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م روبالہ جمع: az:Halley kometi |
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سطر 5:
| discovery_date=1758 (first '''predicted'' perihelion)
| orbit_ref = <ref name=jpldata/>
| epoch=2449400.5<br />([[February 17]] [[1994ء|1994]])
| semimajor=17.8 [[
| perihelion=0.586 AU<br />last perihelion: [[February 9]] [[1986ء|1986]]<br />next perihelion: [[July 28]] [[2061]]<ref name=horizons> {{cite web | last = Yeomans | first = Donald K. | url=http://ssd.jpl.nasa.gov/horizons.cgi | title=Horizon Online Ephemeris System | publisher=California Institute of Technology, Jet Propulsion Laboratory | accessdate=2006-09-08}}</ref>
| aphelion=35.1 AU<br />([[December 9]] [[2023]])<ref name=horizons/>
| eccentricity=0.967
سطر 18:
|url=http://www.astrosociety.org/education/publications/tnl/06/06.html
|accessdate=2008-12-16}}</ref>, 11 km (JPL)<ref name=jpldata/>
| density=0.6<ref name=density/> (estimates range from 0.2 to 1.5 [[
|last=Peale |first=S.J.
|title=On the density of Halley's comet
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