2003 Ub 313: The Incredible Shrinking Planet?, No bigger than Pluto? |
2003 Ub 313: The Incredible Shrinking Planet?, No bigger than Pluto? |
| Guest_BruceMoomaw_* |
 Jan 31 2006, 09:20 PM
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Apr 12 2006, 05:15 AM
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 Junior Member  Group: Members Posts: 37 Joined: 21-December 05 Member No.: 614 |
QUOTE The problem is that it's easy to say that now with just one solar system and nine (or eight or ten, depending on who's counting) planets. What happens when we start finding solar systems where the equivalent of Mercury is the size of Europa or Triton? Is the response of astronomers to be: Sorry, you have to be "this big" to qualify as a planet. For some reason the exoplanets in the PSR 1257+12 system never get a lot of attention, yet they are as small or even smaller as Pluto. Did we discover small planets or are they the first asteroids/minor planets we found around another star? |
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Apr 12 2006, 05:45 AM
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Member Group: Members Posts: 249 Joined: 11-June 05 From: Finland (62°14′N 25°44′E) Member No.: 408 |
PSR 1257+12 B and C are a few times more massive than the Earth, A is about the size of the Moon. There's probably yet another body, but not even the discoverers call it a planet as it is has only one fifth the mass of Pluto.
-------------------- The universe is not only stranger than we imagine, it is stranger than we can imagine.
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Apr 12 2006, 06:05 AM
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Member Group: Members Posts: 307 Joined: 16-March 05 Member No.: 198 |
QUOTE (Jyril @ Apr 12 2006, 05:45 AM)  PSR 1257+12 B and C are a few times more massive than the Earth, A is about the size of the Moon. There's probably yet another body, but not even the discoverers call it a planet as it is has only one fifth the mass of Pluto. Interesting. Yet again it seems to be only the term "planet" which attracts this debate. Consider neutron stars. They are not even as big as many asteroids or Kuiper belt objects, much less Pluto, yet no astronomer seems to be suggesting that their diminutive size means we should stop calling them "neutron stars" and dub them (say) "neutron objects" or "neutron dwarfs" instead. ====== Stephen |
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BruceMoomaw 2003 Ub 313: The Incredible Shrinking Planet? Jan 31 2006, 09:20 PM
elakdawalla QUOTE (BruceMoomaw @ Jan 31 2006, 01:20 PM)(T... Jan 31 2006, 09:36 PM
SFJCody QUOTE (elakdawalla @ Jan 31 2006, 09:36 PM)Ac... Feb 1 2006, 12:19 AM
Rob Pinnegar QUOTE (SFJCody @ Jan 31 2006, 06:19 PM)There... Feb 1 2006, 02:12 AM AlexBlackwell QUOTE (elakdawalla @ Jan 31 2006, 09:36 PM)Si... Feb 1 2006, 05:48 PM JRehling Incidentally, don't forget that Pluto "sh... Feb 1 2006, 07:17 PM TritonAntares QUOTE (JRehling @ Feb 1 2006, 09:17 PM)Incide... Feb 2 2006, 12:27 PM Rob Pinnegar QUOTE (TritonAntares @ Feb 2 2006, 06:27 AM)A... Feb 3 2006, 07:18 PM ljk4-1 For what this is worth, Sky & Telescope is now... Feb 10 2006, 04:52 PM angel1801 QUOTE (TritonAntares @ Feb 2 2006, 09:57 ... Apr 12 2006, 02:01 PM Planet X QUOTE (angel1801 @ Apr 12 2006, 09:01 AM)... Apr 12 2006, 04:48 PM MichaelT I just read that the Max-Planck-Institute for Radi... Feb 1 2006, 10:32 AM SigurRosFan Here's the detailed press release:
- http://w... Feb 1 2006, 01:19 PM David QUOTE (SigurRosFan @ Feb 1 2006, 01:19 PM)Her... Feb 1 2006, 01:34 PM Rob Pinnegar QUOTE (SigurRosFan @ Feb 1 2006, 07:19 AM)A j... Feb 1 2006, 02:46 PM Big_Gazza I have heard a rumour that one of the Mormons secr... Feb 3 2006, 11:01 AM Bob Shaw QUOTE (Big_Gazza @ Feb 3 2006, 12:01 PM)I hav... Feb 3 2006, 01:24 PM AndyG QUOTE (Bob Shaw @ Feb 3 2006, 01:24 PM)Do you... Feb 3 2006, 03:35 PM JRehling QUOTE (Big_Gazza @ Feb 3 2006, 03:01 AM)I hav... Feb 10 2006, 05:50 PM punkboi QUOTE (JRehling @ Feb 10 2006, 10:50 AM)http:... Feb 10 2006, 05:54 PM Katie QUOTE (JRehling @ Feb 10 2006, 10:50 AM)http:... Feb 11 2006, 08:30 AM ljk4-1 I like the idea that when you die you get to evolv... Feb 11 2006, 07:12 PM ljk4-1 Looks a lot like Europa!
UB 313: Larger t... Feb 11 2006, 09:53 PM David QUOTE (ljk4-1 @ Feb 11 2006, 09:53 P... Feb 12 2006, 03:48 PM tty QUOTE (ljk4-1 @ Feb 11 2006, 08:12 P... Feb 12 2006, 07:31 PM Katie QUOTE (Big_Gazza @ Feb 3 2006, 03:01 AM) ... Feb 13 2006, 04:06 AM ljk4-1 QUOTE (Katie @ Feb 12 2006, 11:06 PM) Bei... Feb 13 2006, 04:55 AM Bob Shaw QUOTE (ljk4-1 @ Feb 13 2006, 04:55 A... Feb 13 2006, 12:05 PM BruceMoomaw QUOTE (Big_Gazza @ Feb 3 2006, 11:01 AM)I hav... Feb 11 2006, 08:56 AM BruceMoomaw If they declare Pluto a planet but 2003 UB313 a no... Feb 12 2006, 06:08 AM BruceMoomaw Actually, it's kind of flattering that the Gre... Feb 13 2006, 11:37 PM Bob Shaw QUOTE (BruceMoomaw @ Feb 13 2006, 11:37 P... Feb 14 2006, 08:57 AM edstrick "I can't believe I ate the ***WHOLE*** TH... Feb 14 2006, 10:41 AM dvandorn Personally, I'd be more worried about your stu... Feb 14 2006, 03:34 PM BruceMoomaw QUOTE (Bob Shaw @ Feb 14 2006, 08:57 AM) ... Feb 14 2006, 10:07 PM SFJCody Brown to discuss 'Xena' discovery
http://... Feb 19 2006, 12:34 PM SFJCody Amateurs spot 10th planet
http://www.spaceflightno... Feb 21 2006, 10:22 AM SFJCody The IAU will publish beginning of September 2006 t... Mar 4 2006, 10:27 AM BruceMoomaw Dear God, I hope they don't decide that Pluto ... Mar 4 2006, 10:48 PM Bob Shaw QUOTE (BruceMoomaw @ Mar 4 2006, 10:48 PM... Mar 4 2006, 10:58 PM SFJCody No news for a while, which is kind of a shame. I h... Mar 19 2006, 10:42 PM Rob Pinnegar Well, it's only been a month or so since the l... Mar 20 2006, 05:09 PM SFJCody UPDATE!
http://www.gps.caltech.edu/~mbrown/pl... Apr 11 2006, 05:45 PM ljk4-1 FOR RELEASE: 1:00 pm (EDT) April 11, 2006
Erica ... Apr 11 2006, 06:08 PM BruceMoomaw Robert Roy Britt, in his blog on this subject ( ht... Apr 12 2006, 12:09 AM Bob Shaw QUOTE (BruceMoomaw @ Apr 12 2006, 01:09 A... Apr 12 2006, 12:31 AM David QUOTE (BruceMoomaw @ Apr 12 2006, 12:09 A... Apr 12 2006, 01:22 AM Stephen QUOTE (BruceMoomaw @ Apr 12 2006, 12:09 A... Apr 12 2006, 03:37 AM nprev The IAU & everyone else has to face up to one ... Apr 12 2006, 03:41 AM Stephen QUOTE (nprev @ Apr 12 2006, 03:41 AM) Wel... Apr 12 2006, 04:45 AM David QUOTE (nprev @ Apr 12 2006, 03:41 AM) The... Apr 12 2006, 08:28 AM AndyG QUOTE (nprev @ Apr 12 2006, 04:41 AM) Def... Apr 12 2006, 01:46 PM BruceMoomaw I remain convinced of what I said in 1999: if you ... Apr 12 2006, 04:51 AM Jyril It's the mass that dominates. Even the least m... Apr 12 2006, 08:16 AM tedstryk QUOTE (Stephen @ Apr 12 2006, 06:05 AM) I... Apr 14 2006, 04:28 AM BruceMoomaw QUOTE (tedstryk @ Apr 14 2006, 04:28 AM) ... Apr 14 2006, 07:21 PM David QUOTE (BruceMoomaw @ Apr 14 2006, 07:21 P... Apr 14 2006, 08:18 PM BruceMoomaw QUOTE (David @ Apr 14 2006, 08:18 PM) But... Apr 17 2006, 06:45 PM David QUOTE (BruceMoomaw @ Apr 17 2006, 06:45 P... Apr 17 2006, 07:17 PM JRehling As if this issue hadn't already been faced on ... Apr 17 2006, 07:59 PM The Messenger QUOTE (JRehling @ Apr 17 2006, 01:59 PM) ... Apr 17 2006, 08:45 PM edstrick ....it was good enough for Zaljyx, and it's go... Apr 12 2006, 09:31 AM David QUOTE (edstrick @ Apr 12 2006, 09:31 AM) ... Apr 13 2006, 07:46 PM Decepticon Here is a image comparison... http://www.nasa.gov/... Apr 12 2006, 01:24 PM JamesFox When I read that blog by Robert Roy Britt, I notic... Apr 12 2006, 01:37 PM ljk4-1 Astrophysics, abstract
astro-ph/0604245
From: Mi... Apr 12 2006, 06:08 PM ljk4-1 Tenth planet as bright as fresh snow
It is only s... Apr 12 2006, 09:37 PM edstrick "Don't care what the latest rage is...Gim... Apr 14 2006, 09:50 AM Bob Shaw QUOTE (edstrick @ Apr 14 2006, 10:50 AM) ... Apr 14 2006, 11:51 AM Planet X I came up with a unique definition according to ma... Apr 14 2006, 09:08 PM SigurRosFan Interesting comment:
- Comment on the recent Hubb... Apr 17 2006, 04:52 PM SFJCody Brown et al make more measurements with Keck.
http... Apr 17 2006, 06:17 PM dvandorn Well -- for scientific purposes, it would be far m... Apr 17 2006, 08:47 PM BruceMoomaw Size makes more sense than discovery date, by any ... Apr 17 2006, 09:59 PM Stephen QUOTE (BruceMoomaw @ Apr 17 2006, 09:59 P... Apr 18 2006, 04:15 AM JamesFox When it comes to 2003 EL61, it's odd shape is ... Apr 18 2006, 01:56 AM BruceMoomaw Well, you've got to set the goalposts at SOME ... Apr 18 2006, 06:40 AM AndyG QUOTE (BruceMoomaw @ Apr 18 2006, 07:40 A... Apr 18 2006, 09:08 AM ugordan QUOTE (AndyG @ Apr 18 2006, 10:08 AM) ... Apr 18 2006, 09:21 AM David QUOTE (AndyG @ Apr 18 2006, 09:08 AM) Why... Apr 19 2006, 08:31 PM edstrick Also... at all 4 giant planets, there is a clear d... Apr 18 2006, 10:23 AM edstrick The arm-waving idea I've posted here before is... Apr 20 2006, 09:36 AM ljk4-1 Though it is not online, the July 24, 2006 issue o... Jul 21 2006, 02:40 PM |
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