TITLE: GCN CIRCULAR NUMBER: 12865 SUBJECT: GRB 120119A: Gemini-S redshift DATE: 12/01/19 06:01:56 GMT FROM: Antonino Cucchiara at UCSC/UCO Lick A. Cucchiara, J. X. Prochaska (UCSC/UCO Lick) report on behalf of a larger collaboration: On January 19.20 UT (53 minutes after the BAT trigger) we observed the optical counterpart of GRB 120119A (Beardmore et al., GCN 12859) using GMOS-South on the Gemini-South 8-m telescope. Spectroscopic observation covering 4000-8000 Angstrom wavelength range reveals several absorption features, including AlIII1854, 1862, FeII2586,2600, MnII2606, MgII2796,2803 at a common redshift of 1.728. Also at least an intervening system is present at z=1.212 based on strong MgII2796 absorption features. We therefore suggest this to be the redshift of GRB 120119A. We thank the Gemini staff for performing this observation.