MPEC 2003-Y87 : 1998 KJ9
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M.P.E.C. 2003-Y87 Issued 2003 Dec. 29, 11:22 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.
Supported in part by the Steven and Michele Kirsch Foundation
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
1998 KJ9
Revision to MPEC 1998-K31
Additional Observations:
J98K09J C2003 12 28.40544 11 17 51.49 +14 01 24.8 19.3 EY087704
J98K09J C2003 12 28.43143 11 17 46.95 +14 02 35.7 19.8 EY087704
J98K09J C2003 12 28.44457 11 17 44.69 +14 03 11.4 20.2 EY087704
J98K09J C2003 12 28.45767 11 17 42.35 +14 03 46.9 20.1 EY087704
J98K09J C2003 12 29.32525 11 15 16.11 +14 42 41.5 19.9 R EY087854
J98K09J C2003 12 29.33186 11 15 14.79 +14 42 58.3 19.7 R EY087854
J98K09J C2003 12 29.33847 11 15 13.69 +14 43 15.7 19.6 R EY087854
Observer details:
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, F. Shelly,
M. Bezpalko, R. Huber, L. Manguso, D. Torres, R. Kracke, M. McCleary,
H. Stange, A. Milner. Measurers J. Stuart, R. Sayer, J. Evans, J. Kommers.
1.0-m f/2.15 reflector + CCD.
854 Sabino Canyon Observatory, Tucson. Observer J. E. McGaha. 0.356-m f/10.0
Schmidt-Cassegrain + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
031228 704 0.13- 0.46+ 031229 854 0.22+ 0.18+ MPC 32333 -5.4 day
Orbital elements:
1998 KJ9 PHA 0.035A
Epoch 2003 Dec. 27.0 TT = JDT 2453000.5 MPC
M 37.42226 (2000.0) P Q
n 0.56554797 Peri. 259.74097 +0.98204535 +0.02131960
a 1.4481818 Node 98.85429 +0.04923565 +0.93018846
e 0.6398942 Incl. 10.93510 -0.18210651 +0.36646269
P 1.74 H 19.4 G 0.15 U 3
Residuals in seconds of arc
980527 704 0.8+ 0.7- 980530 670 0.8+ 1.4- 980602 046 0.7- 0.8+
980527 704 0.4+ 0.9- 980530 670 0.5+ 1.6+ 980602 046 0.4- 1.3+
980527 704 0.2+ 0.3+ 980530 670 0.5- 0.0 980602 046 0.4- 1.0+
980527 704 0.6+ 1.3- 980530 670 0.5- 0.9+ 980603 046 0.4- 0.5+
980527 704 0.0 0.6- 980530 670 0.4+ 0.5+ 980603 046 0.5- 0.7+
980528 046 0.1- 0.1- 980530 670 0.2- 1.3+ 980603 046 0.3- 0.6+
980528 046 0.1- 0.0 980530 422 0.2+ 0.4+ 980603 046 0.3- 0.8+
980528 046 0.0 0.2- 980530 422 0.1+ 0.0 980603 046 0.3- 0.7+
980528 046 0.2- 0.3+ 980530 422 0.3+ 0.0 980604 046 0.2+ 0.0
980528 046 0.2- 0.3+ 980530 402 0.1- 0.1- 980604 046 0.2+ 0.1-
980528 046 0.2- 0.2+ 980530 402 0.2- 0.3+ 980604 046 0.1+ 0.4-
980528 046 0.1+ 0.5+ 980530 402 0.1+ 0.2- 980604 046 0.3- 0.2-
980528 046 1.0- 0.9+ 980530 609 0.3+ 0.2+ 980604 118 0.4+ 0.4-
980528 704 1.0+ 1.2- 980531 609 0.1- 0.3+ 980604 118 0.3+ 0.2+
980528 704 0.1- 0.7- 980531 609 0.1+ 0.0 980604 118 0.4+ 0.1-
980528 704 0.4- 0.9- 980531 557 0.3- 0.5+ 980605 557 0.5- 0.7+
980528 704 0.7+ 1.7- 980531 557 0.4- 0.3+ 980605 557 0.3- 0.6+
980528 704 0.9- 0.9+ 980531 557 0.3- 0.2+ 980605 557 0.2- 0.7+
980528 422 0.2+ 0.1+ 980531 557 0.1+ 0.7- 980605 557 0.0 0.7-
980528 422 0.1- 0.3- 980531 670 0.3+ 1.2+ 980605 557 0.0 1.0-
980528 422 0.1+ 0.1+ 980531 670 0.3+ 0.3+ 980605 557 0.2- 0.3-
980528 422 0.5+ 0.3+ 980531 670 1.0+ 0.5- 980605 557 0.5- 0.4-
980528 422 0.5- 0.2- 980531 540 (2.2- 1.0+) 980606 118 0.9+ 0.7-
980528 557 0.1+ 0.6- 980531 540 0.0 0.7- 980606 118 0.2- 0.3+
980528 557 0.1+ 0.5- 980531 046 0.0 0.4- 980606 118 0.2- 0.4-
980528 557 0.4+ 0.8- 980531 046 0.2+ 0.4- 980606 557 0.8- 0.1+
980528 620 0.5+ 1.0+ 980531 046 0.1+ 0.3- 980606 557 0.4- 0.3-
980528 620 0.0 0.6+ 980531 046 0.0 0.1+ 980606 557 0.5- 0.7-
980528 620 0.3- 0.4+ 980531 118 0.4- 0.3- 980607 557 0.6- 0.2-
980528 620 0.6- 0.1- 980531 118 0.4- 0.4- 980607 557 0.6- 0.6-
980528 620 1.0- 0.5- 980531 118 0.5- 0.5- 980607 557 0.4- 0.0
980528 046 0.1+ 0.7- 980601 557 0.4- 0.1- 980607 557 0.2- 0.4-
980528 046 0.0 0.5- 980601 557 0.3- 0.1- 980607 658 0.8- 0.7-
980528 046 0.2- 0.4- 980601 557 0.4- 0.0 980607 658 0.4- 0.8-
980528 046 0.7+ 0.6- 980601 540 0.7+ 1.4- 980607 658 0.2- 1.1-
980529 734 0.5+ 0.3- 980601 540 0.7+ 0.3+ 980607 118 1.4+ 0.1+
980529 734 1.1+ 0.1+ 980601 540 1.6- 0.9+ 980607 118 0.7+ 0.4+
980529 734 0.1+ 0.2+ 980601 046 0.1+ 0.0 980607 118 0.4+ 0.7+
980529 704 0.8+ 0.4- 980601 046 0.0 0.0 980608 557 1.0+ 1.0+
980529 734 0.8+ 0.3+ 980601 046 0.2+ 0.2+ 980608 557 0.7+ 0.5-
980529 704 0.6+ 0.1- 980601 046 0.1+ 0.1- 980608 557 0.5+ 0.6+
980529 704 0.1- 0.5- 980601 046 0.0 0.1+ 980609 046 0.2+ 0.5+
980529 711 0.1+ 0.1- 980601 118 0.7+ 0.1+ 980609 046 0.2- 0.1-
980529 711 (1.0- 2.5+) 980601 118 1.5+ 0.1- 980609 046 0.5- 0.2-
980529 711 0.1+ 0.0 980601 118 1.2+ 0.1+ 980609 046 0.9+ 0.2+
980529 704 0.2+ 0.4- 980602 557 0.1+ 0.3- 980609 046 1.2- 0.5-
980529 704 0.0 0.7+ 980602 557 0.1+ 0.1- 031228 704 0.3- 0.7-
980529 422 0.5+ 0.2- 980602 557 0.1+ 0.5- 031228 704 0.3- 0.1-
980529 422 0.3- 0.1+ 980602 557 0.4+ 0.5- 031228 704 0.3+ 0.0
980529 422 0.6+ 0.0 980602 540 0.9- 0.7+ 031228 704 0.3- 0.2+
980529 422 0.3+ 0.1+ 980602 540 0.2- 1.1+ 031229 854 1.3+ 1.4+
980529 046 0.1+ 0.4- 980602 540 1.1- 1.1+ 031229 854 1.0- 0.2+
980529 046 0.4+ 0.2- 980602 540 0.3- 0.3+ 031229 854 0.1- 0.4-
980529 046 0.5+ 0.6- 980602 046 0.7- 1.7+
980529 046 0.7+ 0.4- 980602 046 0.3- 0.8+
Ephemeris:
1998 KJ9 a,e,i = 1.45, 0.64, 11 q = 0.5215
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2003 12 27 11 21.70 +12 58.5 0.390 1.167 108.5 53.0 19.6
2004 01 06 10 51.16 +20 21.7 0.406 1.273 127.6 37.7 19.5
2004 01 16 10 14.21 +26 54.4 0.440 1.372 146.3 23.4 19.4
2004 01 26 09 35.32 +31 36.9 0.499 1.465 160.7 12.8 19.5
2004 02 05 09 01.20 +34 10.3 0.585 1.553 161.9 11.4 19.9
2004 02 15 08 36.17 +35 03.7 0.695 1.635 152.1 16.4 20.6
2004 02 25 08 20.74 +34 57.1 0.825 1.711 141.0 21.3 21.2
2004 03 06 08 13.49 +34 19.2 0.970 1.783 130.7 25.0 21.7
Kyle E. Smalley (C) Copyright 2003 MPC M.P.E.C. 2003-Y87
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