Lunar Orbiter 5
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Lunar Orbiter 5, the last of the "Lunar Orbiter series",[1] was designed to take additional Apollo and Surveyor landing site photography and to take broad survey images of unphotographed parts of the Moon's far side. It was also equipped to collect selenodetic, radiation intensity, and micrometeoroid impact data and was used to evaluate the Manned Space Flight Network tracking stations and Apollo Orbit Determination Program.
Mission summary
The spacecraft was placed in a cislunar trajectory and on August 5, 1967 was injected into an elliptical near polar lunar orbit Script error: No such module "convert". with an inclination of 85 degrees and a period of 8 hours 30 minutes. On August 7 the perilune was lowered to Script error: No such module "convert"., and on August 9 the orbit was lowered to a Script error: No such module "convert"., 3 hour 11 minute period.[2]
The spacecraft acquired photographic data from August 6 to 18, 1967, and readout occurred until August 27, 1967.[3] A total of 633 high resolution and 211 medium resolution frames at resolution down to Script error: No such module "convert". were acquired, bringing the cumulative photographic coverage by the five Lunar Orbiter craft to 99% of the Moon's surface.[4] Accurate data were acquired from all other experiments throughout the mission. The spacecraft was tracked until it struck the lunar surface on command[2] at 2.79 degrees S latitude, 83 degrees W longitude (selenographic coordinates) on January 31, 1968.
Features on the near side of the Moon that were photographic targets included Petavius, Hyginus, Messier, Tycho, Copernicus, Gassendi, Vitello, Mons Gruithuisen Gamma, Prinz, Aristarchus, Vallis Schroteri, Marius Hills, Montes Apenninus, Rimae Plato, Sinus Aestuum, Hipparchus, Rimae Sulpicius Gallus, Rimae Calippus, Censorinus, Dionysius, and the future landing site of Apollo 11.[5]
| Lunar Photographic Studies : | Evaluation of Apollo and Surveyor landing sites |
| Meteoroid Detectors : |
Detection of micrometeoroids in the lunar environment |
| Caesium Iodide Dosimeters : | Radiation environment en route to and near the Moon |
| Selenodesy : | Gravitational field and physical properties of the Moon |
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Image of the Earth taken by Lunar Orbiter 5, enhanced by LOIRP
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Rimae Sulpicius Gallus on August 13, 1967 (Script error: No such module "Coordinates".)
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Southern rim of Gassendi A crater on August 17, 1967
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Rim of Aristarchus crater on August 18, 1967 (Script error: No such module "Coordinates".)
See also
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- Lunar Orbiter Image Recovery Project
- Exploration of the Moon
- List of artificial objects on the Moon
- List of missions to the Moon
References
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