ဟယ်လီကြယ်တံခွန်: တည်းဖြတ်မှု မူကွဲများ
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စာကြောင်း ၂၈ -
|journal=Icarus
|volume=82 |issue=1 |pages=36–49 |date=1989 |doi=10.1016/0019-1035(89)90021-3 |quote=densities obtained by this procedure are in reasonable agreement with intuitive expectations of densities near 1 g/cm3, the uncertainties in several parameters and assumptions expand the error bars so far as to make the constraints on the density uniformative ... suggestion that cometary nuclei tend to by very fluffy, ... should not yet be adopted as a paradigm of cometary physics. |bibcode=1989Icar...82...36P}}</ref>)
| mass= 2.2{{e|14}} kg<ref name=mass>{{Cite journal|title=Halley, comet's mass loss and age|author1=G. Cevolani |author2=G. Bortolotti |author3=A. Hajduk |url=http://www.springerlink.com/content/0r3801302547v3x8/|date=1987|publisher=Italian Physical Society|journal=Il Nuovo Cimento C|volume=10|issue=5|pages=587–591|doi=10.1007/BF02507255|bibcode = 1987NCimC..10..587C }}</ref>
| escape_velocity = ~{{v2|0.00000022|5.5}} [[Metre per second|km/s]]
| albedo= 0.04<ref name=dark>{{Cite web
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