ASASSN-15lh is an extremely bright astronomical transient discovered by the All Sky Automated Survey for SuperNovae, with the appearance of a hypernova event.

Distance to Earth: 3.819 million light years

Coordinates: RA 22h 2m 15s | Dec -61° 39′ 35″

Peak apparent magnitude: 16.9

Spectral class: SLSNe (Type Ic)

Redshift: 0.2326

Host: APMUKS(BJ) B215839.70−615403.9