Home›Astronomical objects discovered in 1965›C/1965 S1 (Ikeya-Seki)🌐Tiếng ViệtEnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTiếng ViệtTürkçeРусскийالعربيةไทย한국어中文日本語EntityQ872242· pop 33· linked from 599 articlesC/1965 S1 (Ikeya-Seki)Also known as Comet Ikeya-Sekisungrazing comet first observed in 1965Key factsDiscovered byKaoru Ikeya , Tsutomu SekiDiscovery siteJapanDiscovery date18 September 1965Alternative designations1965 VIII, 1965fEpoch7 October 1965 ( JD 2439040.5)Observation arc115 daysNumber of observations101–119Orbit typeKreutz sungrazer , (Population II)Aphelion183 AU (A), 207 AU (B)Perihelion0.007786 AU (A), 0.007778 AU (B)Semi major axis91.6 AU (A), 103.7 AU (B)Eccentricity0.999915 (A), 0.999925 (B)Available in 32 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةAfrikaansConnectionscomet tailEntitycometEntityCategoriesAstronomical objects discovered in 1965Destroyed cometsDiscoveries by amateur astronomersDiscoveries by Tsutomu SekiGreat cometsKreutz SungrazersLong-period cometsScience and technology in JapanSplit comets