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| title= Destruction of Long-period Comets {{Comets}} ...

*[[List of hyperbolic comets]] *[[List of non-periodic comets]] ...

...ttps://web.archive.org/web/20110617092654/http://spaceobs.org/en/asteroids-comets/faq/ |url-status=dead }}</ref> but more recent estimates place the pre-brea |title = International Visual Observations of Comets (I.V.O.C.) ...

One of the applications of Knudsen layer is in the coma of comets. It has been used specially in the coma chemistry model (ComChem model).<re ...

'''Antimatter comets''' and '''antimatter meteoroids''' are hypothetical [[comet]]s and [[meteor ...Kohoutek]] was observed, Rojanski again suggested hypothesis of antimatter comets in a letter in ''[[Physical Review Letters]]'', and suggested that [[gamma- ...

...e term is mostly used in the discovery and tracking of [[asteroids]] and [[comets]]. Arc length has the greatest influence on the accuracy of an orbital esti |+ Uncertainty in Earth approach distance by comets currently further than [[Uranus]]<br />that have not been observed in the l ...

...6), the Secretary of Commission for “Positions & Motions of Minor Planets, Comets & Satellites” (2012-2015), and the first President of the Cross-Division A- ...

...2003CrateringRates.pdf |bibcode=2003Icar..163..263Z |quote=1.5-km-diameter comets is currently N(d > 1.5&nbsp;km) = 0.005{{±|0.006|0.003}}&nbsp;per annum |ar ...ess-date=2009-07-24}}</ref> At the distance of Jupiter (5.2 AU) most small comets are not close enough to the Sun to be very [[Coma (cometary)|active]], and ...

...name="GC1680"/> Further observations of ISON, however, showed that the two comets are not related.<ref name="Kirch"/> ...f name="sekharandasher2013"/> In addition, meteor showers from long-period comets that make just one pass into the inner solar system are very rare, if ever ...

...=Planet Nine's orbit is seen pointing towards the top, while the clustered comets are seen towards the bottom.]] ==Oort cloud and comets== ...

...f carbonaceous asteroids or the estimated 10²⁶ kg total mass of comets, respectively.<ref name ="Lewis-1997" /><ref name="Lewis-1996" />|group="no ...pulation).{{Citation needed|date=September 2012}} Similar materials in the comets could support biomass and populations about one hundred times larger.{{Cita ...

{{For|other comets discovered by the Siding Spring Observatory|Comet Siding Spring (disambigua Comet Siding Spring passed [[Astronomy on Mars#Comets and meteors|extremely close]] to [[Mars]] on 19 October 2014 at 18:28 ± 0:0 ...

{{redirect|Comet Borisov|other comets discovered by Gennadiy Borisov|List of comets discovered by Gennadiy Borisov}} ...><ref name=MPEC2019-S72/> The name Borisov follows the tradition of naming comets after their discoverers. Before final designation as 2I/Borisov, the object ...

...oris]] (63.4&nbsp;ly), both of which show [[accretion disc]]s and signs of comets and planets. More suitable targets may be identified by space telescopes su ...rnal | last = Anders | first = E. | title = Prebiotic organic matter from comets and asteroids | journal = Nature | volume = 342 | pages = 255–257 | year = ...

...[[Astronomical unit|AU]]³, or 10¹² (1&nbsp;trillion) comets per cubic [[parsec]].<ref name="Francis" /> A more recent estimate by [[Dav ...9% of comets are ejected.<ref name="Choi" /> There is no reason to believe comets formed in other star systems would not be similarly scattered.<ref name="Va ...

...ucted research confirming that <math>k=2</math> for the delta effect for [[comets]]. He has written four books – two about [[Association football|football]] ...s as an independent scholar, including work with exoplanets, brown dwarfs, comets and Mars. He was a member of South Yorkshire's [[Mexborough and Swinton Ast ...

===Comets and asteroids=== ...hoemaker–Levy 9#Post-impact analysis|His analytic theory of the breakup of comets by planetary tidal forces]] resulted in [[Comet Shoemaker–Levy 9#Post-impac ...

|series=The Minor Planet Circulars / Minor Planets and Comets ...