TITLE: GCN CIRCULAR NUMBER: 6129 SUBJECT: GRB 070220: pseudo-z~2.15 from spectral parameters of the prompt DATE: 07/02/23 10:48:20 GMT FROM: Alexandre Pelangeon at LATT,OMP,Toulouse A. Pelangeon & J-L. Atteia (LATT-OMP) report: We have used the spectral parameters of GRB 070220 provided by Golenetskii et al. (GCNC 6124) to compute the spectral pseudo-redshift** of this burst detected by SWIFT-BAT (Stamatikos et al., GCNC 6114; Parsons et al., GCNC 6121). We find a pseudo-redshift pz= 2.15 ± 0.80 ** cf. http://www.ast.obs-mip.fr/grb/pz