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Experts meet to decide Pluto fate, Finally we'll know what a 'planet' is...
MizarKey
post Aug 14 2006, 06:06 AM
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One of many articles regarding the upcoming conference...

Experts meet to decide Pluto fate


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Eric P / MizarKey
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mcaplinger
post Aug 16 2006, 02:33 PM
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The barycenter rule is laughable, IMHO. You'd think they could have tried a little harder if the intent was to handle extrasolar double planets in the future, unless somebody had some political agenda to make Charon a planet. I'd have tried to make the minimum barycenter distance some function of the body radii so as to exclude Charon.

I also wonder how well the hydrostatic rule will work in practice around the low end, something we are likely to see either for KBOs or even for the larger asteroids.

Leave it to the IAU to overcomplicate what was a seemingly simple question.


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Disclaimer: This post is based on public information only. Any opinions are my own.
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Posts in this topic
- MizarKey   Experts meet to decide Pluto fate   Aug 14 2006, 06:06 AM
- - paxdan   IMHO pluto is NOT a planet.... Just thought i...   Aug 14 2006, 07:11 AM
- - akuo   I'm going to start a campaign to remove the pl...   Aug 14 2006, 08:20 AM
|- - David   QUOTE (akuo @ Aug 14 2006, 08:20 AM) I...   Aug 14 2006, 11:31 AM
|- - Ames   QUOTE (David @ Aug 14 2006, 12:31 PM) If ...   Aug 14 2006, 11:36 AM
- - djellison   You can think of all sorts of ways of branding whe...   Aug 14 2006, 11:45 AM
- - ups   "About 3,000 astronomers and scientists are m...   Aug 14 2006, 12:12 PM
- - rogelio   Concerning Pluto and the planet definition debate:...   Aug 14 2006, 01:06 PM
|- - JRehling   [...]   Aug 14 2006, 02:04 PM
- - remcook   JRehling, that's one of the most sensible argu...   Aug 14 2006, 02:46 PM
|- - David   I agree that the divisions are arbitrary, that the...   Aug 14 2006, 05:22 PM
- - volcanopele   David brought up a good point that this is more pr...   Aug 14 2006, 06:47 PM
|- - Alan Stern   [quote name='volcanopele' date='Aug 14...   Aug 15 2006, 11:43 AM
- - rogelio   Yes, as volcanopele and others have mentioned, ...   Aug 14 2006, 07:08 PM
- - DonPMitchell   An interesting point. Would NASA have been able t...   Aug 14 2006, 09:04 PM
- - SigurRosFan   In the news ... QUOTE Pluto the Ninth, Xena (2003 ...   Aug 15 2006, 11:18 AM
|- - DFinfrock   QUOTE (SigurRosFan @ Aug 15 2006, 11:18 A...   Aug 15 2006, 10:58 PM
|- - volcanopele   QUOTE (DFinfrock @ Aug 15 2006, 03:58 PM)...   Aug 16 2006, 12:09 AM
- - Greg Hullender   It's also worth mentioning that Ceres used to ...   Aug 15 2006, 01:47 PM
|- - David   QUOTE (Greg Hullender @ Aug 15 2006, 01:4...   Aug 15 2006, 04:56 PM
- - ljk4-1   According to SpaceToday.net via NPR (National Publ...   Aug 15 2006, 01:49 PM
|- - MahFL   I would like Pluto to remain a planet.   Aug 15 2006, 02:03 PM
- - ngunn   Does anyone feel like setting up a poll on this? (...   Aug 15 2006, 03:56 PM
- - volcanopele   QUOTE I must say that I disagree. As reductionists...   Aug 15 2006, 04:36 PM
|- - AlexBlackwell   QUOTE (volcanopele @ Aug 15 2006, 06:36 A...   Aug 15 2006, 04:45 PM
|- - volcanopele   QUOTE (AlexBlackwell @ Aug 15 2006, 09:45...   Aug 15 2006, 04:56 PM
|- - David   QUOTE (AlexBlackwell @ Aug 15 2006, 04:45...   Aug 15 2006, 05:01 PM
||- - Alan Stern   QUOTE (David @ Aug 15 2006, 05:01 PM) I d...   Aug 15 2006, 05:36 PM
||- - David   QUOTE (Alan Stern @ Aug 15 2006, 05:36 PM...   Aug 15 2006, 05:58 PM
||- - Alan Stern   QUOTE (David @ Aug 15 2006, 05:58 PM) I...   Aug 15 2006, 06:23 PM
||- - David   QUOTE (Alan Stern @ Aug 15 2006, 06:23 PM...   Aug 15 2006, 06:37 PM
|||- - Alan Stern   QUOTE (David @ Aug 15 2006, 06:37 PM) I r...   Aug 15 2006, 07:31 PM
|||- - ljk4-1   QUOTE (David @ Aug 15 2006, 02:37 PM) And...   Aug 15 2006, 08:13 PM
||- - vexgizmo   QUOTE (David @ Aug 16 2006, 10:14 AM) Ala...   Aug 16 2006, 05:58 PM
||- - David   QUOTE (vexgizmo @ Aug 16 2006, 05:58 PM) ...   Aug 16 2006, 06:04 PM
|- - JRehling   [...]   Aug 15 2006, 08:52 PM
|- - AlexBlackwell   QUOTE (JRehling @ Aug 15 2006, 10:52 AM) ...   Aug 15 2006, 09:03 PM
|- - JRehling   [...]   Aug 16 2006, 06:16 PM
|- - AlexBlackwell   QUOTE (JRehling @ Aug 16 2006, 08:16 AM) ...   Aug 16 2006, 07:25 PM
- - dvandorn   I think that the concept of "planet" has...   Aug 16 2006, 03:40 AM
- - Holder of the Two Leashes   It has been announced on the SpaceDaily website th...   Aug 16 2006, 03:45 AM
|- - mcaplinger   QUOTE (Holder of the Two Leashes @ Aug 15 200...   Aug 16 2006, 04:05 AM
|- - MichaelT   The relevant IAU press release can be found here: ...   Aug 16 2006, 09:06 AM
- - volcanopele   ? only 12? In your other post, you stated that th...   Aug 16 2006, 04:05 AM
- - dvandorn   So, is the new nursery-rhyme mnemonic for the plan...   Aug 16 2006, 04:23 AM
|- - ngunn   QUOTE (dvandorn @ Aug 16 2006, 05:23 AM) ...   Aug 16 2006, 12:44 PM
|- - Ames   QUOTE (ngunn @ Aug 16 2006, 01:44 PM) How...   Aug 16 2006, 12:53 PM
|- - ngunn   QUOTE (Ames @ Aug 16 2006, 01:53 PM) I li...   Aug 16 2006, 02:00 PM
- - nprev   Mmm...pickled spicy xylophones.... Interesting ...   Aug 16 2006, 05:11 AM
- - volcanopele   I certainly have no problem with having a lot of p...   Aug 16 2006, 05:22 AM
- - DonPMitchell   A wise choice. They have a nice physically-based ...   Aug 16 2006, 06:25 AM
- - djellison   Totally unrelated politics and political imagery r...   Aug 16 2006, 08:28 AM
- - ngunn   I wonder what happens if the mutual orbits are ecc...   Aug 16 2006, 10:31 AM
|- - ugordan   QUOTE (ngunn @ Aug 16 2006, 11:31 AM) I w...   Aug 16 2006, 10:50 AM
- - djellison   And just for good measure, an article about a back...   Aug 16 2006, 10:39 AM
|- - paxdan   QUOTE (djellison @ Aug 16 2006, 11:39 AM)...   Aug 16 2006, 11:06 AM
- - JamesFox   Personally, I have to admit that I feel rather une...   Aug 16 2006, 11:07 AM
|- - David   QUOTE (JamesFox @ Aug 16 2006, 11:07 AM) ...   Aug 16 2006, 11:15 AM
||- - JamesFox   QUOTE (David @ Aug 16 2006, 07:15 AM) 1. ...   Aug 16 2006, 11:25 AM
||- - David   QUOTE (JamesFox @ Aug 16 2006, 11:25 AM) ...   Aug 16 2006, 11:34 AM
|- - Ames   QUOTE (JamesFox @ Aug 16 2006, 12:07 PM) ...   Aug 16 2006, 11:40 AM
|- - Ames   QUOTE (Ames @ Aug 16 2006, 12:40 PM) That...   Aug 16 2006, 11:44 AM
|- - David   Does "double planet" imply a single enti...   Aug 16 2006, 11:57 AM
|- - MichaelT   QUOTE (David @ Aug 16 2006, 11:57 AM) Doe...   Aug 16 2006, 12:07 PM
|- - ugordan   QUOTE (MichaelT @ Aug 16 2006, 01:07 PM) ...   Aug 16 2006, 12:25 PM
|- - paxdan   QUOTE (ugordan @ Aug 16 2006, 01:25 PM) H...   Aug 16 2006, 12:41 PM
|- - Alan Stern   QUOTE (ugordan @ Aug 16 2006, 12:25 PM) H...   Aug 16 2006, 12:57 PM
|- - ngunn   QUOTE (Alan Stern @ Aug 16 2006, 01:57 PM...   Aug 16 2006, 01:22 PM
|- - ugordan   QUOTE (Alan Stern @ Aug 16 2006, 01:57 PM...   Aug 16 2006, 01:25 PM
|- - David   QUOTE (Alan Stern @ Aug 16 2006, 12:57 PM...   Aug 16 2006, 01:29 PM
- - ljk4-1   Just how binding is the IAU decision on astronomer...   Aug 16 2006, 12:48 PM
- - rogelio   Dateline 2015: U.S. Postal Service issues revised...   Aug 16 2006, 12:51 PM
- - maycm   My kids have a video of "Blues Clues" wh...   Aug 16 2006, 01:25 PM
- - djellison   I must admit - I was explaining all this to my eve...   Aug 16 2006, 01:37 PM
|- - David   QUOTE (djellison @ Aug 16 2006, 01:37 PM)...   Aug 16 2006, 01:49 PM
- - Tom Tamlyn   Today's New York Times has a good article on t...   Aug 16 2006, 01:44 PM
- - Greg Hullender   It does seem that it would have been useful to cre...   Aug 16 2006, 02:02 PM
- - mcaplinger   The barycenter rule is laughable, IMHO. You'd...   Aug 16 2006, 02:33 PM
|- - David   QUOTE (mcaplinger @ Aug 16 2006, 02:33 PM...   Aug 16 2006, 04:25 PM
|- - JRehling   [...]   Aug 16 2006, 04:29 PM
|- - David   QUOTE (JRehling @ Aug 16 2006, 04:29 PM) ...   Aug 16 2006, 05:14 PM
|- - AlexBlackwell   QUOTE (David @ Aug 16 2006, 07:14 AM) Ult...   Aug 16 2006, 05:31 PM
|- - JRehling   [...]   Aug 16 2006, 05:49 PM
|- - Alan Stern   [ > DPS PRESS RELEASE (Released 16 August 2006)...   Aug 16 2006, 05:51 PM
- - ljk4-1   A camel: A horse designed by committee.   Aug 16 2006, 02:42 PM
- - alan   They can't change Pluto's clasification wi...   Aug 16 2006, 03:04 PM
- - jsheff   Results are in: IAU   Aug 16 2006, 04:35 PM
|- - maycm   QUOTE (jsheff @ Aug 16 2006, 12:35 PM) Re...   Aug 16 2006, 04:40 PM
- - AlexBlackwell   I'm not sure if this has been mentioned, but h...   Aug 16 2006, 04:46 PM
- - vexgizmo   "A planet is a celestial body that (a) has su...   Aug 16 2006, 04:51 PM
- - hendric   The correct answer for the marginal cases is simpl...   Aug 16 2006, 05:29 PM
- - AlexBlackwell   The editorial that appears in the August 17, 2006,...   Aug 16 2006, 05:44 PM
- - Phil Stooke   As a rule of thumb for whether a non-spherical wor...   Aug 16 2006, 06:08 PM
|- - David   QUOTE (Phil Stooke @ Aug 16 2006, 06:08 P...   Aug 16 2006, 07:17 PM
- - AlexBlackwell   Phil Plait has an interesting take on it.   Aug 16 2006, 06:17 PM
- - volcanopele   now that I have heard the rational for the double ...   Aug 16 2006, 07:47 PM
|- - JRehling   [...]   Aug 16 2006, 07:58 PM
|- - David   QUOTE (JRehling @ Aug 16 2006, 07:58 PM) ...   Aug 16 2006, 08:08 PM
- - Jyril   The barycenter criterion may become handy in the c...   Aug 16 2006, 08:13 PM
- - jsheff   I don't have a problem with roundness as a cri...   Aug 16 2006, 08:13 PM
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