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Comet C/2021 A1 Leonard

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Comet C/2021 A1 Leonard was created by Fermidox

The comet is just about detectable in this fixed-tripod 18mm shot (25 seconds) at 2.32UT this morning in Canes Venatici (circled). I'd estimate magnitude 7.6. Globular cluster M3 is arrowed and the comet will pass by extremely closely tonight; 5 arcminutes. Doesn't look like we'll see it here though. There's a chance Comet Leonard will become naked-eye visible in mid-December, but there's also talk that its brightening has stalled and may even be a candidate for disintegration. Current Earth distance is 45 million miles and perihelion is on January 3rd. My 39th comet.



Clear skies,
Finbarr.
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Last edit: 1 year 1 week ago by Fermidox.
1 year 1 week ago #110794

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Replied by flt158 on topic Comet C/2021 A1 Leonard

Super shot, Finbarr!
Thank you. 
Is Alpha Canum (Cor Caroli) in your image?
I'm sure it is. 

Very best regards from Aubrey. 
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1 year 1 week ago #110795

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Replied by Fermidox on topic Comet C/2021 A1 Leonard

It's actually not Aubrey; Cor Caroli is in the original shot of course, but that's a cropped version and no stars more than 9 degrees north of the comet are visible. Cor Caroli was 12 degrees to the north last night.

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Finbarr.
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Replied by Until_then-Goodnight! on topic Comet C/2021 A1 Leonard

Hi Finbarr, 

Congratulations on capturing this comet. I always like how you place an object in the foreground to add some perspective to the image. Also, thanks for the notification about it passing close to M3 tonight.

Clear skies, 

Darren. 
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1 year 1 week ago #110797

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Replied by Fermidox on topic Comet C/2021 A1 Leonard

Thanks Darren. There is a chance to catch the conjunction with M3 on Gianluca Masi's page, if we're clouded out here -

www.virtualtelescope.eu/2021/12/01/comet...ervation-3-dec-2021/

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Finbarr.
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1 year 1 week ago #110798

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Replied by Until_then-Goodnight! on topic Comet C/2021 A1 Leonard

Hi Finbarr,

Very many thanks for sharing that link - it's brilliant!

I missed the live stream - a little too late for me : (.

Still planning to to view the comet over the coming weeks.

Clear skies,

Darren.
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1 year 6 days ago #110800

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Replied by Fermidox on topic Comet C/2021 A1 Leonard

I didn't see it myself Darren, maybe he will put the recording online at some point.

You don't have too much longer to catch it as it will disappear into southern skies around Dec 12th. And it's on a hyperbolic orbit so will never return 

Clear skies,
Finbarr.
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1 year 6 days ago #110802

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Replied by JohnONeill on topic Comet C/2021 A1 Leonard

Hi,
I am glad you got to see Leonard C/2021 A1.

I estimated the magnitude as only mag 7.9 this morning (Dec 3rd 2021). Maybe it was the moderate transparency. It was nice near M3.

Anyway you can see my images at:
www.variablestarnights.net/

John
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1 year 5 days ago #110803

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Replied by Fermidox on topic Comet C/2021 A1 Leonard

Those are lovely shots John. The comet looks quite healthy there but time will tell. Generally the estimates are suggesting it has now reached 7th magnitude but still quite a wide variation.

Finbarr. 
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Replied by Fermidox on topic Comet C/2021 A1 Leonard

Another shot here, from this morning Dec 5th at 0332UT; 60 seconds with a 140mm DSLR lens. I'd estimate mag 6 with a 0.7 degree tail and at this rate it's definitely still on course to be a naked eye object later in the week.



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1 year 4 days ago #110805

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Replied by Until_then-Goodnight! on topic Comet C/2021 A1 Leonard

Hi Finbarr and John, 

Those are super images... Mag 6...it's getting there! 

Thanks for sharing and clear skies, 
Darren. 

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1 year 4 days ago #110806

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Replied by Fermidox on topic Comet C/2021 A1 Leonard

There was a report today from Russia that the comet had outbursted to as bright as mag 2.6. I had a clear window this evening and, although I could clearly see mag 2.9 Albaldah (pi Sgr), I did not see the comet 6 degrees to the W of that star. We really only have 3 or 4 more nights to catch it from these latitudes; tomorrow it will be less than a degree from Albaldah, and on Saturday 5.5 degrees SE of Venus.

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Finbarr.
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Replied by Fermidox on topic Comet C/2021 A1 Leonard

Being reported that the comet may now be as bright as mag 2.5 - that's a significant outburst as it's now 15 million miles further from the Earth than it was 8 days ago. I doubt anyone will see it from this country again though unless they have a perfectly clear SW horizon... or unless it keeps brightening :D

Finbarr.
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11 months 2 weeks ago #110854

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