| 词条 | 161P/Hartley–IRAS |
| 释义 |
| name=161P/Hartley-IRAS | image= | discoverer=Malcolm Hartley IRAS | discovery_date=November 4, 1983 | designations=1984 III; 2004 V2 | epoch=March 6, 2006 | semimajor=7.734 AU | perihelion=1.275 AU | aphelion=14.19 AU | eccentricity=0.8351 | period=21.51 yr | inclination= 95.6899° | last_p=June 20, 2005 | next_p=2026 Oct. 29 2026 Nov. 27[2][3][4] 2026 December 18[5] }}161P/Hartley–IRAS is a periodic comet with an orbital period of 21 years. It fits the classical definition of a Halley-type comet with (20 years < period < 200 years).[6] References1. ^1 {{cite web |date=2006-07-16 |title=161P/Hartley-IRAS |publisher=Seiichi Yoshida's Comet Catalog |author=Seiichi Yoshida |url=http://www.aerith.net/comet/catalog/0161P/index.html |accessdate=2012-02-19}} [1][2][3][4][5]2. ^1 {{cite web |author=Horizons output |url=http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=161P |title=Observer Table for Comet 161P/Hartley-IRAS |accessdate=2011-06-13}} (Observer Location:@sun) 3. ^1 {{cite web |title=161P/Hartley-IRAS Orbit |url=http://www.minorplanetcenter.net/db_search/show_object?object_id=161P |publisher=Minor Planet Center |accessdate=2014-06-18}} 4. ^1 {{cite web |date=2005-10-12 |title=Note number : 0132 P/Hartley-IRAS : 161P |publisher=Institut de mécanique céleste et de calcul des éphémérides |author=Patrick Rocher |url=http://www.imcce.fr/en/ephemerides/donnees/comets/FICH/CIF0132.php |accessdate=2012-02-19}} 5. ^1 {{cite web |type=2005-10-12 last obs |title=JPL Small-Body Database Browser: 161P/Hartley-IRAS |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=161P |publisher=Jet Propulsion Laboratory |accessdate=2012-07-26}} }} External links
4 : Periodic comets|Halley-type comets|IRAS catalogue objects|Astronomical objects discovered in 1983 |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。