ESO 248-6[]
ESO 248-6 is a possible contender for the largest known galaxy.
Physical Properties[]
Diameter[]
The diameter of ESO 248-6 is 409.44 kiloparsecs[1], or 1,335,400 light years, though this could be a large underestimate. Wikipedia states a size of 1,731,000 ly, using a different distance than NED. [2]
Classification[]
The galaxy classification is either an S0[1] or Elliptical (NED's classification of S0 is likely the most reliable).
Central Quasar[]
As mentioned earlier, the galaxy is a quasar galaxy. The galaxies central quasar is named USNOA2 0450-01132124.