In December 2019, researchers at the Zwicky Transient Facility (ZTF) identified the sudden brightening of the nucleus within galaxy SDSS J133519.91+072807.4 (hereafter Ansky).

Earlier this year, on the 2nd of February 2022, the Zwicky Transient Facility (ZTF) identified a flash within the optical waveband, with an apparent magnitude of ~20.