Cetus III

Cetus lll is an ultra-faint dwarf galaxy (UFD) that is a satellite galaxy to the Milky Way. It is located at a distance of 251 kiloparsecs in the constellation of Cetus. It has a half-light radius of 90 parsecs.^[1]

Cetus lll
Observation data
Constellation	Cetus
Distance	818,652 ly
Group or cluster	Milky Way subgroup
Characteristics
Type	Ultra-faint dwarf
Half-light radius (physical)	90

It was identified as a statistically significant overdensity of stars by the Subaru/Hyper Suprime-Cam Survey. It’s small size made it invisible to the Sloan Digital Sky Survey.^[1]