27P/Crommelin
Sign in to saveComet Crommelin, also known as Comet Pons-Coggia-Winnecke-Forbes, is a periodic comet with an orbital period of almost 28 years. It fits the classical definition of a Halley-type comet with (20 years < period < 200 years). It is named after the British astronomer Andrew C. D. Crommelin who calculated its orbit in 1930. It is one of only five known comets that are not named after their discoverer(s) It next comes to perihelion (closest approach to the Sun) around 27 May 2039 when it will be near a maximum near-perihelion distance from Earth.
Key facts
- Comet.name
- 27P/Crommelin
- Comet.image
- Comet Forbes 1928c - F. Quénisset - 28-10-1928.jpg
- Comet.caption
- Comet Crommelin photographed by Ferdinand Quénisset on 28 October 1928
- Comet.discovery_date
- 23 February 1818
- Comet.epoch
- 18 July 2011 (JD 2455760.5)
- Comet.observation_arc
- 193.92 years
- Comet.obs
- 497
- Comet.perihelion
- 0.748 AU
- Comet.aphelion
- 17.659 AU
- Comet.semimajor
- 9.204 AU
- Comet.eccentricity
- 0.91874
- Comet.period
- 27.922 years
- Comet.inclination
- 28.96°
- Comet.asc_node
- 250.64°
- Comet.arg_peri
- 195.98°
- Comet.mean
- 359.41°
- Comet.tjup
- 1.481
- Comet.Earth_moid
- 0.229 AU
via Wikipedia infobox
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Encyclopedic overview
5 sectionsContents
- Observational history
- References
- Notes
- Citations
- External links
Comet Crommelin, also known as Comet Pons-Coggia-Winnecke-Forbes, is a periodic comet with an orbital period of almost 28 years. It fits the classical definition of a Halley-type comet with (20 years < period < 200 years). It is named after the British astronomer Andrew C. D. Crommelin who calculated its orbit in 1930. It is one of only five known comets that are not named after their discoverer(s) It next comes to perihelion (closest approach to the Sun) around 27 May 2039 when it will be near a maximum near-perihelion distance from Earth.
== Observational history == The first observation was by Jean-Louis Pons (Marseille, France) on February 23, 1818, he followed the comet until February 27 but was prevented further by bad weather. Johann Franz Encke attempted to calculate the orbit but was left with very large errors.
Excerpted from Wikipedia’s “27P/Crommelin” article, available under the CC BY-SA 4.0 licence.