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Comet C/2023 A3 Still Visible to Naked Eye
Posted on 10/15/24 at 9:09 am
Posted on 10/15/24 at 9:09 am
Just after dusk this comet is visible low on the western horizon north of Venus. I was able to observe it with 7x35 binoculars. My wife (no pics!) has somewhat better eyesight than me was able to see it with her unaided eye.
From Wikipedia:
I made this image yesterday evening from my backyard with my iPhone (didn't have the energy to set up any of my astrophotography gear):
The "anti-tail" on this comet was discussed below. Here is today's Astronomy Picture of the Day showing the comet, its tail, and the anti-tail:
Here is the caption from APOD:
Comet Tsuchinshan-ATLAS over California
Credit & Copyright: Brian Fulda
Explanation: The tails of Comet Tsuchinshan-ATLAS were a sight to behold. Pictured, C/2023 A3 (Tsuchinshan–ATLAS) was captured near peak impressiveness last week over the Eastern Sierra Mountains in California, USA. The comet not only showed a bright tail, but a distinct anti-tail pointing in nearly the opposite direction. The globular star cluster M5 can be seen on the right, far in the distance. As it approached, it was unclear if this crumbling iceberg would disintegrate completely as it warmed in the bright sunlight. In reality, the comet survived to become brighter than any star in the night (magnitude -4.9), but unfortunately was then so nearly in front of the Sun that it was hard for many casual observers to locate. Whether Comet Tsuchinshan-Atlas becomes known as the Great Comet of 2024 now depends, in part, on how impressive incoming comet C/2024 S1 (ATLAS) becomes over the next two weeks.
From Wikipedia:
quote:
The comet passed perihelion at a distance of 0.39 AU (58 million km; 36 million mi) on 27 September 2024,[1][3] when it became visible to the naked eye.[5][6] Tsuchinshan-Atlas peaked its brightest magnitude shortly after passing the Sun at 9 October, with a magnitude of -4.9 per reported observations at the Comet Observation Database (COBS).[5]
I made this image yesterday evening from my backyard with my iPhone (didn't have the energy to set up any of my astrophotography gear):

The "anti-tail" on this comet was discussed below. Here is today's Astronomy Picture of the Day showing the comet, its tail, and the anti-tail:

Here is the caption from APOD:
Comet Tsuchinshan-ATLAS over California
Credit & Copyright: Brian Fulda
Explanation: The tails of Comet Tsuchinshan-ATLAS were a sight to behold. Pictured, C/2023 A3 (Tsuchinshan–ATLAS) was captured near peak impressiveness last week over the Eastern Sierra Mountains in California, USA. The comet not only showed a bright tail, but a distinct anti-tail pointing in nearly the opposite direction. The globular star cluster M5 can be seen on the right, far in the distance. As it approached, it was unclear if this crumbling iceberg would disintegrate completely as it warmed in the bright sunlight. In reality, the comet survived to become brighter than any star in the night (magnitude -4.9), but unfortunately was then so nearly in front of the Sun that it was hard for many casual observers to locate. Whether Comet Tsuchinshan-Atlas becomes known as the Great Comet of 2024 now depends, in part, on how impressive incoming comet C/2024 S1 (ATLAS) becomes over the next two weeks.
This post was edited on 10/21/24 at 2:25 pm
Posted on 10/15/24 at 10:57 am to blueridgeTiger
Good photograph. I'll be looking for that comet tonight.
Posted on 10/15/24 at 11:15 am to BondJamesBond
Here's a chart showing its location over the next few days:


Posted on 10/15/24 at 11:35 am to blueridgeTiger
Blew my mind when I found out comets have two tails and one can point opposite the other.
Posted on 10/15/24 at 11:37 am to blueridgeTiger
Has anyone here actually seen this?
I've read about it and meant to look, but I ain't seen shite so far. I think last Saturday was supposed to be the brightest, according to something I read somewhere.
I've read about it and meant to look, but I ain't seen shite so far. I think last Saturday was supposed to be the brightest, according to something I read somewhere.
Posted on 10/15/24 at 12:14 pm to PowerTool
quote:
Has anyone here actually seen this?
Yea. In the OP I mentioned my wife saw it with her unaided eye and that saw it through 7x35 binos.
Posted on 10/15/24 at 12:17 pm to blueridgeTiger
Cool! What time were you out viewing?
Posted on 10/15/24 at 12:36 pm to PowerTool
I looked the last couple nights and couldn’t see shite
Posted on 10/15/24 at 1:08 pm to blueridgeTiger
Is that a stolen trailer on the side of that house?!?
Posted on 10/15/24 at 2:23 pm to Macfly
quote:
Cool! What time were you out viewing?
Between 7:45 and 8:00 pm.
Posted on 10/15/24 at 3:11 pm to blueridgeTiger

This was last night looked directly west.
Time was 7:00 PM central. I had heard about it and was looking before that time but didn’t start seeing it till around 7.
Posted on 10/15/24 at 3:30 pm to NEALCD
I assume most people know this but a comet's tail does not always follow behind it's direction of travel.


This post was edited on 10/15/24 at 3:32 pm
Posted on 10/15/24 at 3:41 pm to blueridgeTiger
WBRZ - A comet will be visible in capital area skies, won't be seen again for 80,000 years
quote:
• Oct. 15 - Sunset: 6:32 p.m. | Comet Set: 8:50 p.m.
• Oct. 16 - Sunset: 6:31 p.m. | Comet Set: 9:06 p.m.
• Oct. 17 - Sunset: 6:30 p.m. | Comet Set: 9:20 p.m.
• Oct. 18 - Sunset: 6:29 p.m. | Comet Set: 9:32 p.m.
• Oct. 19 - Sunset: 6:28 p.m. | Comet Set: 9:43 p.m.
• Oct. 20 - Sunset: 6:27 p.m. | Comet Set: 9:53 p.m.
• Oct. 21 - Sunset: 6:26 p.m. | Comet Set: 10:01 p.m.
• Oct. 22 - Sunset: 6:25 p.m. | Comet Set: 10:08 p.m.
Posted on 10/15/24 at 6:07 pm to blueridgeTiger
Thanks. No telescope, but I’ve got binoculars and a monocular here at the cabin. I’ll drive out to a clearing tonight if the sky remains clear.
Posted on 10/15/24 at 6:10 pm to blueridgeTiger
quote:
Between 7:45 and 8:00 pm.
Thanks all

Posted on 10/15/24 at 6:10 pm to blueridgeTiger
Gonna be too cloudy for me tonight.
Posted on 10/15/24 at 7:01 pm to blueridgeTiger
How long is it visible in the sky with the naked eye?
Posted on 10/15/24 at 7:02 pm to blueridgeTiger
Do you know what the comet would be called on skymap?
It's a pretty cool app you can move around and see the planets, stars etc. I'm not seeing anything related to the comet.
It's a pretty cool app you can move around and see the planets, stars etc. I'm not seeing anything related to the comet.
Posted on 10/15/24 at 7:04 pm to Yammie250F
My arse is getting tore up by skeeters, I tell you that much.
Posted on 10/15/24 at 7:05 pm to WestSideTiger
quote:
won't be seen again for 80,000 years
Why not just say never to be seen again
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