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Lunar Orbiter 5, the last of the Lunar Orbiter series, 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. The spacecraft was placed in a cislunar trajectory and on August 5, 1967 was injected into an elliptical near polar lunar orbit 194.5 by 6,023 kilometres (120.9 mi × 3,742.5 mi) with an inclination of 85 degrees and a period of 8 hours 30 minutes. On August 7 the perilune was lowered to 100 kilometers (62 mi), and on August 9 the orbit was lowered to a 99-by-1,499-kilometer (62 mi × 931 mi), 3 hour 11 minute period.

Lunar Orbiter 5
Image of the Earth taken by Lunar Orbiter 5, enhanced by LOIRP
Mission typeLunar orbiter
OperatorNASA
COSPAR ID1967-075A
SATCAT no.2907
Mission duration183 days
Spacecraft properties
ManufacturerLangley Research Center
Launch mass385.6 kilograms (850 lb)
Start of mission
Launch dateAugust 1, 1967, 22:32:00 (1967-08-01UTC22:32Z) UTC
RocketAtlas SLV-3 Agena-D
Launch siteCape Canaveral LC-13
End of mission
DisposalDeorbited
Decay dateJanuary 31, 1968 (1968-02-01)
Orbital parameters
Reference systemSelenocentric
Semi-major axis4,846.8 kilometers (3,011.7 mi)
Eccentricity0.26
Periselene altitude194.5 kilometers (120.9 mi)
Aposelene altitude6,023 kilometers (3,743 mi)
Inclination85 degrees
Period510.08 minutes
Lunar orbiter
Orbital insertionAugust 5, 1967
Impact site02.79°S 83.01°W / -02.79; -83.01
Orbits1,380
Lunar Orbiter program
None 
 

The spacecraft acquired photographic data from August 6 to 18, 1967, and readout occurred until August 27, 1967. A total of 633 high resolution and 211 medium resolution frames at resolution down to 2 meters (6 ft 7 in) were acquired, bringing the cumulative photographic coverage by the five Lunar Orbiter craft to 99% of the Moon's surface. Accurate data were acquired from all other experiments throughout the mission. The spacecraft was tracked until it struck the lunar surface on command at 2.79 degrees S latitude, 83 degrees W longitude (selenographic coordinates) on January 31, 1968.

Instruments
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

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.

Spacecraft orbit and photographic coverage on the near side (left) and far side (right)
Spacecraft orbit and photographic coverage on the near side (left) and far side (right)

See also





На других языках


[de] Lunar Orbiter 5

Lunar Orbiter 5 war die letzte Mondsonde des Lunar-Orbiter-Programms der US-amerikanischen Weltraumorganisation NASA. Mit dem Lunar Orbiter-Programm sollte der Mond fotografisch erfasst und kartografiert werden, um so Landeplätze für die Raumsonden des Surveyor-Programms sowie für die bemannte Mondlandung zu finden.
- [en] Lunar Orbiter 5

[ru] Лунар орбитер-5

Лунар орбитер-5 (англ. Lunar Orbiter 5) — автоматический беспилотный космический аппарат НАСА, разработанный в рамках программы «Лунар орбитер», был запущен в 1967 году с целью картографирования поверхности Луны. Аппарат успешно выполнивший поставленные цели, став пятым и последним американским искусственным спутником Луны этой серии.



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