About: 111P/Helin–Roman

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111P/Helin–Roman–Crockett is a periodic comet in the Solar System. It was discovered by Eleanor and Ron Helin on 5 January 1989 from images obtained on the 3rd and 4th of that month. It is a Jupiter family comet known for extremely close approaches to Jupiter being a Quasi-Hilda comet. During these approaches, it actually orbits Jupiter. The last such approach was in 1976, the next will be in 2071. The Jovian orbits are highly elliptical and subject to intense Solar perturbation at apojove which eventually pulls the comet out of Jovian orbit for the cycle to begin anew.

Attributes	Values
rdf:type	yago:WikicatAstronomicalObjectsDiscoveredIn1989 yago:Asteroid109208702 yago:CelestialBody109239740 yago:Comet109251407 yago:ExtraterrestrialObject109277686 yago:MinorPlanet109355623 yago:NaturalObject100019128 yago:Object100002684 yago:PhysicalEntity100001930 yago:WikicatHildaAsteroids planet yago:Whole100003553 yago:WikicatEncke-typeComets yago:WikicatPeriodicComets
rdfs:label	111P/Helin–Roman–Crockett (en) 111P/Helin-Roman-Crockett (fr) 111P/Helin-Roman-Crockett (it) ヘリン・ローマン・クロケット彗星 (ja) 111P/Helin-Roman-Crockett (pl) 111P/Helin-Roman-Crockett (pt) 111P/Хелин — Романа — Крокетта (ru) Helin-Roman-Crockett (sv)
rdfs:comment	La comète Helin-Roman-Crockett, officiellement 111P/Helin-Roman-Crockett, est une comète périodique du système solaire, découverte le 2 janvier 1989 par Eleanor Francis Helin à l'observatoire Palomar en Californie. (fr) ヘリン・ローマン・クロケット彗星（ヘリン・ローマン・クロケットすいせい、111P/Helin–Roman–Crockett）は、エンケ族に属する周期彗星である。ヘリン・ローマン・クロケット彗星は、1989年も始まったばかりの1月2日にエレノア・ヘリン、、ブライアン・ローマン、らによって発見された。公転周期約8年の短い周期で公転する短周期彗星であり、軌道長半径は約5億2000万km、離心率は0.12と比較的円に近い楕円軌道で公転している。軌道が木星軌道と近いため木星と頻繁に接近し、1969年10月16日には木星から約800万kmまで接近した。また、軌道解析の結果では1968年から1985年までは、頻繁に軌道を変える一時的な衛星となったと見られる。2068年から2986年までの間には再び木星に捕獲され、木星の周りを6周する一時的な衛星となるとみられている。また、2071年には木星から約500万kmまで接近すると予測されている。 (ja) 111P/Helin-Roman-Crockett é um cometa descoberto por Eleanor Helin, , , em 2 de janeiro de 1989.. (pt) 111P/Helin-Roman-Crockett – kometa krótkookresowa, należąca do grupy komet typu Enckego. (pl) 111P/Helin–Roman–Crockett is a periodic comet in the Solar System. It was discovered by Eleanor and Ron Helin on 5 January 1989 from images obtained on the 3rd and 4th of that month. It is a Jupiter family comet known for extremely close approaches to Jupiter being a Quasi-Hilda comet. During these approaches, it actually orbits Jupiter. The last such approach was in 1976, the next will be in 2071. The Jovian orbits are highly elliptical and subject to intense Solar perturbation at apojove which eventually pulls the comet out of Jovian orbit for the cycle to begin anew. (en) La Cometa Helin-Roman-Crockett, formalmente indicata 111P/Helin-Roman-Crockett, è una cometa periodica del sistema solare, appartenente alla famiglia di comete quasi-Hilda. È stata individuata il 2 gennaio 1989 dall'astronoma statunitense Eleanor Helin su una piastra fotografica ripresa da Ron Helin, Brian Roman e dall'Osservatorio di Monte Palomar. La cometa percorre un'orbita quasi circolare, caratterizzata da un periodo di 8,14 anni, da una distanza perielica di circa 3,5 UA e da una bassa inclinazione sul piano dell'eclittica, pari a circa 4°. (it) Комета Хелин — Романа — Крокетта (111P/Helin-Roman-Crockett) — короткопериодическая комета типа Энке, которая была открыта 5 января 1989 года американским астрономом Элеанор Хелин на фотопластинке, полученной её коллегами Роном Хелином, Брайаном Романом и Ренди Крокеттом с помощью 0,46-метрового телескопа Шмидта в Паломарской обсерватории в ночь со 2 на 3 января. На момент открытия она имела яркость 15,5 m видимой звёздной величины и была описана как «сконденсированная, с комой и небольшим хвостом на северо-западе». Орбита кометы имеет необычную круглую форму, что зачастую приводит к крайне тесным сближениям с Юпитером. Комета обладает довольно коротким периодом обращения вокруг Солнца — чуть более 8,48 года. (ru) Helin-Roman-Crockett (111P/Helin-Roman-Crockett) är en periodisk komet. Den upptäcktes 5 januari 1989 av Eleanor F. Helin när hon studerade bilder tagna av , Brian P. Roman och vid Palomarobservatoriet. Senare hittade man även kometen på bilder tagna 2 och 3 januari. (sv)
name	111 (xsd:integer)
dcterms:subject	Astronomical objects discovered in 1989 Comets in 2013 Discoveries by Brian P. Roman Discoveries by Eleanor F. Helin Encke-type comets Numbered comets Periodic comets
Wikipage page ID	4027018 (xsd:integer)
Wikipage revision ID	1050947224 (xsd:integer)
Link from a Wikipage to another Wikipage	Perturbation (astronomy) Semi-major axis List of observatory codes List of periodic comets Astronomical objects discovered in 1989 Comets in 2013 Discoveries by Brian P. Roman Discoveries by Eleanor F. Helin Encke-type comets Numbered comets Periodic comets Comet Quasi-Hilda comet Eleanor F. Helin Palomar Observatory Julian year (astronomy) Brian P. Roman Astronomical Unit Tisserand's parameter Solar System Minor Planet Center dbr:Randy_L._Crockett Ron Helin Shoemaker-Levy 9
Link from a Wikipage to an external page	http://www.oaa.gr.jp/~oaacs/nk.htm http://cometography.com/pcomets/111p.html http://ssd.jpl.nasa.gov/horizons.cgi%3Ffind_body=1&body_group=sb&sstr=111P http://ssd.jpl.nasa.gov/sbdb.cgi%3Fsstr=111P;orb=1 http://www.aerith.net/comet/catalog/0111P/index.html http://www.oaa.gr.jp/~oaacs/nk/nk797.htm https://web.archive.org/web/20160304113352/http:/scully.cfa.harvard.edu/cgi-bin/returnprepeph.cgi%3Fd=c&o=0111P
sameAs	111P/Helin–Roman–Crockett 111P/Helin–Roman–Crockett 111P/Helin–Roman–Crockett 111P/Helin–Roman–Crockett 111P/Helin–Roman–Crockett 111P/Helin–Roman–Crockett 111P/Helin–Roman–Crockett 111P/Helin–Roman–Crockett 111P/Helin–Roman–Crockett 111P/Helin–Roman–Crockett 111P/Helin–Roman–Crockett 111P/Helin–Roman–Crockett 111P/Helin–Roman–Crockett 111P/Helin–Roman–Crockett
dbp:wikiPageUsesTemplate	dbt:Cite_journal dbt:Comets dbt:Infobox_Comet dbt:PeriodicComets_Navigator dbt:Reflist dbt:Short_description
aphelion	4.607 (astronomicalUnit)
designations	1988 (xsd:integer)
discoverer	Eleanor F. Helin Brian P. Roman dbr:Randy_L._Crockett Ron Helin Palomar Observatory (en)
discovery date	1989-01-05 (xsd:date)
eccentricity	0.140200 (xsd:double)

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