Luna E-6 No.6


Luna E-6 No.6
Mission typeLunar lander
Mission durationFailed to orbit
Spacecraft properties
Spacecraft typeE-6
Launch mass1,422 kilograms (3,135 lb)
Start of mission
Launch date21 March 1964, 08:15:35 (1964-03-21UTC08:15:35Z) UTC
RocketMolniya-M 8K78M s/n T15000-20
Launch siteBaikonur 1/5

Luna E-6 No.6, sometimes identified by NASA as Luna 1964A,[1] and sometimes known in the West as Sputnik 27, was a Soviet spacecraft which was lost in a launch failure in 1964. It was a 1,422-kilogram (3,135 lb) Luna E-6 spacecraft,[2] the fourth of twelve to be launched.[3] It was intended to be the first spacecraft to perform a soft landing on the Moon, a goal which would eventually be accomplished by the final E-6 spacecraft, Luna 9.

Luna E-6 No.6 was launched at 08:15:35 UTC on 21 March 1964, atop a Molniya-M 8K78M carrier rocket,[3] flying from Site 1/5 at the Baikonur Cosmodrome.[4] A connecting rod in the Blok I stage broke, leading to a propellant valve failing to open completely. The stage developed insufficient thrust to reach orbit and it shut down at T+489 seconds. The upper stages and probe reentered the atmosphere and broke up.[5] Prior to the release of information about its mission, NASA correctly identified that it had been an attempt to land a spacecraft on the Moon.[1]


  1. ^ a b Williams, David R. (6 January 2005). "Tentatively Identified Missions and Launch Failures". NASA Space Science Data Coordinated Archive. Retrieved 30 July 2010.
  2. ^ Wade, Mark. "Luna E-6". Encyclopedia Astronautica. Retrieved 26 July 2010.
  3. ^ a b Krebs, Gunter. "Luna E-6". Gunter's Space Page. Retrieved 26 July 2010.
  4. ^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 26 July 2010.
  5. ^ Wade, Mark. "Soyuz". Encyclopedia Astronautica. Archived from the original on 17 January 2010. Retrieved 26 July 2010.

External links

  • Zarya - Luna programme chronology