It is classified as a high energy-peaked BL Lac object[3] or a synchrotron peaked blazar with a synchrotron peak of the spectral energy distribution appearing in ultraviolet and X-ray bands.

During its flaring state in May 2002, the blazar's flux level increased significantly as high as 2.2 Crab.

[12] Furthermore, an orphan flare, not accompanied by increasing activity in spectral bands, was also shown.

[8] In addition to its variability, 1ES 1959+650 shows gamma ray flares from short to long timescales.

There is also presence of some extended unpolarized emission to the north, which the electric vector position angle is found parallel to it while the core polarization on the other hand, is roughly 1.5 percent.