MPEC 1998-U31 : 1998 UT18
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Read MPEC 1998-U30
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M.P.E.C. 1998-U31 Issued 1998 Oct. 30, 16:27 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 UT18
Observations:
J98U18T* C1998 10 27.40284 04 51 09.17 -09 53 14.1 17.3 R 703
J98U18T C1998 10 27.41090 04 51 10.19 -09 53 09.2 703
J98U18T C1998 10 27.41895 04 51 11.02 -09 53 04.1 703
J98U18T C1998 10 28.29859 04 53 06.06 -09 43 10.2 703
J98U18T C1998 10 28.30296 04 53 06.51 -09 43 06.7 703
J98U18T C1998 10 28.36913 04 53 14.38 -09 42 20.9 17.8 R 703
J98U18T C1998 10 28.37455 04 53 15.04 -09 42 16.9 703
J98U18T C1998 10 28.93275 04 54 29.89 -09 35 25.2 17.8 V 620
J98U18T C1998 10 28.93958 04 54 30.77 -09 35 20.8 17.4 V 620
J98U18T C1998 10 28.95046 04 54 32.12 -09 35 12.6 17.4 V 620
J98U18T C1998 10 28.95497 04 54 32.76 -09 35 09.1 620
J98U18T C1998 10 29.28846 04 55 17.31 -09 30 45.1 703
J98U18T C1998 10 29.29120 04 55 17.66 -09 30 43.0 703
J98U18T C1998 10 29.36933 04 55 27.14 -09 29 42.0 17.2 R 703
J98U18T C1998 10 29.46532 04 55 38.73 -09 28 24.1 703
J98U18T C1998 10 30.04762 04 56 59.11 -09 20 24.2 557
J98U18T C1998 10 30.04941 04 56 59.34 -09 20 22.6 557
J98U18T C1998 10 30.05106 04 56 59.54 -09 20 21.2 557
J98U18T C1998 10 30.05269 04 56 59.73 -09 20 19.7 557
J98U18T C1998 10 30.31012 04 57 36.03 -09 16 27.8 734
J98U18T C1998 10 30.31851 04 57 37.14 -09 16 20.1 734
J98U18T C1998 10 30.32826 04 57 38.37 -09 16 11.4 734
J98U18T C1998 10 30.42841 04 57 51.88 -09 14 46.4 658
J98U18T C1998 10 30.43196 04 57 52.34 -09 14 43.1 658
J98U18T C1998 10 30.43647 04 57 52.91 -09 14 39.3 658
Observer details:
557 Ondrejov. Observer L. Sarounova. 0.65-m f/3.6 reflector + CCD.
620 Observatorio Astronomico de Mallorca. Observers A. Lopez, R. Pacheco.
0.30-m f/3.3 Schmidt-Cassegrain + CCD.
658 Dominion Astrophysical Observatory. Observer D. D. Balam. 1.82-m
reflector + CCD.
703 Catalina Sky Survey. Observer T. B. Spahr. 0.41-m f/3 Schmidt + CCD.
734 Farpoint Observatory. Observers G. Hug, G. Bell. 0.30-m
Schmidt-Cassegrain + CCD.
Orbital elements:
1998 UT18 PHA 0.034A
Epoch 1998 Oct. 14.0 TT = JDT 2451100.5 Williams
M 311.42945 (2000.0) P Q
n 0.57894425 Peri. 49.49183 -0.39245139 -0.89388651
a 1.4257549 Node 64.86740 +0.75481144 -0.44761668
e 0.3390362 Incl. 13.84731 +0.52558691 -0.02462164
P 1.70 H 19.0 G 0.15
From 25 observations 1998 Oct. 27-30.
Ephemeris:
1998 UT18 a,e,i = 1.43, 0.34, 14 q = 0.9424
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 10 24 04 44.21 -10 22.2 0.254 1.181 132.2 38.7 17.9
1998 10 29 04 54.62 -09 34.1 0.219 1.155 133.7 38.4 17.6
1998 11 03 05 06.73 -08 08.4 0.185 1.131 135.2 38.2 17.1
1998 11 08 05 21.81 -05 43.4 0.152 1.107 136.8 37.8 16.7
1998 11 13 05 42.11 -01 39.9 0.122 1.083 138.2 37.5 16.1
1998 11 18 06 12.25 +05 16.3 0.094 1.061 138.7 37.9 15.5
1998 11 23 07 02.33 +17 03.6 0.073 1.040 135.3 41.9 15.0
1998 11 28 08 32.25 +33 41.3 0.062 1.021 122.4 54.7 15.0
1998 12 03 10 48.47 +45 28.5 0.066 1.003 103.4 72.9 15.7
1998 12 08 12 47.20 +46 12.5 0.083 0.987 89.1 86.0 16.6
1998 12 13 13 56.13 +42 57.1 0.106 0.974 81.0 92.9 17.4
1998 12 18 14 35.29 +39 37.5 0.131 0.962 76.6 95.8 17.9
1998 12 23 14 59.90 +36 49.9 0.157 0.953 74.3 96.6 18.3
1998 12 28 15 17.02 +34 29.1 0.183 0.947 73.2 96.1 18.6
1999 01 02 15 30.01 +32 26.8 0.209 0.943 72.9 94.9 18.9
1999 01 07 15 40.61 +30 37.2 0.234 0.942 73.1 93.1 19.0
1999 01 12 15 49.72 +28 57.2 0.257 0.944 73.8 91.1 19.2
1999 01 17 15 57.81 +27 24.9 0.279 0.949 74.7 88.8 19.2
1999 01 22 16 05.14 +25 59.1 0.299 0.957 76.0 86.3 19.3
1999 01 27 16 11.85 +24 38.8 0.318 0.967 77.5 83.8 19.4
1999 02 01 16 18.01 +23 23.5 0.334 0.979 79.2 81.2 19.4
1999 02 06 16 23.65 +22 13.3 0.348 0.994 81.2 78.6 19.4
1999 02 11 16 28.71 +21 08.1 0.359 1.011 83.4 75.9 19.5
1999 02 16 16 33.08 +20 07.7 0.368 1.029 85.9 73.2 19.5
1999 02 21 16 36.64 +19 11.7 0.375 1.049 88.7 70.4 19.4
1999 02 26 16 39.27 +18 19.4 0.380 1.071 91.7 67.5 19.4
1999 03 03 16 40.86 +17 29.8 0.382 1.094 95.1 64.5 19.4
1999 03 08 16 41.26 +16 42.3 0.383 1.117 98.8 61.4 19.3
1999 03 13 16 40.27 +15 55.8 0.382 1.142 102.9 58.0 19.3
1999 03 18 16 37.72 +15 08.8 0.379 1.166 107.5 54.5 19.2
1999 03 23 16 33.44 +14 19.4 0.376 1.192 112.4 50.6 19.1
1999 03 28 16 27.32 +13 25.2 0.373 1.218 117.9 46.4 19.0
1999 04 02 16 19.34 +12 24.4 0.370 1.243 123.7 41.9 18.9
1999 04 07 16 09.52 +11 14.9 0.368 1.269 130.0 37.2 18.9
1999 04 12 15 58.03 +09 55.3 0.369 1.295 136.6 32.1 18.8
1999 04 17 15 45.18 +08 24.9 0.372 1.321 143.4 26.9 18.7
1999 04 22 15 31.47 +06 44.0 0.379 1.347 150.0 21.9 18.6
1999 04 27 15 17.53 +04 54.5 0.390 1.372 156.0 17.4 18.6
1999 05 02 15 03.97 +02 59.6 0.406 1.397 160.5 14.0 18.6
1999 05 07 14 51.32 +01 02.6 0.427 1.422 162.3 12.5 18.7
1999 05 12 14 40.01 -00 53.0 0.453 1.446 161.0 13.1 18.8
1999 05 17 14 30.32 -02 45.0 0.484 1.470 157.5 15.3 19.1
1999 05 22 14 22.41 -04 31.7 0.519 1.493 152.9 18.0 19.4
1999 05 27 14 16.29 -06 12.4 0.559 1.516 147.9 20.8 19.7
1999 06 01 14 11.86 -07 46.8 0.602 1.538 143.0 23.4 19.9
1999 06 06 14 09.00 -09 15.3 0.649 1.560 138.2 25.7 20.2
1999 06 11 14 07.57 -10 38.2 0.699 1.581 133.7 27.7 20.5
1999 06 16 14 07.42 -11 56.3 0.752 1.602 129.3 29.4 20.7
1999 06 21 14 08.44 -13 10.1 0.807 1.622 125.2 30.8 20.9
1999 06 26 14 10.47 -14 20.2 0.864 1.641 121.3 32.0 21.1
1999 07 01 14 13.39 -15 27.0 0.923 1.660 117.6 32.9 21.3
1999 07 06 14 17.11 -16 30.9 0.984 1.678 114.0 33.6 21.5
1999 07 11 14 21.53 -17 32.1 1.046 1.695 110.5 34.2 21.7
1999 07 16 14 26.60 -18 31.0 1.109 1.712 107.2 34.6 21.8
1999 07 21 14 32.24 -19 27.8 1.173 1.728 104.0 34.8 22.0
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-U31
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