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Comet Atlas

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Comet Atlas

Old 8th Apr 2020, 23:09
  #21 (permalink)  
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I am totally at a loss. I have the clearest memory of seeing it from the front of a DAK, but I'd finished with that company well before September. Most odd.
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Old 9th Apr 2020, 00:04
  #22 (permalink)  
 
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Be lost no more, there were a few that fit.

http://articles.adsabs.harvard.edu//...01040.000.html

and

http://articles.adsabs.harvard.edu//...01041.000.html
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Old 18th Apr 2020, 17:57
  #23 (permalink)  
 
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Where is it now ?
In quarantine ?
David
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Old 18th Apr 2020, 18:31
  #24 (permalink)  
 
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Link to The Sky Live showing position;
https://theskylive.com/where-is-c2019y4
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Old 18th Apr 2020, 18:55
  #25 (permalink)  
 
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Originally Posted by goofer3 View Post
Link to The Sky Live showing position;
https://theskylive.com/where-is-c2019y4
Many many thanks
David
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Old 19th Apr 2020, 00:01
  #26 (permalink)  
 
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Originally Posted by The AvgasDinosaur View Post
Where is it now ?
In quarantine ?
David
If you are asking about Comet Atlas I take it you might not be aware that it's a busted flush (as some who were looking at it's behaviour predicted basically it blew apart) - it's currently down at around magnitude +9 which is far too dim to be seen with the naked eye, and in fact would be a challenge in binoculars...

The better news is another potentially bright comet has been discovered in the last few days, Comet Swan..

https://www.space.com/comet-swan-arr...-crumbles.html

https://theskylive.com/c2020f8-info

The problem with a lot of these "brightest comet" stories is that predicting a comet's brightness is a guessing game in the early days because nobody knows how a comet will behave as it heats up and starts chucking out gas and crud as it approaches the Sun..There is a basic formula that gives a best guess, based in part on the distance of the comet from the Sun and the Earth, plus some other variables but until the thing starts to warm up and you can get some data points to plot you don't know whether the observed light curve is going to be a good fit with the formula or if you need to change some of the variables to find another curve..and if the whole thing literally falls apart then it's anybodies guess...

http://adsabs.harvard.edu/full/1990acm..proc..327H

Last edited by wiggy; 19th Apr 2020 at 00:41.
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Old 19th Apr 2020, 01:13
  #27 (permalink)  
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Comets can be notoriously erotic" - for a certain kind of people
Aaaaaaaaaaaaaaaargh, I forgot to mention that when I read that, I just shrugged.
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Old 29th Apr 2020, 07:11
  #28 (permalink)  
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https://phys.org/news/2020-04-hubble...met-atlas.html

Hubble captures breakup of comet ATLAS



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Old 7th May 2020, 13:32
  #29 (permalink)  
 
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Meanwhile Comet Swan has suddenly brightened...usual caveats apply about comet brightness predictions and currently (early May) V tricky to see from Europe because it is only rising maybe an hour before sunrise..


FIRST TASTE OF SWAN: MORNING APPEARANCE

Southern Hemisphere observers have the best seats for viewing the comet in early May but that will change as SWAN moves rapidly northward. This week, observers in the southern U.S. should get their first glimpse of the comet very low in the eastern sky during morning twilight as it speeds from Cetus into Pisces. The comet's height above the eastern horizon will vary depending on latitude, with more northerly latitudes favored from about May 20th through early June. Peak magnitude of 2.8 is expected around May 21st.

While northern viewers will get a modest altitude bump, twilight also begins earlier 2 to 2 hours before sunrise compared to 1 hours for the southern U.S. so any elevation gains may well be offset by skyglow.
https://skyandtelescope.org/astronom...splendid-show/

Last edited by wiggy; 7th May 2020 at 13:48.
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