Timeline for Can the paper narrowing Solar System's barycentre to within 100m help find Planet Nine?
Current License: CC BY-SA 4.0
16 events
| when toggle format | what | by | license | comment | |
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| S Jul 16, 2020 at 12:38 | history | bounty ended | ksousa | ||
| S Jul 16, 2020 at 12:38 | history | notice removed | ksousa | ||
| Jul 16, 2020 at 12:37 | vote | accept | ksousa | ||
| Jul 14, 2020 at 8:22 | answer | added | William Miller | timeline score: 20 | |
| S Jul 14, 2020 at 0:11 | history | bounty started | ksousa | ||
| S Jul 14, 2020 at 0:11 | history | notice added | ksousa | Draw attention | |
| Jul 13, 2020 at 21:03 | comment | added | Jack R. Woods | @PM2Ring the estimated total mass of the Kuiper belt per this Wikipedia source arXiv:1811.05191. doi:10.1134/S1063773718090050. is only about 2% of the mass of the Earth. This was based on gravitational influence on the planets and spacecraft. That being said, I would think that if Planet 9 exists, it's effects would have been seen in this study. | |
| Jul 12, 2020 at 20:09 | comment | added | PM 2Ring | @ksousa Yes, the stuff that's randomly distributed should mostly cancel out, but a few non-random lumps of mass could counter-balance Planet 9. OTOH, it's unlikely that there's a lot of mass out there, regardless of how it's distributed. Hopefully, someone who knows more about this stuff will write an actual answer. ;) | |
| Jul 12, 2020 at 19:22 | comment | added | ksousa | @PM2Ring, wouldn't the smaller masses like comets be scattered at random, and so cancel each other out, on average? That would make easier to filter the signal of large mass objects. | |
| Jul 12, 2020 at 15:28 | comment | added | PM 2Ring | FWIW, a rough calculation of $rm/M_\odot$ for Planet 9, using $r=400$ AU & $m=5M_\oplus=15×10^{-6}M_\odot$, gives around 900,000 km. That's a pretty large contribution to the barycentre. But of course Planet Nine (if it exists) isn't the only mass in the outer Solar System. | |
| Jul 12, 2020 at 12:05 | comment | added | PM 2Ring | Here's a recent press release about an alternative explanation for the oddities of the outer Solar System that doesn't require Planet Nine: colorado.edu/today/2020/07/07/outer-solar-system | |
| Jul 12, 2020 at 9:00 | history | tweeted | twitter.com/StackAstronomy/status/1282238288594636801 | ||
| Jul 12, 2020 at 1:33 | history | edited | ksousa |
Located the tag regarding planet-nine.
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| Jul 12, 2020 at 1:02 | history | edited | ksousa | CC BY-SA 4.0 |
added 17 characters in body
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| Jul 12, 2020 at 0:15 | review | First posts | |||
| Jul 13, 2020 at 7:55 | |||||
| Jul 12, 2020 at 0:06 | history | asked | ksousa | CC BY-SA 4.0 |