Talk:Eris (dwarf planet)

Accurate Size

If Eris is bigger then Mercury it isn't a dwarf planet, because Mercury itself is a pure planet. --§ Alastor Moody _{(T + C)} 06:14, 20 September 2006 (UTC)

The classification as a dwarf planet is not only based on size (The following is from en:Definition of planet):

The IAU therefore resolves that planets and other bodies in our Solar System, except satellites, be defined into three 
distinct  categories in the following way:
.
(1) A "planet"1 is a celestial body that: (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome  
rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood 
around its orbit.
.
(2) A "dwarf planet" is a celestial body that: (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to 
overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape2, (c) has not cleared the 
neighbourhood around its orbit, and (d) is not a satellite.
.
(3) All other objects3 except satellites orbiting the Sun shall be referred to collectively as "Small Solar System Bodies".
.
Footnotes:
.
1 The eight planets are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. 
2 An IAU process will be established to assign borderline objects into either "dwarf planet" and other categories.
3 These currently include most of the Solar System asteroids, most Trans-Neptunian Objects (TNOs), comets, and other small bodies.
.
The IAU further resolves:
.
Pluto is a "dwarf planet" by the above definition and is recognized as the prototype of a new category of trans-Neptunian objects.

Eris is not bigger than Mercury. Eris is slightly bigger as Pluto, but Mercury is about twice as big. RaNdOm26 10:48, 1 December 2006 (UTC)

Simplify

Just interested to simplify this article. What ways can I make it simpler now? RaNdOm26 10:46, 1 December 2006 (UTC)

• IMHO, it reads a bit too scientific, too like a normal Wikipedia article - some of the terms need to be clarified, or at least linked. I'll try and work on it a bit myself. Berek 16:35, 1 December 2006 (UTC)

Merger

It looks like it should definitely be merged. All it needs is someone bold enough to do so. I would do it myself but astronomy is not my strong subject, so I am likely to introduce errors in the process. Once the text is merged and a summary is given simply redirect the other page to this one via

#REDIRECT [[2003 UB313 (dwarf planet)]]

with the "pre" tags removed. Ksbrown^talk 18:15, 6 February 2007 (UTC)

Hello, I just merged 2003 UB313 (dwarf planet) to here. There's not a lot of info in that article that's worthy though - some of it was out of date (eg. it said the object was about to receive a name..... today, it already has a name). RaNdOm26 17:50, 8 February 2007 (UTC)

Size

Should the article be changed so that it is clear that it is uncertain whether Eris or Pluto has the larger diameter? See Brown How big is Pluto, anyway?. Thrasymedes (talk) 18:25, 2 December 2013 (UTC)

What "rule"?

Now apparently there is a rule that they have to be named after a mythological figure. No source? Check. If you support it, then prove it to me. Ely - Talk 16:59, 19 August 2021 (UTC)