Editing Mars 5 (section)

== Spacecraft ==
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.<ref name="DSC73">{{cite book|url=https://history.nasa.gov/monograph24/1973.pdf |archive-url=https://web.archive.org/web/20040925103513/http://history.nasa.gov/monograph24/1973.pdf |archive-date=2004-09-25 |url-status=live|last=Siddiqi|first=Asif A.|title=Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes 1958-2000|series=Monographs in Aerospace History, No. 24|year=2002|publisher=NASA History Office|chapter=1973|pages=101–106}}</ref> The Three cameras were a 52mm Vega, a 350mm Zulfar and a panoramic camera.<ref name=Harvey154>{{cite book |last=Harvey |first=Brian |date=2007 |title=Russian Planetary Exploration History, Development, Legacy and Prospects  |publisher=Springer-Praxis |page=154 |isbn=9780387463438}}</ref>

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.