RX J1450.5+6403 period from quiescent observations Dear Colleagues, We have received quiescent photometry of RX J1450.5+6403 from the Nyrola Observatory team (Arto Oksanen, Marko Moilanen, Timo Kinnunen). The period analysis has yielded a strong, sharp signal at P=0.0289 d and its double. The period is prettey close to the half of the spectroscopic period announced by John Thorstensen (vsnet-alert 4848). The feature is quite remniscent of other short-period SU UMa systems like WZ Sge, AL Com and BC UMa. More information from newly available data will be presented in vsnet-campaign. Regards, Taichi Kato, On behalf of the VSNET Collaboration team