Variable Stars - OJ 287
Type Extragalactic BL Lacertae-type Central black hole is among the largest known, with a mass of 18 billion solar masses Click for lightcurve Extragalactic BL Lacertae-type objects are compact quasi-stellar objects showing almost continuous spectra with weak emission and absorption lines and relatively rapid irregular light changes with amplitudes of 3 magnitudes in V or more. Sources of strong X-ray radiation and radio waves, their emission displays strong and variable linear polarization in the visible and infrared spectral regions.
Hills Observatory: 1 January 2013 to 15 September 2018
COMETS COMETS
DEEP SKY DEEP SKY