ဟယ်လီကြယ်တံခွန်: တည်းဖြတ်မှု မူကွဲများ
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စာကြောင်း ၂၃ -
|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>{{Cite journal|title=Is the nucleus of Comet Halley a low density body?|author1=R. Z. Sagdeev |author2=P. E. Elyasberg |author3=V. I. Moroz. |journal=Nature|volume=331|bibcode=1988Natur.331..240S|issue=6153|date=1988|pages=240–242|doi=10.1038/331240a0}}</ref> (estimates range from 0.2 to 1.5 g/cm<sup>3</sup><ref name="Peale1989November">{{Cite journal
|author=S. J. Peale
|title=On the density of Halley's comet
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