Anyways the JPL model actually relates to CO2 outgassing and not luminosity. But it's funny that his own idea of using a steeper 1/r^{7.5} is shot dead by his own source. And it's literally possible to have a "short segment" that's "steeper" than the average. That's the basics in Calculus

huh i only have a 4.5 inch 💀

Hi question, do you need a big telescope to do this, or just some exposure time?

What's, your setup?

Amusingly I believe the initial title of Loeb's article was something along the lines of

"breaking-news-newly-discovered-sideways-lines-might-trace-the-release-of-smaller-objects"

Not really a comet expert, but what if the travel of 3I/ATLAS through the Interstellar medium could have skewed the ratios of isotopes via galactic cosmic ray processing, so it might not be indicative of its home system (Since a stellar astrosphere can filter GCRs) arxiv.org/pdf/2510.26308

BTW I asked this question, because Loeb's calculations that 3I atlas needed to lose a sixth of its mass near perihelion to match non-grav acceleration observed. Also assumed the outflow speed was only .4km/s but data from 67p/c-g indicated that outflow speeds can reach .7-1 km/s if near the sun.

It seems Avi Loeb is convinced the Optical anti tail, are the same ''Real anti tail''. Someone better correct him as soon as possible (preferably on live tv or something)

🔭☄️I should note since early observations of 3I/Atlas were performed when it was in a low phase angle relative to the earth, the ''real'' anti-tail would appear Infront of the coma and nucleus while the tail would be behind it. Thus, the real anti-tail would seem more prominent over the actual tails

🔭☄️ It's possible 3I/Atlas still has a ''real'' anti tail whist currently having the optical anti tail effect. But we shouldn't confuse one with the other. (Feel free to correct me if I'm wrong on anything, I'm trying my best! :3 ❤️).

🔭☄️ Now given 3I/ATLAS' current trajectory in Nov, we should be seeing an Optical anti tail too, I've drawn over this image from the Sky live website to show the Optical anti tail effect on 3I/ATLAS caused by the position of earth (thus viewer) relative to 3I/ATLAS moving away from the sun.

The issue is that people like Avi Loeb Believe the post-perihelion anti tail of 3I/atlas is the same pre-perihelion anti tail. But the former is an Optical anti tail, not a real one. So IMO I propose we call the "real anti tail" a "Sunwards coma" instead to minimize confusion.

So a Real anti tail is more like a sunward coma, not as long as a tail. Right image shows a temporary sunward coma of the B-B comet currently pre-perihelion (at 20+ au), likely caused by anisotropic heating. To the right we see a different comet C/2023 A3 at post perihelion with an Optical anti tail

Anyways, I also thought 1 km/s outflow velocities might be possible for 3I/ATLAS due seemingly possessing large amounts of ''dry ice'' which sublimates more violently than water ice

Yes, I've seen in papers that say getting accurate mass loss rates or outflow velocities over long periods of time during a comet's travel is very difficult (without in-situ analysis). So, I heavily doubt calculations that Avi Loeb gives, they are too speculative and require massive assumptions.

Question, do you think higher than 0.5km/s as an outflow speed for 3I/ATLAS near perihelion is plausible? Maybe up to 1 km/s? I've heard that outflow speed measurements of 67p/C-g by Rosetta show outflow speeds around 700 m/s when 67p/C-g is near perihelion.

I've noticed he used the "Ram-pressure" equation for this claim which is used for Galaxies (possibly because he is more trained in Astrophysics), but he's supposed to be analyzing a comet, there is an order of magnitude difference between a comet and a Galaxy.

He's giving himself head 💀 💀 💀 💀
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(All jokes aside, this is wholesome)

But I'm just spitballin' here. Maybe I'm not onto something, but on something 💊 💉
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blogs.esa.int/rosetta/2016...