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Because the resulting orbital apogee was ~572 km instead of the planned ~350 km for the nominal circular orbit, several times each day OSO 7 passed fairly deeply into the Van Allen radiation belts, so that bombardment by high energy protons made it somewhat radioactive. The activity then decayed slowly during other times of the day.
Dr. Nancy Roman with a model of OSO 1 (1962) OSO 1 diagram OSO 4 (1967). The Orbiting Solar Observatory (abbreviated OSO) Program was the name of a series of American space telescopes primarily intended to study the Sun, though they also included important non-solar experiments.
OTV-7 is the fourth mission for the second X-37B built, and the seventh X-37B mission overall. It was flown on a Falcon Heavy in the expendable center core-recoverable side cores configuration, and launched from Kennedy Space Center Launch Complex 39A.
Artist's conception of OAO-1 in orbit Technicians in a clean room check out the OAO 2 before the mission’s 7 December 1968, launch. Artist's conception of OAO-B in orbit OAO-3 in the clean room The Orbiting Astronomical Observatory ( OAO ) satellites were a series of four American space observatories launched by NASA between 1966 and 1972 ...
This comparison of retired orbital launch systems lists the attributes of all retired individual rocket configurations designed to reach orbit. For a list of proposed rocket configurations or individual configurations currently being launched check out Comparison of Orbital Launch Systems .
OA-7, previously known as Orbital-7, is the eighth flight of the Orbital ATK uncrewed resupply spacecraft Cygnus and its seventh flight to the International Space Station (ISS) under the Commercial Resupply Services contract with NASA. [5] The mission launched on 18 April 2017 at 15:11:26 UTC. Orbital and NASA jointly developed a new space ...
SDO then underwent a series of orbit-raising maneuvers over a few weeks which adjusted its orbit until the spacecraft reached its planned circular, geosynchronous orbit at an altitude of 35,789 km (22,238 mi), at 102° West longitude, inclined at 28.5°. [25]
The SOHO spacecraft is in a halo orbit around the Sun–Earth L1 point, the point between the Earth and the Sun where the balance of the (larger) Sun's gravity and the (smaller) Earth's gravity is equal to the centripetal force needed for an object to have the same orbital period in its orbit around the Sun as the Earth, with the result that ...