108P/Ciffréo
Sign in to saveAlso known as 1985p Ciffreo, 1985 XVI Ciffreo, 1992s Ciffreo, 1993 I Ciffreo
108P/Ciffréo is a Jupiter-family comet with an orbital period of 7.25 years around the Sun. It is the only comet discovered by French astronomer, Jacqueline Ciffréo. The comet is noted for having a peculiar double morphology, in which the nucleus is accompanied by a comoving, detached, diffuse tail, which is probably a perspective artifact of particles ejected sunwards and then repelled by solar wind.
Key facts
- Comet.semimajor
- 3.744 AU
- Comet.eccentricity
- 0.581
- Comet.name
- 108P/Ciffréo
- Comet.image
- Comet 108PCiffreo - Ajacba07f2 hr.jpg
- Comet.caption
- Comet Ciffréo imaged by the Hubble Space Telescope from 31 January to 24 May 2022.
- Comet.discoverer
- Jacqueline Ciffréo
- Comet.discovery_site
- Caussols, France
- Comet.discovery_date
- 8 November 1985
- Comet.mpc_name
- P/1985 V1, P/1992 S1
- Comet.epoch
- 21 November 2025 (JD 2461000.5)
- Comet.observation_arc
- 36.38 years
- Comet.obs
- 2,612
- Comet.perihelion
- 1.664 AU
- Comet.aphelion
- 5.824 AU
- Comet.period
- 7.245 years
- Comet.inclination
- 11.432°
- Comet.asc_node
- 50.274°
- Comet.arg_peri
- 354.56°
via Wikipedia infobox
Wikidata facts
- Instance of
- Jupiter-family comet
- Parent body
- Sun
- Diameter
- 3.2
- Orbital period
- 2539.121660463486
- Image
- Comet 108PCiffreo - Ajacba07f2 hr.jpg
Show 13 more facts
- time of discovery or invention
- 1985-11-08
- provisional designation
- 1985p
- absolute magnitude
- 10.9
- orbital eccentricity
- 0.5810134476572392
- semi-major axis of an orbit
- 3.642420282502351
- periapsis
- 1.526125116349005
- apoapsis
- 5.758715448655698
- orbital inclination
- 13.98015613499469
- longitude of ascending node
- 52.40239463092706
- argument of periapsis
- 356.8617072910779
- mean anomaly
- 184.0170422340704
- time of periapsis
- 2459498.7281664885
- epoch
- May 19, 2018
via Wikidata · CC0
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Encyclopedic overview
4 sectionsContents
- Observational history
- Orbit
- References
- External links
108P/Ciffréo is a Jupiter-family comet with an orbital period of 7.25 years around the Sun. It is the only comet discovered by French astronomer, Jacqueline Ciffréo. The comet is noted for having a peculiar double morphology, in which the nucleus is accompanied by a comoving, detached, diffuse tail, which is probably a perspective artifact of particles ejected sunwards and then repelled by solar wind.
== Observational history == The comet was discovered by Jacqueline Ciffréo on 8 November 1985 using a 0.9 m Schmidt camera at Caussols. The comet was then a diffuse object with an apparent magnitude of 10. H. Kosai from the Tokyo Observatory noticed on 9 November that it also had a faint tail about 1.5 arcminutes long. An elliptical orbit was published by Daniel W. E. Green on 18 November, with an estimated orbital period of 7.81 years, while perihelion had taken place on 28 October 1985 at a distance of . Further observations revealed that the perihelion was on 30 October and the orbital period of the comet was 7.22 years. In December 1985, a detacted coma or tail was detected 6 arcseconds from the nucleus of the comet and extending for 20 arcseconds to the north-east. The visual magnitude of the comet was estimated to be 12.5.
Excerpted from Wikipedia’s “108P/Ciffréo” article, available under the CC BY-SA 4.0 licence.