World Library  
Flag as Inappropriate
Email this Article

Mars 5


Mars 5

Mars 5
Mission type Mars orbiter[1]
Operator Lavochkin
COSPAR ID 1973-049A[2]
SATCAT № 6754[2]
Spacecraft properties
Spacecraft 3MS No.53S
Manufacturer Lavochkin
Start of mission
Launch date 25 July 1973, 18:55:48 (1973-07-25T18:55:48Z) UTC[3]
Rocket Proton-K/D
Launch site Baikonur 81/24
End of mission
Last contact Did not recognize date. Try slightly modifying the date in the first parameter.
Orbital parameters
Reference system Areocentric
Periareon 1,760 kilometres (1,090 mi)
Apoareon 32,586 kilometres (20,248 mi)
Inclination 35.3 degrees
Epoch 12 February 1974
Mars orbiter
Orbital insertion 12 February 1974, 15:45 UTC[2]

Mars 5 (Russian: Марс-5), also known as 3MS No.53S was a Soviet spacecraft launched to explore Mars. A 3MS spacecraft launched as part of the Mars programme, it successfully entered orbit around Mars in 1974. However, it failed a few days later.


  • Spacecraft 1
  • Launch 2
  • See also 3
  • References 4


The Mars 5 spacecraft carried an array of instruments to study Mars. In addition to cameras, it was equipped with a radio telescope, an IR radiometer, multiple photometers, polarimeters, a magnetometer, plasma traps, an electrostatic analyser, a gamma-ray spectrometer, and a radio probe.[4]

Built by Lavochkin, Mars 5 was the second of two 3MS spacecraft launched to Mars in 1973, following Mars 4. A 3MS was also launched during the 1971 launch window as Kosmos 419. However, due to a launch failure, it failed to depart Earth orbit. In addition to the orbiters, two 3MP lander missions, Mars 6 and Mars 7, were launched during the 1973 window.


Mars 5 was launched by a Proton-K carrier rocket with a Blok D upper stage, flying from Baikonur Cosmodrome Site 81/24.[3] The launch occurred at 18:55:48 UTC on 25 July 1973, with the first three stages placing the spacecraft and upper stage into a low Earth parking orbit before the Blok D fired to propel Mars 5 into heliocentric orbit bound for Mars.

The spacecraft performed course correction manoeuvres on 3 August 1973 and 2 February 1974, before reaching Mars on 12 February. At 14:44:25 the spacecraft's engines ignited to begin its orbit insertion burn, which successfully placed it into an Areocentric orbit with a periapsis of 1,760 kilometres (1,090 mi), an apoapsis of 32,586 kilometres (20,248 mi), and 35.3 degrees inclination.[2][4]

The spacecraft's pressurised instrument compartment began to leak as soon as the spacecraft entered orbit around Mars, which controllers believed to be the result of a micrometeoroid impact during orbital insertion. It ceased operations on 28 February, having returned 180 photographic frames, 43 of which were of usable quality.[4]

See also


  1. ^ Krebs, Gunter. "Interplanetary Probes". Gunter's Space Page. Retrieved 12 April 2013. 
  2. ^ a b c d "Mars 5". US National Space Science Data Centre. Retrieved 12 April 2013. 
  3. ^ a b McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 12 April 2013. 
  4. ^ a b c Siddiqi, Asif A. (2002). "1973". Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes 1958-2000 (PDF). Monographs in Aerospace History, No. 24. NASA History Office. pp. 101–106. 
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.