Secret X-37B Space Plane Spotted by Amateur Skywatchers

While the U.S. Air Force is mum about the orbital whereabouts of its X-37B mini-space plane, a dedicated band of amateur skywatchers has got its cross-hairs on the spacecraft. The unpiloted X-37B Orbital Test Vehicle 1 was lofted on April 22 atop an Atlas launcher. It is being flown under the auspices of the U.S. Air Force Rapid Capabilities Office. In U.S. military tracking parlance, when the space plane reached orbit it became identified as Catalog Number 36514, 2010-015A, OTV-1 (USA 212). More

(Source: Space.com - May 23)