Talk:Sudarsky's gas giant classification

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Applying this system to exoplanet articles[edit]

I've noticed that this system is being applied to extrasolar planet articles. If you are going to do this, please make sure you have a reference where the particular Sudarsky class is assigned (note that Extrasolar Visions is a speculative site, and the speculations there should not be presented as fact). As far as I have found, the only place where the classes in this system are applied to specific planets is the paper outlining this system. Even then this should be presented as a theoretical calculation, not as a fact - these planets have not been directly observed, so saying what the dominant cloud type is is impossible. Chaos syndrome 23:23, 14 January 2006 (UTC)

Where exoplanets have been measured for appearance, or should have been measured but can't be seen (hinting at low albedo), or have been measured for atmosphere: I've been putting their stats in the article text to show how well Sudarsky's predictions have held up. As a bonus these measurements give real results for "appearance of extrasolar planets". -- Zimriel (talk) 04:14, 12 March 2008 (UTC)

Page & Wiki Maintenance[edit]

Merge to gas giant?[edit]

  • OBJECT I don't think Sudarsky is prevalent enough to merge into gas giant, besides, it'd clutter the gas giant article alot. Zzzzzzzzzzz 03:03, 24 January 2006 (UTC)
  • Object. I think this article is too speculative to be included to the gas giant article, which is mostly for the gas giants in our Solar System.--Jyril 10:43, 24 January 2006 (UTC)
  • object agree with jyril, but interresting stuff. -Pedro 03:34, 26 January 2006 (UTC)

Seeing as the consensus seems to be objection, I'll retract the merger suggestion. Chaos syndrome 10:52, 26 January 2006 (UTC)

Corrections[edit]

"No class II,III, ect.. gas giants are known in our solar system."[edit]

Is it really necessary to leave open the possibility that a planet the size of Jupiter might be hiding in the inner solar system somewhere? Algr 06:23, 28 January 2006 (UTC)

No. That's silly. Reyk 01:41, 12 February 2006 (UTC)

Extra-Sudarsky[edit]

Edited the system[edit]

See this for other ideas.
Sudarsky Planet Scale
Class Name Temprature (K)
O Methane 0°K / 70°K
Ib Ammonia 70°K / 150°K
Ia Hydrogen 150°K / 200°K
IIc Carbon 200°K / 225°K
IIb Water 225°K / 280°K
IIa Sulfur 280°K / 350°K
III Potassium 350°K / 900°K
IV Sodium 900°K / 1250°K
V Silicate 1250°K / 2000°K
VI Aluminum 2000°K / ...

I've done some tweeking to David Sudarsky's system. So it includes Neptune's class, the Venus & Mars temp. giants, plus the NH4SH giant & the Iron giant. — Hurricane Devon ( Talk ) 00:18, 6 January 2006 (UTC)

Please don't add this to the article, since it is original research which not allowed.--Jyril 12:26, 6 January 2006 (UTC)
No, this isn't for the artical. This for the talk. I had this idea, I just whanted to see what you thought of it. — Hurricane Devon ( Talk ) 13:51, 6 January 2006 (UTC)
Ok, no problem. I'm interested in how did you come up with this classification? AFAIK iron giants have been discussed before, but others are unknown to me.--Jyril 10:40, 24 January 2006 (UTC)

I redid the scale to make it look better. I also came up with a concept to use this with terrestrial planets. Since we won't know much about these terrestrial exoplanets, we could use Sudarsky's scale. Like dwarf galaxies, we put a lower case d in front of the roman no. (Ex: OGLE-05-390Lb: dO, IL Aquarii d: dIII).

Quick question, is it wrong to put Sudarsky's scale on {{Extrasolar Planet}}, because some people, especialy exovisioners, are more into Surdarsky's scale? — Hurricane Devon ( Talk ) 23:31, 29 January 2006 (UTC)

I would strongly oppose including the Sudarsky system in the extrasolar planet template, because it is speculative. Infoboxes should primarily be used for a short summary of data rather than presentation of speculation. Chaos syndrome 23:59, 29 January 2006 (UTC)

What about Uranus and Neptune?[edit]

The article says that Jupiter and Saturn are class I, but it never says what Uranus and Neptune are. —The preceding unsigned comment was added by 76.185.18.21 (talk) 22:55, 7 December 2006 (UTC).

It says they're ice giants, lacking the mass and internal properties to qualify. But then, maybe this wasn't clear back in '06.
Mind you now we have HD 149026 b, and maybe even Gliese 436 b. Are they gas giants? Probably not, but they probably have the cloud deck, and so outward appearance, of a gas giant. To my mind that qualifies at least HD 149026 b for this article. But we should hold off on Gliese 436 b for now. -- Zimriel (talk) 22:57, 8 August 2008 (UTC)

Methane and Sulfurous cloud jovian[edit]

You should add two more classes to the main article as in above subtitle as I seen in extrasolar visions. BlueEarth 21:25, 14 April 2007 (UTC)

Advancements post Sudarsky[edit]

Someday we are going to have to replace classes IV and V with pL and pM: [1] --Zimriel (talk) 19:58, 29 August 2008 (UTC)

'Iron giant' redirect'[edit]

- The phrase 'iron giant' redirects here. It should at least contain a line at the top of the page saying this and 'for the film, see The Iron Giant'. by User:Sordyne (fraid I can't be bothered signing in just to sign this) 15-02-2009

Appearance of ice giants[edit]

How would hot and warm ice giants appear? Any major difference from that of gas giants of similar temperatures? --JorisvS (talk) 17:11, 17 February 2014 (UTC)

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External links modified (January 2018)[edit]

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