Talk:19P/Borrelly

Why is it so bright?

I'd like the article to explain: The comet article states that comets are less reflective than asphalt. Why does Borrelly appear to be so bright in this photo? Tempshill 20:39, 6 September 2007 (UTC)

It looks actually pretty dark to me :)... But seriously, this image was created and processed with that fact in mind, so it shows artificially large contrasts. Awolf002 03:14, 7 September 2007 (UTC)

Requested move

The following discussion is an archived discussion of the proposal. Please do not modify it. Subsequent comments should be made in a new section on the talk page. No further edits should be made to this section.

The result of the proposal was no consensus to support move. JPG-GR (talk) 04:21, 28 November 2008 (UTC)

19P/Borrelly → Comet Borrelly — Wikipedia:Naming_conventions_(astronomical_objects)#Comets states that extremely famous comets should be titled after their commonly used name, not their scientific designations. Borrelly is famous as it has been visited by a spacecraft. Google search suggests that "Comet Borrelly" is commoner than "Borrelly's Comet". The current page Comet Borrelly can be renamed Comet Borrelly (disambiguation). — Masursky (talk) 20:14, 21 November 2008 (UTC)

Survey

Feel free to state your position on the renaming proposal by beginning a new line in this section with *'''Support''' or *'''Oppose''', then sign your comment with ~~~~. Since polling is not a substitute for discussion, please explain your reasons, taking into account Wikipedia's naming conventions.

• Oppose. There are several comets named "Comet Borrelly" and it would be wrong if one of them will be named solely "Comet Borrelly" and others will not. The page "Comet Borrelly" MUST BE a disambiguation page, and this is the only right solution. — Chesnok (talk) 09:05, 22 November 2008 (UTC)

• Oppose The search for "Comet Borrelly" goes to a disambiguation page, that page clearly shows that 19P/Borrelly is the most likely candidate, but also shows that Borrelly was a pretty prolific sky-gazer with several comets to his/her name. While I agree that in a few cases it is appropriate for an ambiguous term to go directly to a single article with a dab hatnote to a disambiguation page, in general I find that those decisions are made upon slim reeds and limited perception of the great variety in the intent of searchers. In absolute terms, I believe that Masursky is correct that searches using either the term "Comet Borrelly" or "Borrelly's Comet" are, in the majority of cases, looking for "19P/Borrelly", but I don't believe that mere preponderance is a good standard primarily because we have little or no data on the intent of searchers and it comes down to a matter of guesswork. --Bejnar (talk) 18:04, 22 November 2008 (UTC)

Discussion

Any additional comments:

The above discussion is preserved as an archive of the proposal. Please do not modify it. Subsequent comments should be made in a new section on this talk page. No further edits should be made to this section.

Dead link

During several automated bot runs the following external link was found to be unavailable. Please check if the link is in fact down and fix or remove it in that case!

• http://www.space.com/scienceastronomy/solarsystem/borrelly_dark_011129.html
  • In Halley's Comet on 2011-03-22 19:37:03, 404 Not Found
  • In Halley's Comet on 2011-04-16 04:07:46, 404 Not Found
  • In Halley's Comet on 2011-04-17 19:17:21, 404 Not Found
  • In 19P/Borrelly on 2011-05-25 06:46:53, 404 Not Found
  • In 19P/Borrelly on 2011-06-25 12:58:21, 404 Not Found

--JeffGBot (talk) 12:58, 25 June 2011 (UTC)

Planetarium 2042.12.05

(moved from main article page 4 August 2019) see comet “p19/borrelly” in this simulator app, it’s crash on earth in 2042.12.05 is it a real ? https://apps.apple.com/us/app/solar-walk-lite-planetarium-3d/id1176819919 -- 46.49.91.133

Most planetarium software is unreliable because they normally only handle the Solar System as a Two-body problem, ie one object always going around the Sun with no other perturbations accounted for. Simulating the Solar System accurately is a n-body problem requiring numerical integration to solve. Looking at the JPL SBDB "close-approach data" at https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=19P&view=OPC we can see that 19P will NOT be near Earth in 2042. On 2042-Dec-05 the comet will be 1.1 AU from Earth, making it further from Earth than the Sun is. Even the Earth Minimum orbit intersection distance (E-MOID) is 0.37 AU (55 million km). -- Kheider (talk) 19:56, 4 August 2019 (UTC)