dwarf planets (updated blog)

? =considered dwarf planet by most people but not proven
??? =probably not a dwarf planet but there are reasons it could be
IAU =International Astronomical Union, a group that try to standardise definitons and names of objects. only 5 objects are confirmed so far their definition for a dwarf planet is:

• must orbit sun
• must be hydrostatic equilibrium (rounded)
• must not clear orbit path of other objects
  TNO =Trans Neptunian Object (orbits further from sun than neptune)
  R🜨 =measurement of length compared to earth. Earth is R🜨=1 Moon is R🜨=0.2727

  Ceres R🜨=0.0742

  https://i.imgur.com/C1bE53o.jpg
  Named dwarf planet by IAU. it is located in the asteroid belt the first discovered in 1801. was thought to be a planet then an asteroid now a dwarf planet. only confirmed dwarf planet which is not a TNO. visited in March 2015.
  it might of had a subsurface water ocean in the past. it might have stable liquid water hidden in dark craters too.

  Hygeia???

  not confirmed, theres some evidence from 2019 the asteroid is in hydrostatic equilibrium which would make it dwarf planet, even though Vesta and Pallas are bigger asteroids so it wold be silly.

  Pluto R🜨=0.186

  https://i.imgur.com/EyzYeWn.jpg
  Named dwarf planet by IAU. discovered in 1930 it is a TNO and was also thought to be a planet, it is the biggest known.
  visited in July 2015, it has a heart made of flat surface ice caused by melting from collision or volcanoes. There is red material called tholins, it also has a small atmosphere of nitrogen
  it has 5 moons all small except charon
  https://imgs.xkcd.com/comics/pluto.png

  Charon??? R🜨=0.0951

  https://i.imgur.com/HMMcSjd.jpg
  not confirmed, discovered orbiting pluto in 1978, which reduced the believed size of pluto.is classified as a moon. but it affects pluto so much that the centre of mass is outside plutos surface so the IAU said it might be reclassified in the future as a dwarf planet in binary system.
  https://upload.wikimedia.org/wikipedia/commons/6/60/Animation_of_moons_of_Pluto_-_Front_view.gif

  Eris R🜨=0.1825

  https://i.imgur.com/X2DGk6C.jpg
  Named dwarf planet by IAU. discovered in 2005 its first size estimate made it bigger than pluto but now it is thought as a similar size. its discovery made the current definition of dwarf planet,
  it is more white than pluto because of methane ice.
  it has a small moon Dysnomia
  the picture you see is bad and the rest will be because the objects are not visited

  Haumea R🜨=0.12 (if it was a sphere)

  https://i.imgur.com/IVEQ43W.png
  Named dwarf planet by IAU. discovered in 2004
  its fast spinning stretched to an ellipsoid shape.it also has rings,
  it has 2 moons Hiʻiaka and Namaka

  Makemake R🜨=0.112

  https://i.imgur.com/Ip5bSh3.jpg
  Named dwarf planet by IAU. discovered in 2005
  it is probably more red than eris is. it probably has little or no atmosphere
  it has an unnamed moon

  Gonggong? R🜨=0.0983

  https://i.imgur.com/SwQhMR0.jpg
  surface similar to quaoar and is one of the reddest despite water ice not snow white possibly methane frost tholins.there is also some methanol on surface. it could have methane exosphere.
  it has a slow rotation probably because of its moon Xianglu.

  Quaoar? R🜨=0.0879

  https://i.imgur.com/mJLMkHt.png
  surface similar to gonggong but is less red. it could have methane exosphere
  it has a moon called Weywot

  Sedna? R🜨=0.0785

  https://i.imgur.com/OqkMEfQ.png
  one of the reddest, very long eliptical orbit 11,400 years to complete. closest: 76 AU furthest: 937 AU
  its the largest planetoid without any known moon

  Orcus? R🜨=0.0719

  https://i.imgur.com/AF6TfOl.jpg
  it orbits very similar to pluto. this is why some people call it the anti pluto
  it also has a big moon like pluto called Vanth

  Salacia? R🜨=0.0664

  https://i.imgur.com/QhZXMwq.png
  it orbits similar to pluto
  it has a moon Actaea

  there are probably thousands which havent been discovered. some might even be planet size, this list could be bigger in the future