[3] This object was the record holder for almost a decade, before being surpassed by PKS 2000-330 in 1982 located at the redshift of (z) 3.78.

When reaching 20 mas south of the core, the jet immediately bends once again, this time at 90° and extends towards the east.

[10] A further study also shows the jet has three components, one of which is the fastest at a proper motion of 0.13 ± 0.01 mas yr−1.

[12] When at 10 mas from the core, the jet's absolute value of RM decreases to <100 rad m−2.

A rotational measurement was obtained at 4.8 and 8.3 GHz respectively, showing a high value of 2000 rad m−2 in the innermost region of OQ 172.