List of possible dwarf planets

There are many possible dwarf planets in the Solar System. Scientists do not know how many there are exactly. They say there may be up to 200 in the Kuiper Belt.  They also say there may be over 10,000 beyond this. The IAU has accepted six of them: Pluto, Eris, Haumea, Makemake, and Quaoar, as well as Ceres in the Inner Solar System. This article numbers those and other possible ones. Only Pluto and Ceres have been confirmed to be in equilibrium. Eris is more of a dwarf planet because of being similar to Pluto and more massive. Haumea and Makemake were accepted as dwarf planets for the naming rules, because they were not accepted dwarf planets. The consensus among astronomers include at least Gonggong, Sedna and Orcus. The IAU has accepted Quaoar in a 2022-2023 annual report.

List of possible dwarf planets

 Designation Measured meandiameter  Density Albedo Identified as a dwarf planet Category by Emeryet al. by Grundyet al. by Brown by Tancrediet al. by the IAU N I Triton      0.60 to 0.95 (likely in equilibrium) (moon of Neptune)      0.49 to 0.66  15px|Yes  15px|Yes  15px|Yes  15px|Yes 15px|Yes 2:3 resonant      0.96  15px|Yes  15px|Yes  15px|Yes  15px|Yes  15px|Yes  SDO      0.51  15px|Yes  15px|Yes  15px|Yes  15px|Yes  15px|Yes  resonant cubewano      0.81  15px|Yes  15px|Yes  15px|Yes  15px|Yes  15px|Yes  hot cubewano      0.14  15px|Yes  15px|Yes  15px|Yes  N/A   3:10 resonant P I Charon      0.2 to 0.5 (possibly in equilibrium) (moon of Pluto)     ≈ 1.7  0.11  15px|Yes  15px|Yes  15px|Yes  15px|Yes  15px|Yes  hot cubewano      0.09 (close to equilibrium) 15px|Yes  asteroid       0.23  15px|Maybe  15px|Yes  15px|Yes  15px|Yes   plutino (2:3 resonant)    ?  0.41  15px|Yes  15px|Yes  15px|Yes  15px|Yes   detached       0.04  15px|No  15px|Maybe  15px|Yes  15px|Maybe   hot cubewano    ?  0.10  15px|No  15px|No?  15px|Yes  N/A   hot cubewano    ?  0.11  15px|No  15px|No?  "highly likely"  15px|Yes   hot cubewano    ? or?  0.10  15px|No  15px|Maybe  "highly likely"  15px|Maybe   4:7 resonant     ?  0.17  15px|No  15px|No?  "highly likely"  N/A   SDO    or     0.10  15px|No  15px|No  "highly likely"  15px|Yes   plutino (2:3 resonant)    ?  0.10  15px|No  15px|No?  "highly likely"  15px|Yes   plutino (2:3 resonant)    ?    15px|No  15px|No?  "highly likely"  15px|Maybe   hot cubewano   or      or   15px|No  15px|No  "highly likely"  N/A   hot cubewano   or   ?  0.12  15px|No  15px|No?  "highly likely"  N/A   SDO   or   ?    15px|No  15px|No?  "highly likely"  15px|Yes   hot cubewano   or       15px|No  15px|No  "highly likely"  N/A   SDO    ?    15px|No  15px|No?  "highly likely"  N/A   SDO   or   ?    15px|No  15px|No?  "highly likely"  N/A   hot cubewano  ?  ?  0.09 assumed  15px|No  15px|No?  "likely"  N/A   detached   or   ?  0.09 assumed  15px|No  15px|No?  "likely"  N/A   1:6 resonant SDO    ?  0.11 assumed  15px|No  15px|No?  "highly likely"  N/A  15px|Maybe  SDO    0.5  0.53  15px|No  15px|No  "possibly"  15px|No?  15px|Maybe  asteroid    0.8  0.081  15px|No  15px|No  "probably"  15px|Yes     plutino (2:3 resonant)   or   ?    15px|No  15px|No  "possibly"  15px|Yes   SDO    0.5  0.051  15px|No  15px|No  "possibly"  N/A    plutino (2:3 resonant)    0.3  0.35  15px|No  15px|No  "possibly"  N/A   centaur    0.5  0.051  15px|No  15px|No  "possibly"  N/A    plutino (2:3 resonant)    0.2  0.25  15px|No  15px|No  "possibly"  N/A   centaur / comet    0.5  0.051  15px|No  15px|No  "possibly"  N/A    plutino (2:3 resonant)    0.4  0.43  15px|No  15px|No  "possibly"  15px|Yes   SDO    0.6  0.64  15px|No  15px|No  "possibly"  15px|Yes   cubewano    0.4  0.44  15px|No  15px|No  "possibly"  15px|Yes   SDO    0.5  0.55  15px|No  15px|No  "possibly"  15px|No?   detached

References

Category:Astronomy lists