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C/1989 Q1 (Okazaki–Levy–Rudenko)

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For other comets discovered by David H. Levy, see Comet Levy.

C/1989 Q1 (Okazaki–Levy–Rudenko)
Discovery
Discovered by
Discovery date24–26 August 1989
Orbital characteristics[1]
Epoch8 October 1989 (JD 2447807.5)
Observation arc122 days
Number of
observations		255
Perihelion0.642 AU
Eccentricity1.00006
Inclination90.146°
275.51°
Argument of
periapsis		150.57°
Last perihelion11 November 1989
Earth MOID0.288 AU
Jupiter MOID1.008 AU
Physical characteristics[2]
Comet total
magnitude (M1)		8.3
4.9
(1989 apparition)

Comet Okazaki–Levy–Rudenko, also known by its formal designation C/1989 Q1, is a hyperbolic comet that was barely visible to the naked eye from August 1989 to January 1990.[2] It is also notable for having an orbit that is almost perpendicular to the ecliptic.[3]

Physical characteristics

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In December 1989, the comet produced two unusual features, a wedge-shaped coma and an antisolar jet.[4] The high levels of polarization in the vicinity of the jet suggest the presence of dust particles that is relatively smaller than that was observed from Halley in 1986.[4]

References

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  1. ^ "C/1989 Q1 (Okazaki–Levy–Rudenko) – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 28 May 2025.
  2. ^ a b G. W. Kronk; M. Meyer; D. A. J. Seargent (2017). Cometography: A Catalog of Comets. Vol. 6: 1983–1993. Cambridge University Press. pp. 439–444. ISBN 978-0-521-87216-4.
  3. ^ D. E. Machholz (1989). "The Appearance of a New Comet: Comet Okazaki–Levy–Rudenko (1989r)". Journal of the Association of Lunar and Planetary Observers. 33: 171–172. Bibcode:1989JALPO..33..171M. ISSN 0039-2502.
  4. ^ a b N. Eaton; S. M. Scarrott; R. D. Wolstencroft (1991). "Polarization studies of comet Okazaki–Levy–Rudenko". Monthly Notices of the Royal Astronomical Society. 250 (3): 654–656. doi:10.1093/mnras/250.3.654.
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