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Dnepropetrovsk Sputnik program1976 in spaceflightKosmos satellitesSpacecraft launched in 1976

RussianSovietsatelliteDnepropetrovsk SputnikYuzhnoye Design Bureauanti-ballistic missileKosmos-2Icarrier rocketSite 133/1Plesetsk Cosmodromelow Earth orbitKosmosInternational DesignatorNorth American Aerospace Defense Commandcatalogue numberDS-P1-Yuperigeeapogeeinclinationorbital perioddecayedreentered

Kosmos 818

Mission type	ABM radar target
COSPAR ID	1976-044A
SATCAT no.	08851
Spacecraft properties
Spacecraft type	DS-P1-Yu
Manufacturer	Yuzhnoye
Launch mass	400 kilograms (880 lb)
Start of mission
Launch date	18 May 1976, 11:00 (1976-05-18UTC11Z) UTC
Rocket	Kosmos-2I 63SM
Launch site	Plesetsk 133/1
End of mission
Decay date	7 March 1977 (1977-03-08)
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Perigee	267 kilometres (166 mi)
Apogee	468 kilometres (291 mi)
Inclination	71 degrees
Period	91.9 minutes

Kosmos 818 (Russian: Космос 818 meaning Cosmos 818), also known as DS-P1-Yu No.78, was a Soviet satellite which was launched in 1976 as part of the Dnepropetrovsk Sputnik programme. It was a 400-kilogram (880 lb) spacecraft, which was built by the Yuzhnoye Design Bureau, and was used as a radar calibration target for anti-ballistic missile tests.^[1]

A Kosmos-2I 63SM carrier rocket was used to launch Kosmos 818 from Site 133/1 of the Plesetsk Cosmodrome.^[2] The launch occurred at 11:00 UTC on 18 May 1976, and resulted in the successfully insertion of the satellite into low Earth orbit.^[3] Upon reaching orbit, the satellite was assigned its Kosmos designation, and received the International Designator 1976-044A.^[4] The North American Aerospace Defense Command assigned it the catalogue number 08851.

Kosmos 818 was the seventy-eighth and penultimate DS-P1-Yu satellite to be launched,^[1] and the seventy-first to successfully reach orbit.^[5] It was operated in an orbit with a perigee of 267 kilometres (166 mi), an apogee of 468 kilometres (291 mi), 71 degrees of inclination, and an orbital period of 91.9 minutes.^[6] It remained in orbit until it decayed and reentered the atmosphere on 7 March 1977.^[6]

See also

• 1976 in spaceflight

References

1. 
   ^ ^ab Wade, Mark. "DS-P1-Yu". Encyclopedia Astronautica. Archived from the original on 18 May 2012. Retrieved 2 September 2009..mw-parser-output cite.citationfont-style:inherit.mw-parser-output .citation qquotes:"""""""'""'".mw-parser-output .citation .cs1-lock-free abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-subscription abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registrationcolor:#555.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration spanborder-bottom:1px dotted;cursor:help.mw-parser-output .cs1-ws-icon abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center.mw-parser-output code.cs1-codecolor:inherit;background:inherit;border:inherit;padding:inherit.mw-parser-output .cs1-hidden-errordisplay:none;font-size:100%.mw-parser-output .cs1-visible-errorfont-size:100%.mw-parser-output .cs1-maintdisplay:none;color:#33aa33;margin-left:0.3em.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-formatfont-size:95%.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-leftpadding-left:0.2em.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-rightpadding-right:0.2em
   


2. 
   ^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 2 September 2009.
   


3. 
   ^ Wade, Mark. "Kosmos 2". Encyclopedia Astronautica. Archived from the original on 8 July 2012. Retrieved 2 September 2009.
   


4. 
   ^ "Cosmos 818". NSSDC Master Catalog. US National Space Science Data Center. Retrieved 2 September 2009.
   


5. 
   ^ Krebs, Gunter. "DS-P1-Yu (11F618)". Gunter's Space Page. Retrieved 2 September 2009.
   


6. 
   ^ ^ab McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 2 September 2009.
   

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