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: Darryl Seligman, Gregory Laughlin, Konstantin Batygin (Submitted on 12 Mar 2019) | : Darryl Seligman, Gregory Laughlin, Konstantin Batygin (Submitted on 12 Mar 2019) | ||
== Unecessary ambiguity? == | |||
== New study on why Hydrogen Iceberg doesn't work == | |||
In the section on composition, the sentence "The authors calculated that a month after perihelion, that ʻOumuamua had lost 92% of the mass it had upon entering the Solar System" would appear to apply to an object that consisted largely of ice, similar to a comet. | |||
So the uncommented transition to the first sentence of the next paragraph "Light curve observations suggest the object may be composed of dense metal-rich rock that has been reddened by millions of years of exposure to cosmic rays" creates an unnecessary non-sequitur since a "dense metal-rich rock" object would hardly lose 92% of its mass by passing the Sun at a distance of 37,000,000 k. | |||
I don't have the expertise to fix this authoritatively. ] (]) 23:23, 25 August 2024 (UTC) | |||
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. — '''''<small>]<sup>(])<small><sub>(]<sup>(])</sup></sub></small></sup></small>''''' 19:39, 21 June 2023 (UTC) | |||
:Try now :) ]] 08:04, 26 August 2024 (UTC) | |||
:Loeb has a conflict of interest because his funding for his pet project requires everything being aliens. -- ] (]) 12:58, 3 September 2023 (UTC) | |||
::Thanks for clearing that up! ] (]) ] (]) 21:35, 26 August 2024 (UTC) | |||
== Using narrow gaps instead of commas as thousand separator == | |||
== Closest Approach to Earth and Golden Ratio == | |||
According to the Manual of Style, you may use as a thousand separator either a comma or a narrow gap (by using the template gaps). | |||
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. <!-- Template:Unsigned --><small class="autosigned">— Preceding ] comment added by ] (] • ]) 17:19, 2 September 2023 (UTC)</small> <!--Autosigned by SineBot--> | |||
Nonetheless, the Manual of Style also states that grouping of digits using narrow gaps is “especially recommended for articles related to science, technology, engineering or mathematics”. This is due to the fact that it's the normalized way in the international standards (] and ]), and also it's the recommended style by ] and ]. | |||
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. ] (]) 17:30, 2 September 2023 (UTC) | |||
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Proposal: change the article to format numbers like this "{{gaps|1|000|000}}" instead of "1,000,000". ] (]) 09:59, 9 November 2024 (UTC) |
Latest revision as of 20:55, 9 November 2024
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New paper
- On the Anomalous Acceleration of 1I/2017 U1 `Oumuamua Darryl Seligman, Gregory Laughlin, Konstantin Batygin (Submitted on 12 Mar 2019)
Unecessary ambiguity?
In the section on composition, the sentence "The authors calculated that a month after perihelion, that ʻOumuamua had lost 92% of the mass it had upon entering the Solar System" would appear to apply to an object that consisted largely of ice, similar to a comet.
So the uncommented transition to the first sentence of the next paragraph "Light curve observations suggest the object may be composed of dense metal-rich rock that has been reddened by millions of years of exposure to cosmic rays" creates an unnecessary non-sequitur since a "dense metal-rich rock" object would hardly lose 92% of its mass by passing the Sun at a distance of 37,000,000 k.
I don't have the expertise to fix this authoritatively. Pascalulu88 (talk) 23:23, 25 August 2024 (UTC)
- Try now :) cyclopia 08:04, 26 August 2024 (UTC)
- Thanks for clearing that up! Pascalulu88 (talk) Pascalulu88 (talk) 21:35, 26 August 2024 (UTC)
Using narrow gaps instead of commas as thousand separator
According to the Manual of Style, you may use as a thousand separator either a comma or a narrow gap (by using the template gaps).
Nonetheless, the Manual of Style also states that grouping of digits using narrow gaps is “especially recommended for articles related to science, technology, engineering or mathematics”. This is due to the fact that it's the normalized way in the international standards (ISO/IEC 80000 and International System of Units), and also it's the recommended style by ANSI and NIST.
Proposal: change the article to format numbers like this "1000000" instead of "1,000,000". RGLago (talk) 09:59, 9 November 2024 (UTC)
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