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- Q932976 subject Q15364588.
- Q932976 subject Q15364589.
- Q932976 subject Q15406105.
- Q932976 subject Q8606687.
- Q932976 abstract "The Lunar Orbiter 1 robotic (unmanned) spacecraft, part of the Lunar Orbiter Program, was the first American spacecraft to orbit the Moon. It was designed primarily to photograph smooth areas of the lunar surface for selection and verification of safe landing sites for the Surveyor and Apollo missions. It was also equipped to collect selenodetic, radiation intensity, and micrometeoroid impact data.The spacecraft was placed in an Earth parking orbit on August 10, 1966 at 19:31 (UTC). The trans-lunar injection burn occurred at 20:04 (UTC). The spacecraft experienced a temporary failure of the Canopus star tracker (probably due to stray sunlight) and overheating during its cruise to the Moon. The star tracker problem was resolved by navigating using the Moon as a reference, and the overheating was abated by orienting the spacecraft 36 degrees off-Sun to lower the temperature.Lunar Orbiter 1 was injected into an elliptical near-equatorial lunar orbit 92.1 hours after launch. The initial orbit was 189.1 by 1,866.8 kilometres (117.5 mi × 1,160.0 mi) and had a period of 3 hours 37 minutes and an inclination of 12.2 degrees. On August 21, perilune was dropped to 58 kilometres (36 mi) and on August 25 to 40.5 kilometres (25.2 mi). The spacecraft acquired photographic data from August 18 to 29, 1966, and readout occurred through September 14, 1966.A total of 42 high-resolution and 187 medium-resolution frames were taken and transmitted to Earth covering over 5 million square kilometers of the Moon's surface, accomplishing about 75% of the intended mission, although a number of the early high-resolution photos showed severe smearing. It also took the first two pictures of the Earth ever from the distance of the Moon. Accurate data were acquired from all other experiments throughout the mission.Orbit tracking showed a slight "pear-shape" of the Moon based on the gravity field, and no micrometeorite impacts were detected. The spacecraft was tracked until it impacted the lunar surface on command at 7 degrees north latitude, 161 degrees east longitude (selenographic coordinates) on the Moon's far side on October 29, 1966 on its 577th orbit. The early end of the nominal one-year mission was due to the small amount of remaining attitude control gas and other deteriorating conditions and was planned to avoid transmission interference with Lunar Orbiter 2.".
- Q932976 cosparId "1966-073A".
- Q932976 thumbnail Lunar_orbiter_1_(large).jpg?width=300.
- Q932976 wikiPageExternalLink contents.htm.
- Q932976 wikiPageExternalLink ?1.
- Q932976 wikiPageWikiLink Q1064739.
- Q932976 wikiPageWikiLink Q1066370.
- Q932976 wikiPageWikiLink Q1066381.
- Q932976 wikiPageWikiLink Q12189.
- Q932976 wikiPageWikiLink Q15364588.
- Q932976 wikiPageWikiLink Q15364589.
- Q932976 wikiPageWikiLink Q15406105.
- Q932976 wikiPageWikiLink Q170978.
- Q932976 wikiPageWikiLink Q18335.
- Q932976 wikiPageWikiLink Q2.
- Q932976 wikiPageWikiLink Q210448.
- Q932976 wikiPageWikiLink Q22938.
- Q932976 wikiPageWikiLink Q23548.
- Q932976 wikiPageWikiLink Q239221.
- Q932976 wikiPageWikiLink Q250644.
- Q932976 wikiPageWikiLink Q334465.
- Q932976 wikiPageWikiLink Q339963.
- Q932976 wikiPageWikiLink Q40218.
- Q932976 wikiPageWikiLink Q405.
- Q932976 wikiPageWikiLink Q46611.
- Q932976 wikiPageWikiLink Q570069.
- Q932976 wikiPageWikiLink Q583625.
- Q932976 wikiPageWikiLink Q589534.
- Q932976 wikiPageWikiLink Q6703683.
- Q932976 wikiPageWikiLink Q8606687.
- Q932976 wikiPageWikiLink Q862717.
- Q932976 wikiPageWikiLink Q863248.
- Q932976 wikiPageWikiLink Q926485.
- Q932976 wikiPageWikiLink Q946427.
- Q932976 cosparId "1966".
- Q932976 type Place.
- Q932976 type ArtificialSatellite.
- Q932976 type CelestialBody.
- Q932976 type Location.
- Q932976 type Place.
- Q932976 type Satellite.
- Q932976 type Thing.
- Q932976 comment "The Lunar Orbiter 1 robotic (unmanned) spacecraft, part of the Lunar Orbiter Program, was the first American spacecraft to orbit the Moon. It was designed primarily to photograph smooth areas of the lunar surface for selection and verification of safe landing sites for the Surveyor and Apollo missions. It was also equipped to collect selenodetic, radiation intensity, and micrometeoroid impact data.The spacecraft was placed in an Earth parking orbit on August 10, 1966 at 19:31 (UTC).".
- Q932976 label "Lunar Orbiter 1".
- Q932976 depiction Lunar_orbiter_1_(large).jpg.