MPEC 1998-U30 : 1998 US18
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Read MPEC 1998-U29
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M.P.E.C. 1998-U30 Issued 1998 Oct. 30, 16:16 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.
BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html
1998 US18
Observations:
J98U18S* C1998 10 25.13526 22 23 44.05 -07 05 29.6 18.3 V 691
J98U18S C1998 10 25.14398 22 23 52.84 -07 05 26.7 18.2 V 691
J98U18S C1998 10 25.15245 22 24 01.49 -07 05 23.7 18.2 V 691
J98U18S C1998 10 25.15819 22 24 07.31 -07 05 21.8 18.2 V 691
J98U18S C1998 10 25.17983 22 24 29.26 -07 05 13.5 18.2 V 691
J98U18S C1998 10 25.20115 22 24 50.74 -07 05 05.6 18.2 V 691
J98U18S C1998 10 25.24484 22 25 34.73 -07 04 47.9 18.2 V 691
J98U18S C1998 10 25.25796 22 25 48.11 -07 04 42.3 18.2 V 691
J98U18S C1998 10 27.09377 22 55 01.67 -06 49 54.4 19.0 V 691
J98U18S C1998 10 28.27575 23 11 24.03 -06 37 50.2 18.6 V 691
J98U18S C1998 10 29.46944 23 26 19.37 -06 24 33.1 18.6 V 360
J98U18S C1998 10 29.47188 23 26 21.07 -06 24 31.8 360
J98U18S C1998 10 29.47448 23 26 22.84 -06 24 30.4 360
J98U18S C1998 10 29.47708 23 26 24.60 -06 24 28.4 360
J98U18S C1998 10 30.20772 23 34 43.37 -06 16 07.6 658
J98U18S C1998 10 30.20927 23 34 44.33 -06 16 06.2 658
J98U18S C1998 10 30.21565 23 34 48.45 -06 16 01.6 658
J98U18S C1998 10 30.45781 23 37 27.10 -06 12 05.9 18.0 R 426
J98U18S C1998 10 30.46170 23 37 29.55 -06 12 04.7 18.4 R 426
J98U18S C1998 10 30.46560 23 37 32.06 -06 12 02.3 18.2 R 426
Observer details:
360 Kuma Kogen. Observer A. Nakamura. 0.60-m f/6.0 Ritchey-Chretien + CCD.
426 Woomera. Observer F. B. Zoltowski. 0.30-m f/3.3 Schmidt-Cassegrain + CCD.
658 Dominion Astrophysical Observatory. Observer D. D. Balam. 1.82-m
reflector + CCD.
691 Steward Observatory, Kitt Peak. Observers J. Montani, J. Larsen. 0.9-m
Spacewatch telescope.
Orbital elements:
1998 US18 PHA 0.034
Epoch 1998 Oct. 14.0 TT = JDT 2451100.5 Williams
M 8.01880 (2000.0) P Q
n 0.23700617 Peri. 115.20846 +0.79114571 +0.60669840
a 2.5860065 Node 207.64022 -0.60387384 +0.75470951
e 0.6757511 Incl. 9.61607 -0.09708168 +0.24966099
P 4.16 H 20.5 G 0.15
From 20 observations 1998 Oct. 25-30.
Ephemeris:
1998 US18 a,e,i = 2.59, 0.68, 10 q = 0.8385
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 10 24 22 03.21 -07 09.9 0.127 1.063 119.8 54.3 18.1
1998 10 25 22 21.36 -07 05.6 0.132 1.072 123.1 51.0 18.1
1998 10 26 22 38.16 -06 58.8 0.137 1.081 126.1 48.0 18.2
1998 10 27 22 53.61 -06 50.2 0.144 1.090 128.7 45.4 18.2
1998 10 28 23 07.75 -06 40.2 0.151 1.099 131.0 43.1 18.3
1998 10 29 23 20.65 -06 29.3 0.158 1.107 133.0 41.0 18.3
1998 10 30 23 32.40 -06 17.9 0.166 1.117 134.7 39.2 18.4
1998 10 31 23 43.12 -06 06.1 0.175 1.126 136.2 37.6 18.5
1998 11 01 23 52.88 -05 54.1 0.184 1.135 137.4 36.3 18.6
1998 11 02 00 01.80 -05 42.2 0.193 1.144 138.5 35.1 18.7
1998 11 03 00 09.96 -05 30.3 0.202 1.153 139.3 34.1 18.8
1998 11 04 00 17.44 -05 18.6 0.212 1.163 140.0 33.2 18.9
1998 11 05 00 24.31 -05 07.0 0.222 1.172 140.6 32.5 18.9
1998 11 06 00 30.63 -04 55.6 0.233 1.181 141.1 31.8 19.0
1998 11 07 00 36.48 -04 44.4 0.243 1.191 141.4 31.3 19.1
1998 11 08 00 41.89 -04 33.4 0.254 1.200 141.6 30.8 19.2
1998 11 09 00 46.92 -04 22.6 0.265 1.210 141.8 30.4 19.3
1998 11 10 00 51.60 -04 11.9 0.276 1.219 141.9 30.1 19.4
1998 11 11 00 55.97 -04 01.4 0.287 1.229 141.9 29.8 19.5
1998 11 12 01 00.06 -03 51.0 0.298 1.238 141.9 29.6 19.6
1998 11 13 01 03.90 -03 40.7 0.310 1.248 141.8 29.4 19.7
1998 11 14 01 07.52 -03 30.6 0.322 1.258 141.7 29.2 19.8
1998 11 15 01 10.93 -03 20.5 0.333 1.267 141.5 29.1 19.9
1998 11 16 01 14.16 -03 10.5 0.345 1.277 141.3 29.0 20.0
1998 11 17 01 17.22 -03 00.6 0.358 1.287 141.0 28.9 20.1
1998 11 18 01 20.13 -02 50.8 0.370 1.296 140.7 28.9 20.2
1998 11 19 01 22.90 -02 41.0 0.382 1.306 140.4 28.8 20.3
1998 11 20 01 25.55 -02 31.3 0.395 1.316 140.1 28.8 20.3
1998 11 21 01 28.09 -02 21.6 0.408 1.326 139.8 28.8 20.4
1998 11 22 01 30.52 -02 11.9 0.421 1.335 139.4 28.8 20.5
1998 11 23 01 32.86 -02 02.3 0.434 1.345 139.0 28.8 20.6
1998 11 24 01 35.12 -01 52.7 0.447 1.355 138.6 28.8 20.7
1998 11 25 01 37.29 -01 43.1 0.460 1.365 138.1 28.9 20.8
1998 11 26 01 39.40 -01 33.5 0.473 1.375 137.7 28.9 20.8
1998 11 27 01 41.43 -01 23.9 0.487 1.384 137.2 28.9 20.9
1998 11 28 01 43.41 -01 14.3 0.501 1.394 136.8 29.0 21.0
1998 11 29 01 45.33 -01 04.8 0.514 1.404 136.3 29.1 21.1
1998 11 30 01 47.20 -00 55.2 0.528 1.414 135.8 29.1 21.1
1998 12 01 01 49.03 -00 45.7 0.542 1.424 135.3 29.2 21.2
1998 12 02 01 50.81 -00 36.1 0.557 1.433 134.8 29.2 21.3
1998 12 03 01 52.55 -00 26.6 0.571 1.443 134.2 29.3 21.4
1998 12 04 01 54.26 -00 17.1 0.585 1.453 133.7 29.4 21.4
1998 12 05 01 55.93 -00 07.6 0.600 1.463 133.2 29.4 21.5
1998 12 06 01 57.57 +00 02.0 0.614 1.473 132.6 29.5 21.6
1998 12 07 01 59.18 +00 11.5 0.629 1.482 132.1 29.6 21.6
1998 12 08 02 00.77 +00 21.0 0.644 1.492 131.5 29.6 21.7
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-U30
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- B01 (the abbreviated form)
