Talk:Lexell's Comet

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I cannot find any images of Lexell's Comet, though Messier may have done a drawing - I've added an image of 17P/Holmes as it closely resembles the descriptions of Lexell's Comet, just to give readers an indication. —Preceding unsigned comment added by Svejk74 (talkcontribs) November 21, 2008

Such appearance of 17P was due to very rare and unusual outburst, but D/1770 L1 appearance was accounted for close Earth fly-by (0.0146 AU). 17P appearance was very unusual, and it will be very incredible if any other comet will have such appearance. I think, comparison of D/1770 L1 with 17P must be deleted. — Chesnok (talk) 09:12, 21 December 2008 (UTC)
Well, the descriptions of D/1770 L1 all appear to indicate a very large coma with little or no tail - I still feel this is close to the appearance of 17P/Holmes during outburst.
I suppose a comparable photographed comet D/1770 L1 might be Comet IRAS-Araki-Alcock, but I can't seem to find any copyright-free images (other than the IRAS ones, which are not very helpful). Svejk74 (talk) 10:28, 21 December 2008 (UTC)
17P Has very sharp coma edges like no other comets. Note the differences between 17P and C/1983 H1:
Chesnok (talk) 09:11, 27 December 2008 (UTC)

Impact with Jupiter?[edit]

If Lexell proposed it was disturbed in its orbit, has anyone suggested it ran into Jupiter? I recall this inference from when I first heard of it. MartinSFSA (talk) 15:03, 2 September 2010 (UTC)

No one. I've read a fair amount by now, too. Saros136 (talk) 22:50, 12 May 2014 (UTC)
Jupiter likely lifted the perihelion point and perturbed the comet outwards. Lexell's Comet could very well be 50AU from the Sun. -- Kheider (talk) 02:33, 10 September 2015 (UTC)

Suggestions for Illustrations[edit]

Rather than an image of the comet, I'd like to suggest that we consider adding the following images:

  • A simulation of how the comet would have appeared in the Earths sky at closest approach
  • A diagram of the comets position relative to the Earth at closest approach
  • A diagram showing the 'best fit' trajectory for the 1779 Jupiter encounter

I am not sure how to go about these myself, so I leave it free to other members to consider.Graham1973 (talk) 14:38, 12 February 2011 (UTC)