MPEC 2000-R57 : 1998 NU
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M.P.E.C. 2000-R57 Issued 2000 Sept. 14, 23:12 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 NU
Revision to MPEC 1998-O07
Observations:
J98N00U 2 1989 12 17.17569 03 47 56.83 +24 35 03.0 17.5 V 261
J98N00U 2 1989 12 17.22431 03 47 52.85 +24 34 43.7 261
J99TW3B* C1999 10 11.18225 23 22 12.22 -00 20 56.8 J99T52S 20.3 V 691
J99TW3B C1999 10 11.20380 23 22 11.21 -00 21 03.1 J99T52S 20.7 V 691
J99TW3B C1999 10 11.22526 23 22 10.18 -00 21 09.6 J99T52S 20.9 V 691
J99U60S* C1999 10 16.17748 23 18 36.61 -00 45 52.4 J99TV2L 21.7 V 691
J99U60S C1999 10 16.19080 23 18 36.04 -00 45 56.4 J99TV2L 21.9 V 691
J99U60S C1999 10 16.20200 23 18 35.60 -00 45 59.1 J99TV2L 21.3 V 691
Observer details:
261 Palomar Mountain-DSS. Observers C. Brewer, J. D. Mendenhall. Trail
located and measured by ANEOPP (A. Boattini, M. Tombelli, G. D'Abramo).
1.2-m Schmidt.
691 Steward Observatory, Kitt Peak. Observers J. A. Larsen, J. L. Montani,
A. E. Gleason. 0.9-m Spacewatch telescope.
Orbital elements:
1998 NU = 1999 TT52 = 1999 TB323 = 1999 US60
Id. ANEOPP (1989 observations), G. V. Williams
Epoch 2000 Sept. 13.0 TT = JDT 2451800.5 Williams
M 319.18326 (2000.0) P Q
n 0.27266347 Peri. 220.77518 -0.93654304 -0.34781811
a 2.3553281 Node 298.82043 +0.33319171 -0.84447329
e 0.4876008 Incl. 2.85900 +0.10895143 -0.40729279
P 3.61 H 16.1 G 0.15 U 3
Residuals in seconds of arc
891217 261 1.0- 0.8+ 980718 691 0.5+ 0.1+ 980727 691 0.9- 0.0
891217 261 0.7+ 0.3+ 980718 104 1.2+ 0.9+ 980727 691 0.9- 0.2+
980702 691 0.0 0.7+ 980718 104 0.8+ 1.0+ 980727 691 0.4- 0.2+
980702 691 0.0 0.3+ 980718 104 1.0+ 0.6+ 991005 691 0.2+ 0.1-
980702 691 0.1+ 0.0 980718 104 1.3+ 0.2+ 991005 691 0.4+ 0.1-
980703 691 0.1- 0.3+ 980724 598 0.2- 0.1+ 991005 691 0.2+ 0.2+
980703 691 0.5- 0.1+ 980725 598 0.4- 0.4- 991011 691 0.0 0.8-
980703 691 0.1- 0.2+ 980725 598 0.1+ 0.2- 991011 691 0.0 0.4-
980715 691 0.5- 0.1+ 980726 598 1.1+ 0.3- 991011 691 0.4- 0.2-
980715 691 0.3- 0.0 980726 598 0.2- 0.1- 991016 691 0.2+ 0.2-
980715 691 0.5- 0.3+ 980726 598 0.5- 0.4- 991016 691 0.0 0.3-
980718 691 0.3- 0.4- 980726 598 0.3- 0.8- 991016 691 0.4+ 0.2+
980718 691 0.2+ 0.3- 980726 598 1.1- 0.3-
Ephemeris:
1998 NU a,e,i = 2.36, 0.49, 3 q = 1.2069
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2000 09 13 06 19.58 +25 45.4 1.867 1.896 76.1 31.0 20.2
2000 09 23 06 43.70 +25 28.2 1.711 1.834 80.4 32.7 20.0
2000 10 03 07 08.48 +24 55.3 1.559 1.771 84.6 34.2 19.7
2000 10 13 07 33.92 +24 05.2 1.411 1.709 88.6 35.7 19.5
2000 10 23 08 00.07 +22 55.9 1.271 1.647 92.4 37.1 19.2
2000 11 02 08 26.94 +21 25.4 1.137 1.586 96.0 38.5 18.9
2000 11 12 08 54.60 +19 31.3 1.013 1.526 99.3 39.8 18.6
2000 11 22 09 23.17 +17 10.6 0.899 1.469 102.2 41.1 18.3
2000 12 02 09 52.69 +14 20.9 0.796 1.415 104.7 42.4 18.0
2000 12 12 10 23.26 +10 59.8 0.704 1.365 106.7 43.7 17.7
2000 12 22 10 54.96 +07 06.3 0.626 1.320 108.1 45.1 17.4
2001 01 01 11 27.66 +02 43.2 0.560 1.281 109.1 46.5 17.1
2001 01 11 12 01.16 -02 02.6 0.507 1.249 109.7 47.8 16.9
2001 01 21 12 34.99 -06 58.8 0.466 1.226 110.2 48.9 16.7
2001 01 31 13 08.27 -11 48.1 0.437 1.212 110.9 49.5 16.6
2001 02 10 13 39.91 -16 13.3 0.416 1.207 112.2 49.2 16.4
2001 02 20 14 08.59 -20 01.2 0.403 1.212 114.4 48.0 16.3
2001 03 02 14 32.75 -23 03.3 0.394 1.227 118.1 45.5 16.3
2001 03 12 14 51.10 -25 17.5 0.391 1.251 123.2 41.7 16.2
2001 03 22 15 02.66 -26 44.7 0.391 1.283 130.0 36.5 16.1
2001 04 01 15 07.01 -27 25.5 0.396 1.322 138.5 30.1 16.0
2001 04 11 15 05.00 -27 21.9 0.410 1.368 148.3 22.6 15.9
2001 04 21 14 58.49 -26 38.8 0.433 1.418 159.0 14.7 15.9
2001 05 01 14 50.19 -25 26.7 0.471 1.472 168.8 7.6 15.9
2001 05 11 14 42.85 -24 02.7 0.524 1.530 170.8 6.0 16.1
2001 05 21 14 38.15 -22 42.7 0.594 1.589 162.8 10.9 16.7
2001 05 31 14 36.89 -21 37.9 0.680 1.650 153.4 16.0 17.2
2001 06 10 14 39.05 -20 53.3 0.782 1.712 144.4 20.2 17.7
2001 06 20 14 44.19 -20 28.5 0.897 1.774 136.0 23.5 18.2
2001 06 30 14 51.85 -20 20.9 1.026 1.837 128.2 25.8 18.7
2001 07 10 15 01.56 -20 26.9 1.165 1.899 120.9 27.3 19.0
2001 07 20 15 12.89 -20 42.8 1.314 1.961 114.0 28.2 19.4
2001 07 30 15 25.56 -21 05.5 1.471 2.023 107.4 28.6 19.7
2001 08 09 15 39.29 -21 32.2 1.635 2.083 101.1 28.5 20.0
2001 08 19 15 53.88 -22 00.3 1.804 2.143 94.9 28.1 20.3
2001 08 29 16 09.21 -22 28.2 1.976 2.201 88.8 27.3 20.5
2001 09 08 16 25.12 -22 54.1 2.151 2.258 82.8 26.3 20.7
2001 09 18 16 41.50 -23 16.7 2.325 2.315 76.9 25.0 20.9
2001 09 28 16 58.27 -23 35.1 2.499 2.369 71.0 23.6 21.1
2001 10 08 17 15.34 -23 48.4 2.669 2.423 65.0 22.0 21.2
Gareth V. Williams (C) Copyright 2000 MPC M.P.E.C. 2000-R57
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