* Astronomy

Blobrana · L

RE: Mars 5 mission

Blobrana · L

Anniversary of the Soviet Mars 5 (Mars Orbiter) launch in 1973

Blobrana · L

Anniversary (1973), Mars 5 Launch (Soviet Mars Orbiter) on the 25th July.

Mars 5 reached Mars on February 12, 1974 at 15:45 UT and was inserted into an elliptical 1755 by 32,555 km, 24 h 53 min orbit with an inclination of 35.3 degrees. Nearly synchronized with the rotation of the planet, its two phototelevision cameras could be commanded to take 12 pictures during each close approach. The Vega camera used a wide area 52mm lens with color filters, the Zulfar camera used a telescopic 350mm lens and long-pass orange filter. Images were transmitted in a rapid 220-line mode, and then selected pictures were retransmitted at 880 or 1760 line resolution. Mars 5 collected data for 22 orbits until a loss of pressurization in the transmitter housing ended the mission. About 60 images were returned over a nine day period showing swaths of the area south of Valles Marineris, from 5°N 330°W to 20°S 130°W.
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Blobrana · L

Mars 5

* Launch date/time:
o Mars 5: July 25, 1973 at 18:55:48 UTC
* On-orbit mass:
o Dry: 2270 kg
o Fully-fuelled: 3440 kg

Mars 5 reached Mars on February 12, 1974 at 15:45 UT and was inserted into an elliptical 1755 by 32,555 km, 24 h 53 min orbit with an inclination of 35.3 degrees. Nearly synchronised with the rotation of the planet, its two phototelevision cameras could be commanded to take 12 pictures during each close approach.
Mars 5 collected data for 22 orbits until a loss of pressurisation in the transmitter housing ended the mission. About 60 images were returned over a nine day period showing swaths of the area south of Valles Marineris, from 5°N 330°W / 5°N 330°W / 5; -330 to 20°S 130°W / 20°S 130°W / -20; -130.

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