ဟယ်လီကြယ်တံခွန်: တည်းဖြတ်မှု မူကွဲများ

Infobox
အရေးမကြီးNo edit summary
စာကြောင်း ၁၇ -
| arg_peri=111.33°<ref name=horizons/>
| tjup=-0.605
| dimensions= 15×8 km,<ref name=Learn/>{{Cite 11 km ([[Geometric mean|mean]] diameter)<ref name=jpldata/>web
|date=1986
|title=What Have We Learned About Halley's Comet?
|publisher=Astronomical Society of the Pacific (No. 6 – Fall 1986)
|url=http://www.astrosociety.org/education/publications/tnl/06/06.html
|accessdate=16 December 2008}}</ref> 11 km ([[Geometric mean|mean]] diameter)<ref name=jpldata/>
| density=0.6<ref name=density/> (estimates range from 0.2 to 1.5 g/cm<sup>3</sup><ref name="Peale1989November">{{Cite journal
|author=S. J. Peale