[2] This is a compact BL Lac object containing a radio source of extragalactic origins; discovered in 1970 during the continuum survey conducted by astronomers from Ohio State University.

[11][6] There is presence of large amplitude variability and evidence of position angles showing different rotations at both low and high frequencies from the object.

[13][14] When imaged at 43 GHz, the jet is revealed to become less defined, with a patch of weak diffused radio emission located southeast.

[14] Earlier observations via a very-long baseline Interferometry (VLBI) map shows the core as unresolved while the jet is found to have an orientation of 135° indicating a perpendicular magnetic field.

While images at 15 and 22 GHz respectively shows the presence of compact radio emission focused on the phase center, the image at 43 GHz shows PKS 1335-127 has a double structure containing components with a much stronger southern component.