Central Bureau for Astronomical Telegrams
IAUC 4901: 1989 VB
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Circular No. 4901
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET MARSDEN or GREEN@CFAPS2.SPAN
1989 VB
R. H. McNaught, Siding Spring Observatory, reports the discovery
by Q. A. Parker of a fast-moving object on a plate taken by M. Hartley
with the 1.2-m U.K. Schmidt. The object was independently discovered
at Palomar by C. S. Shoemaker, E. M. Shoemaker, and D. Levy with the
0.46-m Schmidt on Nov. 3. The following precise positions have been
reported:
1989 UT R.A. (1950) Decl. Mag. Observer
Nov. 1.41050 23 41 07.24 - 3 34 44.0 Hartley
1.45564 23 41 41.59 - 3 28 52.9 16 "
3.13177 0 03 17.44 - 0 03 30.7 16.5 Shoemaker
3.42926 0 06 53.57 + 0 34 23.0 Gilmore
3.46190 0 07 16.36 + 0 38 12.7 "
4.44037 0 18 58.66 + 2 30 29.3 "
4.47648 0 19 22.73 + 2 34 31.4 "
4.50134 0 19 41.03 + 2 36 56.7 16 Russell
5.16597 0 27 20.06 + 3 47 18.2 16.7 Shoemaker
5.30469 0 28 47.77 + 4 02 02.5 "
5.36788 0 29 28.14 + 4 08 42.4 "
5.63432 0 32 24.09 + 4 38 27.0 Russell
M. Hartley (Siding Spring). R plate. Measurer R. H. McNaught.
C. S. Shoemaker, E. M. Shoemaker, and D. Levy (Palomar). Asteroidal appearance.
A. C. Gilmore and P. M. Kilmartin (Mount John Observatory).
K. S. Russell (Siding Spring). J plates. Measurer
R. H. McNaught. Although the end of the exposure was affected by
clouds, the Nov. 4 image shows a distinct glow to the southeast,
separated from the trail by 0'.5 and about the same distance ahead in
the direction of motion; the glow extends radially away from the trail
for 1'.7. There is no evidence of this glow on the Nov. 5 tracked
exposure, which also terminated in clouds.
Orbital elements by B. G. Marsden, Center for Astrophysics,
from 12 observations Nov. 1-5:
T = 1989 Oct. 8.226 ET Peri. = 329.526
e = 0.45660 Node = 38.390 1950.0
q = 1.00519 AU Incl. = 2.118
a = 1.84983 AU n = 0.391747 P = 2.52 years
1989 November 7 (4901) Daniel W. E. Green
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