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Astronomy Picture of the Day - Comet Leonard Before Star Cluster M3
APOD.NASA.gov ^ | 12 Dec, 2021 | Image Credit & Copyright: Dan Bartlett

Posted on 12/12/2021 2:21:13 PM PST by MtnClimber

Explanation: Comet Leonard is now visible to the unaided eye -- but just barely. Passing nearest to the Earth today, the comet is best seen this week soon after sunset, toward the west, low on the horizon. Currently best visible in the north, by late December the comet will best be seen from south of Earth's equator. The featured image of Comet C/2021 A1 (Leonard) was taken a week ago from California, USA. The deep exposure shows in great detail the comet's green gas coma and developing dust tail. The comet -- across our inner Solar System and only light-minutes away -- was captured passing nearly in front of globular star cluster M3. In contrast, M3 is about 35,000 light-years away. In a week, Comet Leonard will pass unusually close to Venus, but will continue on and be at its closest to the Sun in early January.


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; c2021a1; canesvenatici; charlesmessier; cometleonard; greencomet; huntingdogs; m3; messierobject; nasa; ophiuschus; science; serpenscauda; starclusterm3
To be added or removed from the Astronomy Picture of the Day ping list please send me a request via "Private Reply" (Mail).

For more detail go to the link and click on the image for a high definition image. You can then move the magnifying glass cursor then click to zoom in and click again to zoom out. When zoomed in you can scan by moving the side bars on the bottom and right side of the image.

1 posted on 12/12/2021 2:21:13 PM PST by MtnClimber
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To: MtnClimber

2 posted on 12/12/2021 2:21:30 PM PST by MtnClimber (For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
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To: 21stCenturion; 21twelve; 4everontheRight; abb; AFB-XYZ; America_Right; AZ .44 MAG; BBB333; ...
Pinging the APOD list.

🪐 🌟 🌌 🍔

This one is a great photo! Really great! There are also a couple of cats interested in the details.
3 posted on 12/12/2021 2:23:37 PM PST by MtnClimber (For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
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To: MtnClimber

I just went out and tried to see it, no dice. Too many trees in the way. But Jupiter and Venus are incredibly bright!


4 posted on 12/12/2021 2:33:08 PM PST by rlmorel (If the Biden Administration was only stupid or incompetent, some actions would benefit the USA.)
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To: rlmorel

The writer left out the constellation, a real no-no in good astronomy writing.


5 posted on 12/12/2021 3:35:43 PM PST by MadMax, the Grinning Reaper (Figures )
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To: MadMax, the Grinning Reaper

LOL, that was what I was looking for, and when I couldn’t find it, I assumed they included it in some kind of way that wasn’t obvious to me!


6 posted on 12/12/2021 3:39:57 PM PST by rlmorel (If the Biden Administration was only stupid or incompetent, some actions would benefit the USA.)
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To: rlmorel

Twinkle,twinkle little star, where the hell are you?


7 posted on 12/12/2021 4:00:21 PM PST by MadMax, the Grinning Reaper (Figures )
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To: MtnClimber

Wow, if you could see it like that with the naked eye
that would be something!


8 posted on 12/12/2021 4:02:15 PM PST by tet68 ( " We would not die in that man's company, that fears his fellowship to die with us...." Henry V.)
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To: MtnClimber

Clicking on “Tails” you get a beautiful picture of Comet Neowise, red, blue, and white! Excellent!


9 posted on 12/12/2021 4:42:31 PM PST by Pete from Shawnee Mission ( )
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To: Pete from Shawnee Mission

Yes, that was a great photo at the link!


10 posted on 12/12/2021 5:02:37 PM PST by MtnClimber (For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
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To: MadMax, the Grinning Reaper

At the time of the photo, it was in Canes Venatici, the Hunting Dogs. Since then it has passed through several constellations. As I write it is in Ophiuschus, soon it will be in Serpens Cauda.

Best to check a finder chart on a night by night basis. Comets don’t stay put, that’s how Charles Messier used to tell if they were comets or something that belonged on his list of things that aren’t comets: If he looked back the next night and it wasn’t someplace else, it wasn’t a comet.

https://skyandtelescope.org/observing/celestial-objects-to-watch/comets/see-comet-leonard-at-its-best/


11 posted on 12/12/2021 5:30:58 PM PST by saundby
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To: saundby

12 posted on 12/12/2021 5:39:41 PM PST by MacNaughton
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To: MtnClimber

Pawsome! And some interesting information about why comets appear green.


13 posted on 12/13/2021 7:15:11 AM PST by gloryblaze
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