RCW52

The RCW catalog describes RCW 52 as a "Bright knot in η Carina nebula separated from main region by absorption".

This ring nebula is ionised by the O8 V star LSS 1887. Avedisova adds two additional B-class ionising stars. It is viewed next to the vast clouds of the Eta Carinae nebula (RCW 53) and may be nearby if the Avedisova estimate is correct or much further away if the Cameron Reed estimate from 1993 is correct.