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{| border="1" cellpadding="2" cellspacing="0" align="right" width="400" style="margin:10px"
|+<font size="+1">''' Luna 11 '''</font>
|-
|colspan="2" bgcolor="#000000" align="center" font size="-1" color="#ffffff"|[[Image:Luna_orbiter_photo_bus.jpg |375px|Luna 11]]
|-
|''' Organization:'''||[[Soviet Union]]
|-
|''' Major Contractors:'''|| [[Lavochkin|GSMZ Lavochkin]]
|-
|''' Mission Type:'''|| [[Planetary Science]] Lunar Orbit
|-
|''' Satellite of:'''|| [[Moon]]
|-
|''' Launch:'''|| [[August 24]], [[1966]] at 08:03:00 [[UTC]]
|-
|''' Launch Vehicle:'''|| Molniya 8K78M (4-Stage R-7 / SS-6)
|-
|''' Mission Highlight:'''|| Entered lunar orbit on <br>[[August 27]], [[1966]], 21:49 UTC. 
|-
|''' Mission Duration:'''|| 38-days. Last contact [[October 1]], [[1966]]
|-
|''' [[Mass]]:'''|| 1,640 kg
|-
|''' NSSDC ID:'''|| 1966-078A
|-
|''' Webpage:'''|| [http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=1966-078A NASA NSSDC Master Catalog]
|-
!colspan="2" cellspacing="0" cellpadding="2" bgcolor="#skyblue"|[[Orbital elements]]
|-
|''' [[Semimajor Axis]]:'''|| 2,414.5 km
|-
|''' [[Eccentricity]]:'''|| .22
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|''' [[Inclination]]:'''|| 27°
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|''' Orbital Period:'''|| 178 minutes
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|''' Apogee:'''|| 1,193 km
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|''' Perigee:'''|| 160 km
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|''' Orbits:'''|| 277 
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!colspan="2" cellspacing="0" cellpadding="2" bgcolor="#skyblue"|Instruments
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|''' Imaging system :'''|| Lunar photography 
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|''' Gamma-ray spectrometer :'''||  
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|''' Magnetometer :'''||  
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|''' Radiation detectors :'''||  
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|''' Infrared radiometer :'''||  
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|''' Meteoroid detector :'''||  
|-
|''' R-1 transmission experiment :'''||  
|-
|}

'''Luna 11''' was an [[unmanned space mission]] of the Soviet Union's [[Luna program]]. It is also called Lunik 11.
Luna 11 was launched towards the [[Moon]] from an earth-orbiting platform and entered lunar orbit on August 28, 1966. The objectives of the mission included the study of:

#lunar gamma- and X-ray emissions in order to determine the Moon's chemical composition;
#lunar gravitational anomalies;
#the concentration of meteorite streams near the Moon; and,
#the intensity of hard corpuscular radiation near the Moon.

A total of 137 radio transmissions and 277 orbits of the Moon were completed before the batteries failed on October 1, 1966.

This subset of the &#8220;second-generation&#8221; Luna spacecraft, the Ye-6LF, was designed to take the first photographs of the surface of the Moon from lunar orbit. A secondary objective was to obtain data on mass concentrations
(&#8220;mascons&#8221;) on the Moon first detected by Luna 10. Using the basic Ye-6 bus, a suite of scientific instruments (plus an imaging system similar to the one used on Zond 3) replaced the small lander capsule used on the soft-landing flights. The resolution of the photos was reportedly 15 to 20 meters. A technological experiment included testing the efficiency of gear transmission in vacuum as
a test for a future lunar rover. Luna 11, launched only two weeks after the U.S. Lunar Orbiter, successfully entered lunar orbit at 21:49 UT on 27 August. Parameters were 160 x 1,193 kilometers. During the mission, the TV camera failed to return usable images because the spacecraft lost proper orientation
to face the lunar surface when a foreign object was lodged in the nozzle of one of the attitude-control thrusters. The other instruments functioned without fault before the mission formally ended on 1 October 1966 after the power supply had been depleted.

*Launch Date/Time: 1966-08-24 at 08:09:00 UTC
*On-orbit dry mass: 3616 kg
<br clear=all>
<table border="1" width="400" align="center">
<tr style="text-align:center;">
<td width="35%">'''Preceded by ''':<br>[[Luna 10]]</td>
<td width="30%">[[Luna program]]</td>
<td width="35%">'''Followed by ''':<br>[[Luna 12]]</td>
</tr>
</table>
<!-- this table is similar to those used in the articles Apollo 1, Apollo 2, etc. -->

{{NASA}}

[[Category:Luna programme]]