13P Olbers
13P may refer to: * SpaceShipOne flight 13P, a flight of SpaceShip One * 13P/Olbers 13P/Olbers is a periodic comet with an orbital period of 69 years. It fits the classical definition of a Halley-type comet with (20 years <

SpaceShipOne Flight 13P
Flight 13P of SpaceShipOne was its second powered flight, which occurred on April 8, 2004. The pilot was Peter Siebold. Details SpaceShipOne was released from White Knight at an altitude of 45,600 ft (13,900 m). Ignition was delayed by about two minutes to evaluate a shock-induced stall buffet. The rocket was lit at an altitude of 38,300 feet (11.7 km) for a 40-second burn. At burn-out, the Mach number was 1.6. The craft coasted to an apogee altitude of 105,000 feet (32.0 km). During reentry the craft attained Mach 0.9. The craft switched to glider configuration at 40,000 feet (12.2 km). The craft returned to the Mojave Airport The Mojave Air and Space Port at Rutan Field is in Mojave, California, United States, at an elevation of . It is the first facility to be licensed in the United States for horizontal launches of reusable spacecraft, being certified as a spa ... and landed safely. External linksSPACE.com article
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13P/Olbers
13P/Olbers is a periodic comet with an orbital period of 69 years. It fits the classical definition of a Halley-type comet with (20 years < < 200 years).

Heinrich Wilhelm Matthias Olbers

( Bremen) discovered the comet on March 6, 1815. Its orbit was first computed by

Carl Friedrich Gauss

on March 31,

Friedrich Bessel

calculat ...
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