MPEC 1998-W24: 1998 WA4
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M.P.E.C. 1998-W24 Issued 1998 Nov. 22, 17:36 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 WA4
Observations:
J98W04A* C1998 11 19.27862 03 48 23.65 -18 34 51.8 703
J98W04A C1998 11 19.28743 03 48 23.62 -18 34 48.3 703
J98W04A C1998 11 19.29620 03 48 23.56 -18 34 45.5 17.6 R 703
J98W04A C1998 11 20.18737 03 48 23.71 -18 28 48.9 17.7 R 860
J98W04A C1998 11 20.19824 03 48 24.80 -18 28 59.8 703
J98W04A C1998 11 20.19963 03 48 23.54 -18 28 46.5 860
J98W04A C1998 11 20.20332 03 48 24.84 -18 28 58.3 703
J98W04A C1998 11 20.22000 03 48 24.82 -18 28 52.0 703
J98W04A C1998 11 20.26911 03 48 24.50 -18 28 32.0 703
J98W04A C1998 11 20.27584 03 48 24.42 -18 28 29.8 703
J98W04A C1998 11 21.21347 03 48 25.43 -18 21 43.1 703
J98W04A C1998 11 21.24042 03 48 25.29 -18 21 30.7 703
J98W04A C1998 11 21.39600 03 48 24.41 -18 20 17.6 703
J98W04A C1998 11 22.18890 03 48 26.19 -18 13 50.3 703
J98W04A C1998 11 22.20354 03 48 26.10 -18 13 43.2 703
J98W04A C1998 11 22.27421 03 48 25.69 -18 13 08.1 703
J98W04A C1998 11 22.36917 03 48 25.15 -18 12 18.3 703
Observer details:
703 Catalina Sky Survey. Observers C. W. Hergenrother, T. B. Spahr,
J. W. Brownlee. Measurer T. B. Spahr. 0.41-m f/3 Schmidt + CCD.
860 Valinhos. Observer P. R. Holvorcem. 0.20-m f/3.3 reflector + CCD.
Orbital elements:
1998 WA4
Epoch 1998 Nov. 3.0 TT = JDT 2451120.5 Williams
M 354.32244 (2000.0) P Q
n 0.22858210 Peri. 285.68769 +0.47366643 -0.86779004
a 2.6491582 Node 135.02282 +0.86732231 +0.42999842
e 0.4726478 Incl. 12.27454 +0.15294481 +0.24908192
P 4.31 H 17.7 G 0.15
From 17 observations 1998 Nov. 19-22.
Ephemeris:
1998 WA4 a,e,i = 2.65, 0.47, 12 q = 1.3970
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 11 13 03 48.14 -18 55.0 0.485 1.405 142.2 25.6 18.0
1998 11 23 03 48.43 -18 06.5 0.482 1.398 141.6 26.0 18.0
1998 12 03 03 48.96 -15 52.6 0.489 1.398 140.4 26.7 18.1
1998 12 13 03 51.16 -12 24.5 0.508 1.405 138.4 27.7 18.2
1998 12 23 03 56.07 -08 02.7 0.539 1.419 135.6 29.0 18.4
1999 01 02 04 04.20 -03 13.3 0.582 1.440 132.2 30.4 18.6
1999 01 12 04 15.48 +01 38.6 0.639 1.467 128.1 31.8 18.9
1999 01 22 04 29.63 +06 14.3 0.710 1.499 123.7 33.1 19.2
1999 02 01 04 46.27 +10 21.2 0.794 1.537 119.1 34.1 19.5
1999 02 11 05 04.87 +13 53.1 0.890 1.578 114.3 34.7 19.9
1999 02 21 05 25.01 +16 48.4 0.999 1.623 109.5 35.0 20.2
1999 03 03 05 46.29 +19 07.9 1.117 1.672 104.7 35.0 20.5
1999 03 13 06 08.28 +20 53.9 1.245 1.722 99.9 34.6 20.8
1999 03 23 06 30.71 +22 09.5 1.381 1.775 95.2 34.0 21.1
1999 04 02 06 53.28 +22 57.9 1.524 1.829 90.4 33.1 21.3
1999 04 12 07 15.76 +23 22.4 1.673 1.884 85.7 32.0 21.6
1999 04 22 07 37.99 +23 25.9 1.825 1.940 80.9 30.8 21.8
1999 05 02 07 59.83 +23 11.3 1.981 1.996 76.2 29.4 22.0
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-W24
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