About V0391 Peg b
V0391 Peg b is an uncommon exoplanet. It lies about 3,900.8 light-years from Earth, shines at apparent magnitude 14.77, has spectral type sdBV and has an equilibrium temperature near 520 K.
Too light to be solid rock and too heavy to be all gas: most likely a deep global ocean or a thick steamy envelope over a rocky core.