MPEC 2001-O06 : 1998 WZ6
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M.P.E.C. 2001-O06 Issued 2001 July 18, 22:32 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
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
1998 WZ6
Revision to MPEC 1998-W36
Observations:
J98W06Z 1C1999 09 18.61146 19 45 05.72 -58 09 40.2 20.0 R 413
J98W06Z 1C1999 09 18.61356 19 45 05.81 -58 09 38.8 20.1 R 413
J98W06Z 1C2001 07 04.80181 01 08 15.30 -28 21 47.3 413
J98W06Z 1C2001 07 04.80409 01 08 15.45 -28 21 49.2 20.1 R 413
J98W06Z 1C2001 07 04.80640 01 08 15.58 -28 21 50.4 413
J98W06Z FC2001 07 13.64322 01 17 19.48 -29 57 55.0 474
J98W06Z FC2001 07 13.64574 01 17 19.65 -29 57 56.8 474
J98W06Z FC2001 07 13.64831 01 17 19.78 -29 57 58.7 474
J98W06Z C2001 07 13.66081 01 17 20.40 -29 58 07.7 19 R 474
J98W06Z FC2001 07 13.69241 01 17 22.00 -29 58 30.8 474
J98W06Z C2001 07 14.65699 01 18 12.67 -30 10 14.0 19 R 474
J98W06Z C2001 07 14.66032 01 18 12.86 -30 10 16.7 474
J98W06Z C2001 07 14.66527 01 18 13.09 -30 10 20.6 474
J98W06Z C2001 07 14.66932 01 18 13.32 -30 10 23.3 474
J98W06Z FC2001 07 15.62108 01 19 01.50 -30 22 12.8 474
J98W06Z C2001 07 15.63257 01 19 02.08 -30 22 21.0 19.5 R 474
J98W06Z C2001 07 15.64831 01 19 02.82 -30 22 33.3 19.3 R 474
Observer details:
413 Siding Spring. Observer R. H. McNaught. 1.0-m f/8 reflector + CCD.
474 Mount John Observatory, Lake Tekapo. Observer A. C. Gilmore.
f/7.7 reflector + CCD.
First and last 2001 observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
010704 413 2.4- 2.7- 010715 474 3.2- 3.3- MPC 36541 +0.0026 day
Orbital elements:
1998 WZ6
Epoch 2001 Apr. 1.0 TT = JDT 2452000.5 Williams
M 62.64826 (2000.0) P Q
n 0.56312226 Peri. 110.59187 -0.91975102 -0.03989590
a 1.4523376 Node 68.84873 -0.17541064 -0.84816875
e 0.4079411 Incl. 24.75097 +0.35112556 -0.52822163
P 1.75 H 17.3 G 0.15 U 2
Residuals in seconds of arc
981123 411 0.3- 0.7- 981209 688 0.3- 0.2+ 981231 046 0.3- 0.2+
981123 411 0.4- 0.6+ 981209 411 0.3- 0.7+ 990101 658 0.3- 0.2-
981124 888 0.0 0.2- 981209 411 0.3- 0.6+ 990101 658 0.3- 0.2-
981124 888 0.6+ 0.2- 981209 355 0.3- 0.2+ 990101 658 0.1- 0.4-
981124 888 0.9+ 0.8- 981209 355 0.2- 0.5+ 990101 151 1.9+ 3.0+
981124 888 0.9+ 0.5- 981209 355 0.1- 0.5+ 990101 151 0.0 0.5-
981124 897 0.3+ 0.5- 981209 540 0.0 0.4+ 990101 151 1.2+ 1.8+
981124 897 1.4+ 0.7- 981209 540 0.5- 0.5+ 990103 411 0.2- 0.0
981124 897 0.3+ 0.6- 981209 540 0.0 0.6+ 990103 411 0.3- 0.2-
981124 897 0.7+ 0.4- 981209 540 0.3- 0.5+ 990103 411 0.1+ 0.4-
981124 411 0.1- 0.2+ 981210 046 0.1+ 0.1+ 990103 540 0.0 0.5+
981124 411 0.8+ 0.1- 981210 046 0.1- 0.4+ 990103 540 0.4+ 0.2+
981124 355 0.9+ 1.1- 981211 118 0.2+ 0.0 990103 540 0.3- 0.3+
981124 355 1.2+ 0.8- 981211 118 0.7+ 0.3+ 990104 118 0.4- 0.8-
981124 900 0.8+ 0.5- 981211 670 0.2- 0.6+ 990104 118 0.3- 0.8-
981124 355 1.0+ 1.0- 981211 670 0.0 0.1- 990104 118 0.1- 0.8-
981124 411 0.5+ 0.3- 981211 670 0.4- 0.4+ 990105 402 0.7+ 0.3-
981124 900 0.7+ 0.6- 981211 411 0.1- 0.4+ 990105 402 0.2+ 0.3-
981124 411 0.8+ 0.4- 981211 411 0.2+ 0.1- 990105 402 0.3+ 0.1+
981124 557 0.8+ 0.8- 981212 704 2.3+ 1.4- 990105 151 0.4+ 0.9+
981124 557 0.6+ 0.5- 981212 704 1.2+ 1.6- 990105 151 0.5- 0.5+
981124 557 0.7+ 0.5- 981212 704 0.1- 1.2- 990106 046 0.2- 0.3-
981124 046 0.3+ 0.0 981212 704 0.6- 0.5- 990106 046 0.1- 0.0
981124 046 0.2+ 0.1- 981212 704 0.9- 0.3+ 990106 046 0.0 0.2-
981124 046 0.1+ 0.1- 981213 355 0.6- 0.8+ 990106 046 0.2- 0.1-
981124 046 0.3+ 0.1- 981213 355 0.3- 0.3+ 990106 151 0.3+ 0.6-
981124 118 0.2+ 0.4- 981213 355 0.2- 0.1- 990106 151 0.6+ 0.0
981124 118 0.3+ 0.5- 981213 046 0.3- 0.4+ 990106 118 0.5- 0.5+
981124 118 0.1+ 0.4- 981213 046 0.1- 0.3+ 990106 118 0.7- 0.0
981125 713 (1.4- 3.1+) 981213 046 0.3- 0.2+ 990106 151 0.1- 0.0
981125 713 0.7- 1.2+ 981213 046 0.3- 0.0 990106 151 0.4+ 0.6-
981125 713 1.1+ 1.2- 981215 540 0.2+ 0.3+ 990106 540 0.1- 0.2+
981125 684 0.9- 0.2- 981215 540 0.3- 0.3+ 990106 540 0.2- 0.0
981125 684 0.7- 0.3- 981215 540 0.8- 0.5+ 990106 540 0.1- 0.1+
981125 684 0.7- 0.4- 981215 540 0.8- 0.2- 990106 540 0.3- 0.2-
981125 411 0.7- 0.2- 981215 151 0.6- 0.5+ 990116 385 0.3- 0.1-
981125 411 0.8- 0.4+ 981215 151 0.9- 0.1+ 990116 385 0.6+ 0.1+
981125 411 0.2- 0.3- 981215 151 0.5- 0.2- 990116 385 0.3+ 0.2-
981125 360 0.5- 0.6- 981216 670 0.2- 0.1- 990116 385 1.0+ 0.2-
981125 360 0.5- 0.6- 981216 670 0.4- 0.2+ 990116 385 0.1- 0.0
981125 360 0.6- 0.5- 981216 670 0.4- 0.0 990120 587 0.7+ 0.2-
981125 426 0.1- 0.2- 981216 402 0.7- 0.5+ 990120 587 0.8+ 0.0
981125 426 0.5- 0.1+ 981216 402 0.2- 0.0 990122 402 0.5+ 0.4+
981125 426 0.6- 0.2- 981216 402 0.7- 0.6+ 990122 402 0.4+ 0.5+
981125 426 0.4- 0.0 981217 355 0.6- 0.6+ 990122 402 0.7+ 0.3+
981125 888 0.4- 0.3+ 981217 355 0.8- 0.8+ 990127 587 0.5- 0.2+
981125 888 0.5- 0.1- 981217 355 0.8- 0.9+ 990127 587 0.1+ 0.0
981125 888 0.3- 0.1- 981217 628 1.1- 2.3+ 990130 385 0.6+ 1.3+
981125 888 0.1- 0.0 981217 628 0.2- 0.1+ 990130 385 0.6+ 0.2+
981126 411 0.2- 0.3- 981217 628 1.1- 0.9+ 990207 587 0.1+ 0.1+
981126 411 0.1- 0.4+ 981217 628 0.1+ 1.0+ 990207 587 0.1+ 0.3+
981126 411 0.1- 0.1+ 981218 118 0.7- 0.5+ 990408 411 1.3+ 0.3+
981126 367 1.4+ 1.3- 981218 118 0.6- 0.5+ 990408 411 0.5+ 0.1+
981126 367 0.8+ 1.4- 981218 587 0.3- 0.5+ 990408 411 0.4+ 0.3+
981126 367 0.9+ 1.8- 981218 587 0.2- 0.8+ 990429 888 0.2+ 0.2-
981126 402 0.0 0.1- 981219 411 0.7- 0.6+ 990515 428 1.0+ 0.4-
981126 402 0.0 0.1- 981219 411 0.5- 0.4+ 990515 428 0.8+ 1.0+
981126 402 0.1- 0.1- 981219 411 0.1- 0.2+ 990629 413 0.1- 0.4+
981126 400 0.1+ 0.8- 981220 636 1.6+ 1.2- 990629 413 0.1- 0.4+
981126 400 0.3+ 0.2- 981220 636 (3.8+ 4.5-) 990702 413 0.2- 0.5+
981126 400 0.3+ 0.3+ 981221 151 0.4+ 0.2+ 990702 413 0.1- 0.4+
981126 400 0.2+ 0.1- 981221 151 0.3+ 0.0 990705 428 0.1- 0.3+
981126 355 0.2- 0.0 981221 151 0.0 0.3+ 990705 428 0.5- 0.0
981126 355 0.4- 0.1+ 981221 151 0.6+ 0.1+ 990705 428 0.2+ 0.5+
981126 355 0.0 0.6- 981223 670 0.3- 0.8+ 990804 413 0.1+ 0.0
981126 587 1.4- 0.5+ 981223 670 0.1- 0.2+ 990804 413 0.1+ 0.2+
981126 587 0.3- 0.5+ 981223 670 0.4- 0.5+ 990918 413 0.1- 0.9+
981128 411 0.0 0.3+ 981223 402 0.2- 0.2- 990918 413 0.5- 0.1+
981128 411 0.1- 0.3+ 981223 402 0.1- 0.3- 991005 413 0.2+ 0.1+
981128 402 0.5+ 0.2- 981223 402 0.0 0.3- 991005 413 0.1- 0.2+
981128 402 0.3+ 0.1+ 981223 151 0.5+ 0.3+ 010704 413 0.2+ 0.1+
981128 402 0.2+ 0.4+ 981223 151 0.2+ 1.0- 010704 413 0.1+ 0.4-
981128 104 0.6+ 0.5- 981223 540 0.4- 0.2+ 010704 413 0.2- 0.3-
981129 888 0.3+ 0.1- 981223 540 0.6+ 0.2- 010713 474 0.3- 0.1+
981129 402 0.3+ 0.0 981223 540 0.1- 0.8+ 010713 474 0.2+ 0.1+
981129 402 0.3+ 0.0 981226 360 0.1- 0.4+ 010713 474 0.2+ 0.1+
981129 402 0.3+ 0.1- 981226 360 0.1- 0.2+ 010713 474 0.2- 0.2+
981129 888 0.5+ 0.3+ 981226 360 0.2- 0.2+ 010713 474 0.6- 0.2+
981129 888 0.1+ 0.6+ 981228 151 0.4+ 0.2+ 010714 474 0.8- 0.7+
981129 888 0.1+ 0.2+ 981228 151 0.0 0.1+ 010714 474 0.4- 0.5+
981207 587 1.2+ 0.6- 981228 151 0.4- 1.2+ 010714 474 0.7- 0.3+
981207 587 0.1- 0.1+ 981228 151 0.6- 0.0 010714 474 0.3- 0.6+
981209 688 0.3- 0.1+ 981228 151 0.4+ 0.5- 010715 474 0.6- 0.4-
981209 688 0.2- 0.1- 981231 046 0.4- 0.5+ 010715 474 0.3- 0.2+
981209 688 0.3- 0.4+ 981231 046 0.1- 0.1- 010715 474 0.5- 0.1-
981209 688 0.4- 0.4+ 981231 046 0.3- 0.3+
Ephemeris:
1998 WZ6 a,e,i = 1.45, 0.41, 25 q = 0.8599
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2001 07 10 01 13.86 -29 15.9 1.387 1.874 101.3 32.1 20.7
2001 07 20 01 22.31 -31 19.6 1.329 1.904 107.8 30.5 20.6
2001 07 30 01 27.08 -33 47.6 1.276 1.931 114.5 28.6 20.5
2001 08 09 01 27.45 -36 34.1 1.230 1.956 121.0 26.4 20.4
2001 08 19 01 22.62 -39 28.6 1.196 1.977 126.9 24.2 20.3
2001 08 29 01 12.04 -42 14.0 1.176 1.995 131.7 22.2 20.2
2001 09 08 00 55.97 -44 28.2 1.172 2.011 134.5 21.0 20.2
2001 09 18 00 35.81 -45 50.1 1.188 2.023 134.5 20.7 20.2
2001 09 28 00 14.29 -46 05.9 1.222 2.033 131.9 21.5 20.3
2001 10 08 23 54.57 -45 15.1 1.274 2.040 127.2 23.0 20.5
2001 10 18 23 38.98 -43 28.8 1.342 2.044 121.1 24.7 20.6
2001 10 28 23 28.58 -41 02.6 1.423 2.045 114.4 26.3 20.8
2001 11 07 23 23.28 -38 11.6 1.515 2.043 107.4 27.6 21.0
2001 11 17 23 22.42 -35 06.7 1.613 2.038 100.4 28.5 21.1
2001 11 27 23 25.23 -31 55.3 1.715 2.030 93.5 29.0 21.3
2001 12 07 23 30.96 -28 41.6 1.819 2.020 86.8 29.1 21.4
2001 12 17 23 39.00 -25 27.9 1.922 2.006 80.3 28.9 21.5
2001 12 27 23 48.89 -22 15.1 2.022 1.990 74.0 28.4 21.6
2002 01 06 00 00.25 -19 04.0 2.117 1.970 67.9 27.5 21.6
2002 01 16 00 12.83 -15 54.4 2.206 1.948 62.0 26.5 21.7
Gareth V. Williams (C) Copyright 2001 MPC M.P.E.C. 2001-O06
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