TITLE: GCN CIRCULAR NUMBER: 9116 SUBJECT: GRB 090406: pseudo-z= 0.91 from prompt emission spectrum DATE: 09/04/09 09:43:25 GMT FROM: Alexandre Pelangeon at LATT,CNRS,U. Toulouse A. Pelangeon & J-L. Atteia (LATT-OMP) report: We used the spectral parameters of GRB 090406 provided by Golenetskii et al. (GCNC 9103) to compute the spectral pseudo-redshift(**) of this burst detected by Konus-Wind and Konus-RF instrument. We find a pseudo-redshift pz= 0.91 +/- 0.10 ** cf. http://www.ast.obs-mip.fr/grb/pz