MPEC 2000-O22 : COMET C/2000 O1 = 1998 XA70 = 1999 UJ10 (KOEHN)
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M.P.E.C. 2000-O22 Issued 2000 July 25, 15:16 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.
Prepared using the Tamkin Foundation Computer Network
BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
COMET C/2000 O1 = 1998 XA70 = 1999 UJ10 (KOEHN)
Observations:
CK00O010 C1998 12 14.24572 04 33 16.35 +33 13 26.6 18.8 N 704
CK00O010 C1998 12 14.26764 04 33 14.78 +33 13 28.1 19.2 N 704
CK00O010 C1998 12 14.28975 04 33 12.89 +33 13 29.3 19.4 N 704
CK00O010 C1998 12 14.31177 04 33 11.27 +33 13 26.6 19.2 N 704
CK00O010 C1998 12 17.18172 04 29 39.92 +33 13 30.8 18.2 N 704
CK00O010 C1998 12 17.20502 04 29 38.19 +33 13 30.7 18.6 N 704
CK00O010 C1998 12 17.22827 04 29 36.44 +33 13 31.1 18.8 N 704
CK00O010 C1998 12 17.25138 04 29 34.62 +33 13 32.0 19.6 N 704
CK00O010 C1998 12 17.27465 04 29 32.98 +33 13 30.3 18.8 N 704
CK00O010 C1999 10 31.27743 02 27 21.52 +43 00 10.5 19.0 N 704
CK00O010 C1999 10 31.29360 02 27 20.01 +43 00 07.0 19.2 N 704
CK00O010 C1999 10 31.31006 02 27 18.30 +43 00 04.0 18.8 N 704
CK00O010 C1999 11 01.24233 02 25 47.28 +42 57 24.1 18.3 N 704
CK00O010 C1999 11 01.25880 02 25 45.68 +42 57 21.2 18.4 N 704
CK00O010 C1999 11 01.29173 02 25 42.42 +42 57 14.8 18.4 N 704
CK00O010 C1999 11 01.30817 02 25 40.80 +42 57 11.1 18.2 N 704
CK00O010 C1999 12 13.13058 01 26 43.44 +38 49 49.7 18.9 N 704
CK00O010 C1999 12 13.14513 01 26 42.49 +38 49 42.4 19.3 N 704
CK00O010 C1999 12 13.15969 01 26 41.62 +38 49 36.9 19.4 N 704
CK00O010 C1999 12 13.18872 01 26 39.79 +38 49 22.2 18.8 N 704
CK00O010 C2000 07 20.36467 01 03 24.38 +39 53 01.6 17.6 T 699
CK00O010 C2000 07 20.38693 01 03 23.33 +39 53 04.7 699
CK00O010 C2000 07 20.39803 01 03 23.02 +39 53 07.6 699
CK00O010 C2000 07 22.07410 01 02 18.03 +39 59 08.6 611
CK00O010 C2000 07 22.08600 01 02 17.42 +39 59 09.5 611
CK00O010 C2000 07 22.97988 01 01 41.57 +40 02 18.3 17.9 T 046
CK00O010 C2000 07 22.99126 01 01 41.11 +40 02 20.1 046
CK00O010 C2000 07 23.37434 01 01 25.93 +40 03 38.3 739
CK00O010 C2000 07 23.39039 01 01 24.65 +40 03 41.9 18.7 N 739
CK00O010 C2000 07 23.91348 01 01 03.22 +40 05 29.3 557
CK00O010 C2000 07 23.91581 01 01 03.18 +40 05 30.0 557
Observer details:
046 Klet. Observers J. Ticha, M. Tichy. 0.57-m f/5.2 reflector + CCD.
557 Ondrejov. Observer P. Pravec. 0.65-m f/3.6 reflector + CCD.
611 Starkenburg. Observers M. Busch, R. Kresken. 0.45-m f/4.4 reflector
+ CCD.
699 Lowell Observatory-LONEOS. Observer B. W. Koehn. 0.59-m LONEOS Schmidt
+ CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, F. Shelly,
M. Bezpalko, M. Elowitz, R. Huber, L. Manguso. Measurers J. Stuart,
R. Sayer, J. B. Evans, H. Viggh. 1.0-m f/2.15 reflector + CCD.
739 Sunflower Observatory, Olathe. Observer L. Robinson. 0.25-m
Schmidt-Cassegrain + CCD.
Orbital elements:
C/2000 O1 = 1998 XA70 = 1999 UJ10 (Koehn)
Epoch 2000 Jan. 17.0 TT = JDT 2451560.5
T 2000 Jan. 27.34855 TT Marsden
q 5.9218889 (2000.0) P Q
z -0.0001445 Peri. 55.10855 +0.70756040 +0.46923450
+/-0.0000094 Node 88.86217 +0.33960438 -0.88150044
e 1.0008554 Incl. 148.09742 +0.61969924 -0.05268740
Residuals in seconds of arc
981214 704 0.3+ 1.7- 991031 704 0.8- 0.5- 000720 699 0.4+ 0.6-
981214 704 1.2+ 0.4- 991101 704 0.1+ 0.6+ 000722 611 1.2+ 0.9+
981214 704 1.8- 0.7+ 991101 704 0.4+ 0.6+ 000722 611 0.3- 0.7-
981214 704 (1.5- 2.2-) 991101 704 0.3+ 0.0 000722 046 0.3- 1.0+
981217 704 0.7+ 0.1- 991101 704 0.3+ 0.7- 000722 046 0.2- 0.4+
981217 704 0.7+ 0.1- 991213 704 0.1+ 0.2+ 000723 739 (5.3+ 1.1-)
981217 704 0.3+ 0.5+ 991213 704 0.3- 0.6- 000723 739 1.8- 0.8-
981217 704 1.1- 1.5+ 991213 704 0.3+ 0.5+ 000723 557 0.2- 0.2+
981217 704 0.1- 0.1- 991213 704 0.3+ 1.2- 000723 557 0.5+ 0.5+
991031 704 0.7- 0.5+ 000720 699 1.4+ 0.8+
991031 704 0.2+ 0.3- 000720 699 0.9- 1.0-
Ephemeris:
C/2000 O1 (Koehn)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2000 07 15 01 06.55 +39 32.7 6.093 6.041 82.3 9.6 17.7
2000 07 25 01 00.29 +40 09.1 5.945 6.056 91.4 9.7 17.7
2000 08 04 00 52.29 +40 38.0 5.801 6.071 100.6 9.5 17.7
2000 08 14 00 42.55 +40 56.1 5.668 6.086 109.8 9.0 17.6
2000 08 24 00 31.21 +41 00.3 5.550 6.103 118.9 8.3 17.6
2000 09 03 00 18.55 +40 47.7 5.454 6.120 127.5 7.5 17.6
2000 09 13 00 05.04 +40 16.2 5.385 6.138 135.0 6.7 17.5
2000 09 23 23 51.27 +39 25.2 5.349 6.157 140.6 5.9 17.5
2000 10 03 23 37.85 +38 16.0 5.347 6.177 143.2 5.6 17.5
2000 10 13 23 25.37 +36 51.7 5.381 6.197 141.9 5.7 17.6
2000 10 23 23 14.29 +35 16.8 5.450 6.218 137.2 6.2 17.6
2000 11 02 23 04.89 +33 36.6 5.553 6.239 130.2 7.0 17.7
2000 11 12 22 57.29 +31 56.2 5.684 6.262 121.8 7.7 17.7
2000 11 22 22 51.47 +30 19.9 5.838 6.285 112.6 8.3 17.8
2000 12 02 22 47.33 +28 51.1 6.010 6.308 103.2 8.8 17.9
2000 12 12 22 44.70 +27 32.2 6.192 6.333 93.7 8.9 18.0
2000 12 22 22 43.38 +26 24.4 6.379 6.357 84.3 8.9 18.1
2001 01 01 22 43.17 +25 28.3 6.564 6.383 75.1 8.6 18.1
2001 01 11 22 43.88 +24 43.8 6.743 6.409 66.2 8.1 18.2
2001 01 21 22 45.32 +24 10.5 6.909 6.436 57.6 7.4 18.3
2001 01 31 22 47.31 +23 47.7 7.059 6.463 49.6 6.7 18.3
2001 02 10 22 49.68 +23 34.6 7.189 6.491 42.2 5.9 18.4
2001 02 20 22 52.29 +23 30.2 7.297 6.520 35.7 5.1 18.5
2001 03 02 22 55.01 +23 33.6 7.380 6.549 30.8 4.4 18.5
Barycentric "original" and "future" values of 1/a are +0.000025 and
+0.000099 AU**-1, respectively.
Brian G. Marsden (C) Copyright 2000 MPC M.P.E.C. 2000-O22
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