1998 12 16.10212 05 45 25.00 +24 40 17.6 17.0 704
J98X09D C1998 12 16.11037 05 45 24.82 +24 40 39.6 16.8 704
J98X09D C1998 12 16.11876 05 45 24.57 +24 41 01.3 16.9 704
J98X09D C1998 12 16.19896 05 45 22.20 +24 44 35.8 16.3 R 761
J98X09D C1998 12 16.21007 05 45 21.81 +24 45 06.7 761
J98X09D C1998 12 16.31424 05 45 19.92 +24 49 33.7 670
J98X09D C1998 12 16.32674 05 45 19.54 +24 50 07.2 670
J98X09D C1998 12 16.33941 05 45 19.24 +24 50 39.2 670
J98X09D C1998 12 16.35573 05 45 18.79 +24 51 22.7 16.3 V 670
J98X09D C1998 12 16.58102 05 45 15.13 +25 01 31.7 16.0 R 426
J98X09D C1998 12 16.58843 05 45 14.94 +25 01 50.9 15.9 R 426
J98X09D C1998 12 16.59216 05 45 14.84 +25 02 01.0 16.0 R 426
J98X09D C1998 12 16.59544 05 45 14.75 +25 02 09.3 16.1 R 426
Observer details:
046 Klet. Observers M. Tichy, Z. Moravec. Measurer M. Tichy. 0.57-m f/5.2
reflector + CCD.
106 Crni Vrh. Observer H. Mikuz. 0.36-m f/6.7 Schmidt-Cassegrain + CCD.
426 Woomera. Observer F. B. Zoltowski. 0.30-m f/3.3 Schmidt-Cassegrain + 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.
611 Starkenburg. Observers S. Kluegl, E. Schwab, J. Rothermel. Measurer
R. Stoss. 0.45-m f/4.4 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.
761 Zephyrhills. Observer R. A. Kowalski. 0.178-m f/9.45 reflector + CCD.
Orbital elements:
1998 XD9
Epoch 1998 Dec. 13.0 TT = JDT 2451160.5 Williams
M 351.39912 (2000.0) P Q
n 0.23526200 Peri. 27.33271 -0.33764464 -0.90273614
a 2.5987721 Node 83.42238 +0.80716012 -0.42338019
e 0.4926040 Incl. 15.56574 +0.48424028 +0.07626707
P 4.19 H 17.8 G 0.15
From 39 observations 1998 Dec. 14-16.
Ephemeris:
1998 XD9 a,e,i = 2.60, 0.49, 16 q = 1.3186
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 12 13 05 46.27 +22 29.4 0.390 1.373 173.9 4.4 16.8
1998 12 23 05 43.07 +29 48.8 0.367 1.348 172.1 5.8 16.7
1999 01 02 05 40.40 +37 20.3 0.364 1.330 159.5 15.0 17.1
1999 01 12 05 41.37 +43 59.9 0.379 1.320 148.1 23.2 17.4
1999 01 22 05 48.99 +49 07.9 0.409 1.319 138.7 29.5 17.7
1999 02 01 06 05.05 +52 34.8 0.450 1.326 131.4 33.9 18.1
1999 02 11 06 29.04 +54 25.9 0.499 1.341 125.8 36.6 18.4
1999 02 21 06 58.80 +54 49.8 0.556 1.364 121.5 38.2 18.7
1999 03 03 07 31.37 +53 58.3 0.619 1.394 118.1 38.9 19.0
1999 03 13 08 03.91 +52 04.8 0.690 1.430 115.1 39.0 19.3
1999 03 23 08 34.76 +49 23.7 0.768 1.472 112.4 38.8 19.6
1999 04 02 09 03.24 +46 09.8 0.855 1.518 109.7 38.3 19.9
1999 04 12 09 29.23 +42 35.5 0.950 1.568 106.8 37.7 20.2
1999 04 22 09 53.04 +38 50.5 1.054 1.621 103.8 37.0 20.5
1999 05 02 10 15.04 +35 02.2 1.167 1.676 100.6 36.2 20.7
1999 05 12 10 35.56 +31 15.9 1.289 1.734 97.1 35.3 21.0
1999 05 22 10 54.93 +27 34.6 1.419 1.792 93.5 34.3 21.3
1999 06 01 11 13.39 +24 00.6 1.557 1.852 89.6 33.2 21.5
1999 06 11 11 31.13 +20 35.1 1.701 1.912 85.6 32.0 21.7
1999 06 21 11 48.32 +17 18.4 1.850 1.973 81.4 30.6 21.9
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-Y03
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