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Luna 6 | font size="+1"> Luna 6 | | olspan="2" bgcolor="#000000" align="center" font size="-1" color="#ffffff"| | | b> Organization: | Soviet Union | | b> Major Contractors: | OKB-1 | | b> Mission Type: | Planetary Science Lunar landing | | b> Satellite of: | Sun | | b> Launch: | June 8, 1965 at 07:41:00 UTC | | b> Launch Vehicle: | Molniya 8K78M (4-Stage R-7 / SS-6) | | b> Mission Highlight: | Lunar flyby 159,612.8 km on
May 11, 1965, at 17:00 UTC. | | b> Mission Duration: | 3-days | | b> Mass: | 1,440 kg | | b> NSSDC ID: | 1965-044A | | b> Webpage: | NASA NSSDC Master Catalog | | olspan="2" cellspacing="0" cellpadding="2" bgcolor="#skyblue"|Orbital elements | | b> Semimajor Axis: | n/a | | b> Eccentricity: | n/a | | b> Inclination: | n/a | | b> Orbital Period: | n/a | | b> Apogee: | n/a | | b> Perigee: | n/a | | b> Orbits: | Heliocentric orbit | | olspan="2" cellspacing="0" cellpadding="2" bgcolor="#skyblue"|Instruments | | b> Close-Up Lunar Surface Photography : | Lunar photography | Luna 6 was an unmanned space mission of the Luna program, also called Lunik 6. Luna 6 was intended to travel to the Moon, but, because a midcourse correction failed, it missed the Moon by 159,612.8 km. On this ninth Soviet attempt at a lunar soft-landing, the mission proceeded as planned until the major midcourse correction late on 9 June. Although the main retro-rocket engine (the S5.5A) ignited on time, it failed to cut off and continued to fire until propellant supply was exhausted. An investigation later indicated that the problem had been due to human error; a command had been mistakenly sent to the timer that ordered the main engine to shut down. Although the spacecraft was sent on a completely wrong trajectory, ground controllers put the spacecraft through a series of steps to practice an actual landing, all of which were satisfactorily accomplished. Luna 6 passed by the Moon late on 11 June at a range of 161,000 kilometers and eventually entered heliocentric orbit. Contact was maintained to a distance of 600,000 kilometers from Earth. - Launch Date/Time: 1965-06-08 at 07:41:00 UTC
- On-orbit dry mass: 1440 kg
Luna 06
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