BZB J1717+2931 is a BL Lacertae object located in the constellation of Hercules. The redshift of the galaxy is (z) 0.277 and it is a member of the galaxy cluster, RBS 1634, residing as the brightest cluster galaxy (BCG).
BZB J1717+2931 is an active galactic nucleus (AGN) candidate. The optical spectrum of the galaxy displays strong signatures of emission lines, with the galaxy itself, displaying a color offset of -0.49 g – r magnitude. Evidence also found it is a galaxy-dominated (G type) BL Lacertae object with the u – r color index estimated to be 3.1 magnitude while the J – K color index is found to be 1.43 magnitude. The object is also a central elliptical galaxy with an estimated half viral radius of 1.003 arcmin.
The galaxy is also a bright X-ray source, identified in 2000 by ROSAT Bright Source Catalogue and also by NRAO VLA Sky Survey. A study also found the X-ray peak is shown coinciding with the galaxy's position with the X-ray emission being centered on it. The associated X-ray component to the galaxy is found to have an extent parameter of 30 arcminutes and has X-ray luminosity of 6.92E+44 erg s-1.
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