EGRET GAMMA-RAY SOURCE 2EG J0809+5117, A QUASAR WITH REDSHIFT OF 1.14

The low dispersion (400 Angstrom/mm) spectrum of the optical counterpa rt of a flat-spectrum radio source 87GB 080315.5+512613, which is one of two possible radio counterparts of 2EG J0809+5117, was obtained rec ently. The optical counterpart, which is 2.02 '' away from 87GB 080315 .5+512613 and 19.3' away from 2EG J0809+5117, was identified as a quas ar with redshift of 1.14. We noted that Matter et al. (1997) suggested the other radio counterpart 87GB 080459.4+495915 (OJ 508), which is 8 7.1' away from 2EG J0809+5117, is the more potential identification, t hough it was previously suggested to be the identification (with low c onfidence) of another nearby EGRET source 2EG J0807+4849. Our observat ion suggests that it is quite possible that 87GB 080315.5+512613 is th e identification of 2EG J0809+5117 rather than 87GB 080459.4+495915. B ut we still can not exclude the possibility of 87GB 080459.4+495915 at present. Moreover, in order to determine whether or not 87GB 080315.5 +512613 is a blazar type quasar, the optical polarization and variabil ity measures of its optical counterpart are strongly encouraged.