SIMBAD references

It is pointed out that the Seyfert 1 galaxy NGC 6212 is surrounded by a large number of quasi-stellar objects (QSOs), including the very active and rapidly varying radio QSO 3C 345, which lies only 4'.7 away from the center of the galaxy. There are two pairs of QSOs with the same redshifts, including 3C 345, very close to the nucleus of NGC 6212, and the very high density of the QSOs falls off rapidly with distance from that galaxy. If 3C 345 lies at the distance of NGC 6212, the proper motions in the radio jet in 3C 345, which have been studied in detail, correspond to only mildly relativistic speeds, of about 0.33c.