PKS 2258-022 = MGAB-V1095: short-period variation
This object is identified with a radio-loud QSO (z=0.778).
However, the ZTF data show short-term variations.
The data were well expressed by a period of
0.1417938(2) d. The profile resembles that of a polar.
There is no indication of z=0 feature in the SDSS spectrum.
Very strange object!