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- Crommelin abstract "Comet Crommelin, also known as Comet Pons-Coggia-Winnecke-Forbes, is a periodic comet with an orbital period of 27 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 four comets not named after their discoverer(s), the other three being Comets Halley, Encke, and Lexell.The first observation was by Jean-Louis Pons (Marseille, France) on February 23, 1818, he followed the comet up 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.In 1872, John R. Hind produced a rough orbital calculation and observed it was close to that of Comet Biela, based on these observations, Edmund Weiss later speculated it may have been part of Biela's comet.The next observation was on November 10, 1873 by Jérôme E. Coggia (Marseille, France), and again on November 11 by Friedrich A. T. Winnecke (Strasbourg, France), but it was lost by November 16. Weiss and Hind took up the calculations and tried to match it again with the 1818 appearance.A third discovery was by Alexander F. I. Forbes (Cape Town, South Africa) on November 19, 1928, and confirmed by Harry E. Wood (Union Observatory, South Africa) on November 21. It was Crommelin who eventually established the orbit and finally linked the 1818 (Pons) and 1873 (Coggia-Winnecke) comets to it. (see Lost comet)During the 2011 perihelion passage 27P/Crommelin was recovered on 12 May 2011 at apparent magnitude 18.7.".
- Crommelin wikiPageExternalLink 027p.html.
- Crommelin wikiPageExternalLink 0027p.htm.
- Crommelin wikiPageExternalLink 5612707374006929794.
- Crommelin wikiPageExternalLink lc.htm.
- Crommelin wikiPageExternalLink 27p.gif.
- Crommelin wikiPageExternalLink horizons.cgi?find_body=1&body_group=sb&sstr=27P.
- Crommelin wikiPageExternalLink sbdb.cgi?sstr=27P;orb=1.
- Crommelin wikiPageExternalLink GRAS_Telescopes.ashx.
- Crommelin wikiPageExternalLink index.html.
- Crommelin wikiPageExternalLink 489.
- Crommelin wikiPageExternalLink 5929552195.
- Crommelin wikiPageExternalLink show_object?object_id=27P&commit=Show.
- Crommelin wikiPageID "9247086".
- Crommelin wikiPageRevisionID "604842744".
- Crommelin designations "1818".
- Crommelin discoverer Jean-Louis_Pons.
- Crommelin discoveryDate "1818-02-23".
- Crommelin eccentricity "0.919".
- Crommelin epoch "1984-03-01".
- Crommelin hasPhotoCollection Crommelin.
- Crommelin inclination "29.1".
- Crommelin lastP "1984-02-20".
- Crommelin lastP "2011-08-03".
- Crommelin name "27".
- Crommelin nextP "2039-05-27".
- Crommelin perihelion "0.735".
- Crommelin period "8.6467824E8".
- Crommelin semimajor "9.09".
- Crommelin wordnet_type synset-comet-noun-1.
- Crommelin subject Category:Astronomical_objects_discovered_in_1818.
- Crommelin subject Category:Comets.
- Crommelin subject Category:Halley-type_comets.
- Crommelin subject Category:Periodic_comets.
- Crommelin comment "Comet Crommelin, also known as Comet Pons-Coggia-Winnecke-Forbes, is a periodic comet with an orbital period of 27 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.".
- Crommelin label "27P/Crommelin".
- Crommelin label "27P/Crommelin".
- Crommelin label "27P/Crommelin".
- Crommelin label "27P/Crommelin".
- Crommelin label "27P/Crommelin".
- Crommelin label "Комета Кроммелина".
- Crommelin label "クロンメリン彗星".
- Crommelin label "克羅瑪林彗星".
- Crommelin sameAs Crommelin.
- Crommelin sameAs Crommelin.
- Crommelin sameAs Crommelin.
- Crommelin sameAs クロンメリン彗星.
- Crommelin sameAs Crommelin.
- Crommelin sameAs Crommelin.
- Crommelin sameAs m.0281j3r.
- Crommelin sameAs Q649799.
- Crommelin sameAs Q649799.
- Crommelin wasDerivedFrom Crommelin?oldid=604842744.
- Crommelin isPrimaryTopicOf Crommelin.