Talk:ʻOumuamua/Archive 5

Interstellar object on Earth?
NOTE: Some of the following below is also copied in "Talk:Interstellar object" - for consideration/discussion - Drbogdan (talk) 12:47, 12 April 2022 (UTC)

FWIW - seems an interstellar object may currently be on Earth - recent news    may be of possible interest to some I would think - iac - Stay Safe and Healthy !! - Drbogdan (talk) 20:33, 9 April 2022 (UTC)


 * Given this recent news, does the first sentence of this article,
 * need to be changed, since Oumuamua was detected in 2017 and the referenced meteorite struck the Earth in 2014?
 * Amolvaidya06 (talk) 21:19, 11 April 2022 (UTC)
 * I went ahead and made the edit. Amolvaidya06 (talk) 21:28, 11 April 2022 (UTC)
 * I went ahead and made the edit. Amolvaidya06 (talk) 21:28, 11 April 2022 (UTC)

BRIEF Followup - Updated the lede of the 'Oumuamua article as follows => *Oumuamua is a known interstellar object detected passing through the Solar System.(+ref) It is possibly the second interstellar object known; the first being a purported interstellar meteor that impacted Earth in 2014.(+refs)" - seems better - comments welcome of course - in any case - Stay Safe and Healthy !! - Drbogdan (talk) 22:35, 11 April 2022 (UTC)

FURTHER Updates (also for consideration/discussion) - originally in the "Interstellar object" article as follows:

'''The first interstellar object which was discovered traveling through our Solar System was 1I/ʻOumuamua in 2017. The second was 2I/Borisov in 2019. They both possess significant hyperbolic excess velocity, indicating they did not originate in the Solar System. Earlier, in 2014, an interstellar object was purported to have impacted Earth, based on its estimated initial high velocity.'''
 * Interstellar object - LEDE

'''In 2019, a preprint was published suggesting that a 0.45 meter meteor of interstellar origin, did burn up in the Earth's atmosphere on January 8, 2014. It had a heliocentric speed of 60 km/s and an asymptotic speed of 42.1±5.5 km/s, and it exploded at 17:05:34 UTC near Papua New Guinea at an altitude of 18.7 km. After declassifying the data in April 2022, the U.S. Space Command confirmed the detection through its planetary protection sensors.'''
 * Interstellar object

In April 2022, astronomers reported the possibility that a meteor that impacted Earth in 2014 may have been an interstellar object due to its estimated high initial velocity.
 * Interstellar object

hope the above helps in some way - in any case - Stay Safe and Healthy !! - Drbogdan (talk) 12:30, 12 April 2022 (UTC)

Science News at ‘Oumuamua gets a new origin story
Here is an article about ‘Oumuamua gets a new origin story from Science News. Rjluna2 (talk) 20:46, 25 June 2022 (UTC)
 * There's no such story on the site. Perhaps it was taken down - the latest post is: https://www.sciencenews.org/article/oumuamua-interstellar-object-origin-pluto-exoplanet-not-aliens  — Preceding unsigned comment added by 50.111.29.1 (talk) 14:16, 31 August 2022 (UTC)

Review article
The Interstellar Interlopers a review article discussing Oumuamua and 2I/Borisov. Agmartin (talk) 16:51, 25 September 2022 (UTC)

'alien spacecraft'
While not stressed, the article still has too much emphasis on this - there are probably less than 5 astrophysicists who give even the slightest credence to this guff. I recommend reducing it to the briefest of mentions and removing it from the lede. 50.111.29.1 (talk) 14:26, 31 August 2022 (UTC) :I went to review it and there was a very clear, concise description that a small number of astrophysicists may think its is extra terrestrial. Which I think is fair. MaximusEditor (talk) 19:50, 19 October 2022 (UTC)

More on hydrogen gas theory
Scientists think they know why interstellar object 'Oumuamua moved so strangely -- Beland (talk) 21:27, 22 March 2023 (UTC)

Closest Approach to Earth and Golden Ratio
The closest approach distance in AU is currently listed as 0.1618 AU (24,200,000 km; 15,040,000 mi). The source of that is a web pages which list the closest approach as "24,000,000 km" or "15,000,000 mi" https://www.popularmechanics.com/space/news/a28958/first-interstellar-object-gets-a-name/ and those figures would result in 0.1604 AU or 0.1613 AU, not 0.1618 AU. The extra 200,000 km or 40,000 mi in those figures has been chosen by someone to make the closest approach match the Golden ratio to 4 significant figures. — Preceding unsigned comment added by Lamontcg (talk • contribs) 17:19, 2 September 2023 (UTC)

Ah, I see that the linked JPL database has the closest approach to Earth at the bottom listed as "0.16175 AU" which I've updated this page to have that value, since that is authoritative and the significant figures are supported by the uncertainty that the JPL data indicates. Lamontcg (talk) 17:30, 2 September 2023 (UTC)


 * JPL listed the closest approach as 0.16174 to 0.16177 au. -- Kheider (talk) 20:02, 2 September 2023 (UTC)

New study on why Hydrogen Iceberg doesn't work
https://avi-loeb.medium.com/oumuamua-was-not-a-hydrogen-water-iceberg-1dd2f7a6107f Looks like the hydrogen theory is bust, so to my knowledge it looks like pretty much every proposed explanation for what this thing was has been shot down. —  Insertcleverphrasehere(or here) (or here) (or here)  19:39, 21 June 2023 (UTC)


 * Loeb has a conflict of interest because his funding for his pet project requires everything being aliens. He is becoming the Rudy Giuliani of astronomy. -- Kheider (talk) 12:58, 3 September 2023 (UTC)
 * That's putting it VERY politely, Kheider :) — Preceding unsigned comment added by 92.6.182.106 (talk) 14:14, 3 September 2023 (UTC)