The indigenous PSLV, or Polar Satellite Launch Vehicle, is set to mark its 63rd launch with Earth Observation Satellite-09 (EOS-09) on May 18, said Indian Space Research Organisation (ISRO) Chairman V. Narayanan on Friday. Narayanan noted that EOS-09 will be the 101st satellite to be launched from the Satish Dhawan Space Centre in Sriharikota, Andhra Pradesh.