Jump to content

sgl_imaging_challenge_2021_annual.thumb.jpg.3fc34f695a81b16210333189a3162ac7.jpg

Comet Leonard May Become Naked-Eye Visible in December


Recommended Posts

Posted (edited)

Comet C/2021 A1 (Leonard) is currently at magnitude +17.3. It might reach naked-eye visibility in December, but that is currently uncertain.

The comet will pass only 0.23 AU from Earth on 2021 DEC 12. It was discovered this year in early January by G. J. Leonard at the Mount Lemmon Observatory.

Photos and descriptions of the comet would be welcome additions to my similar thread in the forum for Observing-Widefield, Special Events & Comets.

Leonard.JPG.9967739bd142769213fc136ea9247d67.JPG

 

Edited by CentaurZ
  • Like 8
  • Thanks 1
Link to comment
Share on other sites

  • 1 month later...

It might reach naked eye visibility. It's still proportionally brighter than C/2020 F3, which by the way, was also insane. Even though it is still at magnitude 17, it has potential 

Link to comment
Share on other sites

On 19/07/2021 at 11:52, HaleBopp2007 said:

It might reach naked eye visibility. It's still proportionally brighter than C/2020 F3, which by the way, was also insane. Even though it is still at magnitude 17, it has potential 

Unfortunately this is only above the horizon in the UK during daylight hours

  • Sad 1
Link to comment
Share on other sites

41 minutes ago, HaleBopp2007 said:

It will be perfectly visible in early December at sunrise from the entire northern hemisphere, including the UK

Yes, my mistake! I tracked in through on Starry Night, but I was skipping days - looks like  managed to skip the early part of December completely. Assuming it is bright enough, visible in the early hours from end of November through to around 10th December

  • Like 1
Link to comment
Share on other sites

  • 3 weeks later...

Two new reports that could be game changing! One of mag 16.2 in late July, and a mag 15.3 report a couple of days ago! 

PD: Light curve made by Gideon Van Buitenen 

descarga (1).png

Link to comment
Share on other sites

I don't really know if A1 will be as good as F3 though... That thing was like a pool of caramel under dark skies! Let's wait and see! (no new observations yet) 

Link to comment
Share on other sites

  • 4 weeks later...

There's been some recent observations... In the facebook 'Comet Watch' group, Michael Jager is estimating the comet to be mag. 13.5! It has a 4 arcmin long fan tail with a bright and condensed coma:

Also, this image is from a couple of days before, as haze worsened the most recent one (the mag 13.5 report) 

 

 

241656573_1218698941980269_5615554714296127553_n.jpg

Edited by HaleBopp2007
  • Like 1
Link to comment
Share on other sites

It's definitely a morning object for the N hemisphere. Here is what Stellarium makes of my circumstances. (for some reason the months are marked in Roman Numerals). Marked at 5 day intervals because otherwise the early part of the track is too cluttered.

image.thumb.png.723efc66a19c45d07022552b807dfecd.png

Link to comment
Share on other sites

I had a promising sky last night once the clouds dissapeared. But then the dew point became a problem. the sky was particularly milky and my view to the low NE sky was directly through the glow of industrial LED flood lights! Elevation was between 10 and 13 deg.

The gradient on the subs was, I thought so extreme that I'd wasted my time. Anyway, I got 7 x 180 sec with my 10" Newt and ASI071 Camera + Optolong L-Pro filter. Binned 3x3. Only calibration is flats.

Stacked, stretched, background equalised and comet annotation all done with ASTAP. 

I know it don't look pretty but I'm astounded by just what ASTAP pulled out of this data.! :)

46985070_2021A1LEONARD2021-09-207x180LEQMODHEQ56ZWOASI071MCPro_stackedequalised.thumb.jpg.a3f20ed7620a63eab83e7d44b7f2c4d8.jpg

  • Like 9
Link to comment
Share on other sites

  • 4 weeks later...
On 20/09/2021 at 21:18, Paul M said:

I had a promising sky last night once the clouds dissapeared. But then the dew point became a problem. the sky was particularly milky and my view to the low NE sky was directly through the glow of industrial LED flood lights! Elevation was between 10 and 13 deg.

The gradient on the subs was, I thought so extreme that I'd wasted my time. Anyway, I got 7 x 180 sec with my 10" Newt and ASI071 Camera + Optolong L-Pro filter. Binned 3x3. Only calibration is flats.

Stacked, stretched, background equalised and comet annotation all done with ASTAP. 

I know it don't look pretty but I'm astounded by just what ASTAP pulled out of this data.! :)

46985070_2021A1LEONARD2021-09-207x180LEQMODHEQ56ZWOASI071MCPro_stackedequalised.thumb.jpg.a3f20ed7620a63eab83e7d44b7f2c4d8.jpg

That's a good one! Now the first visual reports are coming, and the comet seems to have reached the 12th magnitude... If this trend continues we could get a decent naked eye spectacle for some days

  • Like 3
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.