Context :

Aims : The AGILE gamma-ray burst GRB 080514B is the first burst with detected emission above 30 MeV and an optical afterglow .
However , no spectroscopic redshift for this burst is known .

Methods : We compiled ground-based photometric optical/NIR and millimeter data from several observatories , including the multi-channel imager GROND , as well as ultraviolet Swift UVOT and X-ray XRT observations .
The spectral energy distribution of the optical/NIR afterglow shows a sharp drop in the Swift UVOT UV filters that can be utilized for the estimation of a redshift .

Results : Fitting the SED from the Swift UVOT uvw 2 band to the H band , we estimate a photometric redshift of z = 1.8 ^ { +0.4 } _ { -0.3 } , consistent with the pseudo redshift reported by Pelangeon & Atteia ( 2008 ) based on the gamma-ray data .

Conclusions : The afterglow properties of GRB 080514B do not differ from those exhibited by the global sample of long bursts , supporting the view that afterglow properties are basically independent of prompt emission properties .