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David

Darling

largest Kuiper Belt objects

Largest known Kuiper Belt objects. Credit: NASA, ESA, and A. Feild (STScI)

Largest known Kuiper Belt objects. Credit: NASA, ESA, and A. Feild (STScI).


The following table lists all known Kuiper Belt objects (KBOs) with diameters that exceed or may exceed 1,000 kilometers. Pluto and its moon, Charon, are included because, although they are normally spoken of as a planet and satellite, respectively, both have many features in common with KBOs.

 

object abs. mag. geom. albedo diameter (km) type of KBO
Eris (2003 UB313) -1.2 0.6? 2400 ± 97 scattered
Pluto -1.0 0.6 2320 plutino
Orcus 2.2 0.04-0.12 ~1600 plutino
Sedna 1.6 0.2? <1500? detached
Charon 1.0 0.4 1270 plutino
2005 FY9 0.3 0.6? 1250? scattered
2003 EL61 0.4 0.6? 1200? classical
Quaoar 2.6 0.12 1260+/-190 classical
Ixion 3.2 0.09 1065+/-165 plutino
Varuna 3.7 0.07+/-0.02 900+/-140 classical
2002 AW197 3.2 0.1 890+/-120 scattered