MPEC 1998-X08: 1998 WH24
The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.
Read MPEC 1998-X07
Read MPEC 1998-X09
M.P.E.C. 1998-X08 Issued 1998 Dec. 3, 18:01 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 WH24
Observations:
J98W24H* C1998 11 19.41122 03 35 39.49 +20 47 23.4 20.2 R 695
J98W24H C1998 11 19.48013 03 35 39.15 +20 47 22.2 695
J98W24H C1998 11 24.28138 03 35 14.56 +20 46 12.6 20.0 R 688
J98W24H C1998 11 24.28953 03 35 14.53 +20 46 12.8 688
J98W24H C1998 11 24.29734 03 35 14.53 +20 46 12.8 688
J98W24H C1998 11 24.30465 03 35 14.47 +20 46 12.7 688
J98W24H C1998 11 24.31334 03 35 14.45 +20 46 12.3 688
J98W24H C1998 11 24.32090 03 35 14.39 +20 46 12.2 688
J98W24H C1998 11 25.14568 03 35 10.23 +20 45 59.9 20.5 R 688
J98W24H C1998 11 25.15321 03 35 10.18 +20 46 00.0 688
J98W24H C1998 11 25.16051 03 35 10.13 +20 45 59.6 688
J98W24H C1998 11 25.16782 03 35 10.11 +20 45 59.6 688
J98W24H C1998 11 25.17620 03 35 10.05 +20 45 59.6 688
J98W24H C1998 11 25.19426 03 35 09.97 +20 45 59.7 688
J98W24H C1998 11 25.20611 03 35 09.90 +20 45 59.1 688
J98W24H C1998 11 25.21355 03 35 09.86 +20 45 59.0 688
J98W24H C1998 11 25.22179 03 35 09.83 +20 45 58.9 688
J98W24H C1998 11 26.20644 03 35 04.81 +20 45 44.4 20.6 R 688
J98W24H C1998 11 26.21575 03 35 04.77 +20 45 44.4 21.3 V 688
J98W24H C1998 11 26.22708 03 35 04.70 +20 45 44.2 688
J98W24H C1998 11 26.23866 03 35 04.65 +20 45 44.1 688
J98W24H C1998 11 26.27447 03 35 04.46 +20 45 43.6 688
J98W24H C1998 11 26.28382 03 35 04.43 +20 45 43.4 688
J98W24H C1998 11 26.31758 03 35 04.26 +20 45 42.9 688
J98W24H C1998 11 26.32689 03 35 04.21 +20 45 42.8 688
J98W24H C1998 11 26.36852 03 35 04.00 +20 45 42.3 688
J98W24H C1998 11 26.37814 03 35 03.94 +20 45 41.8 688
J98W24H C1998 11 26.41302 03 35 03.80 +20 45 41.6 688
J98W24H C1998 11 26.42205 03 35 03.74 +20 45 41.3 688
Observer details:
688 Lowell Observatory, Anderson Mesa Station. Observer L. A. Wasserman.
Measurer M. W. Buie. 1.8-m reflector + CCD
695 Kitt Peak. Observers R. L. Millis, M. W. Buie, R. M. Wagner, J. L. Elliot.
Measurers M. W. Buie, R. L. Millis. 4.0-m reflector + CCD.
Orbital elements:
1998 WH24
Assumed circular orbit
Epoch 1998 Nov. 23.0 TT = JDT 2451140.5 Marsden
(2000.0) P Q
n 0.00352223 Arg.lat. 6.43947 +0.55035383 -0.81769877
a 42.7816679 Node 50.31329 +0.75591905 +0.40216030
e 0.0000000 Incl. 12.66766 +0.35453780 +0.41186868
P 280 H 5.0 G 0.15
From 29 observations 1998 Nov. 19-26.
Ephemeris:
1998 WH24 a,e,i = 42.78, 0.00, 13
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 12 03 03 34.51 +20 44.1 41.826 42.782 165.6 0.3 21.3
1998 12 13 03 33.72 +20 41.8 41.885 42.782 155.3 0.6 21.4
1998 12 23 03 33.01 +20 39.6 41.973 42.782 145.0 0.8 21.4
1999 01 02 03 32.39 +20 37.7 42.085 42.782 134.6 0.9 21.4
1999 01 12 03 31.91 +20 36.2 42.219 42.782 124.3 1.1 21.4
1999 01 22 03 31.57 +20 35.2 42.371 42.782 114.1 1.2 21.5
1999 02 01 03 31.38 +20 34.7 42.535 42.782 103.9 1.3 21.5
1999 02 11 03 31.37 +20 34.8 42.706 42.782 93.7 1.3 21.5
1999 02 21 03 31.52 +20 35.4 42.879 42.782 83.7 1.3 21.5
1999 03 03 03 31.84 +20 36.6 43.049 42.782 73.7 1.3 21.5
1999 03 13 03 32.31 +20 38.4 43.211 42.782 63.8 1.2 21.5
1999 03 23 03 32.92 +20 40.6 43.360 42.782 54.0 1.1 21.5
1999 04 02 03 33.67 +20 43.4 43.491 42.782 44.3 0.9 21.5
1999 04 12 03 34.52 +20 46.5 43.602 42.782 34.7 0.8 21.5
The observers add that the Nov. 26 photometry more specifically yields
R = 20.56 +/- 0.06, V = 21.27 +/- 0.12 and V-R = +0.71 +/- 0.06 on the
Kron-Cousins system. The resulting H = 5.0 corresponds, assuming a
4-percent albedo, to a diameter of roughly 560 km. For comparison,
Jewitt, Luu and Trujillo (1998, A.J. 115, 2125) have estimated a diameter of
759 km for 1996 TO66.
Brian G. Marsden (C) Copyright 1998 MPC M.P.E.C. 1998-X08
Read MPEC 1998-X07
Read MPEC 1998-X09
Our Web policy. Index to the CBAT/MPC/ICQ pages.
