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{{Infobox launch pad
| name = Site 90
| site = [[Baikonur Cosmodrome]]
| location =
| operator = [[RVSN]] [[VKS]] [[VKO]]
| tlaunches = 123
| pads = Two
| paddetails =
{{Infobox launch pad/pad
| designation = Site 90/19
| status = Inactive
| launches = 22
| unknown = yes
| first = 5 November 1963 |first_details = [[UR-200]]
| last = 9 December 1997 |last_details = [[Tsyklon-2]] / [[Kosmos 2347]]
| rockets = [[UR-200]] [[Tsyklon-2A]] [[Tsyklon-2]]
}} {{Infobox launch pad/pad
| designation = Site 90/20
| status = Active
| launches = 27
| unknown = yes
| first = 24 September 1964 |first_details = [[UR-200]]
| last = 25 June 2006 |last_details = [[Tsyklon-2]] / [[Kosmos 2421]]
| rockets = [[UR-200]] [[Tsyklon-2A]] [[Tsyklon-2]]
}}
}}
'''Site 90''' at the [[Baikonur Cosmodrome]] is a [[launch complex]] consisting of two pads, which has been used by [[UR-200]], [[Tsyklon-2A]] and [[Tsyklon-2]] rockets. Built in the 1960s for the UR-200, which was first launched from the complex on 3 November 1963,<ref name="UR-200">{{cite web|url=http://planet4589.org/space/lvdb/launch/UR-200|title=UR-200|work=Orbital and Suborbital Launch Database|first=Jonathan|last=McDowell|accessdate=2 March 2012}}</ref> it was converted for use by [[Tsyklon]] rockets after further development of the UR-200 was cancelled. One pad is currently active, pending the final Tsyklon-2 launch which is expected to occur in 2012.

The two pads at the site are 90/19, which was the first to be used, and 90/20, which saw its first launch in September 1964. The last launch from Site 90/19 occurred on 9 December 1997, whilst 90/20 remains operational, its most recent launch having occurred in June 2006.<ref name="R-36">{{cite web|url=http://planet4589.org/space/lvdb/launch/R-36|title=R-36|work=Orbital and Suborbital Launch Database|first=Jonathan|last=McDowell|accessdate=2 March 2012}}</ref> In total, the complex has been used for 123 launches as of March 2012. These launches consisted of nine UR-200,<ref>{{cite web|url=http://www.astronautix.com/lvs/ur200.htm|title=UR-200|first=Mark|last=Wade|work=Encyclopedia Astronautica|accessdate=2 March 2012}}</ref> eight Tsyklon-2A,<ref>{{cite web|url=http://www.astronautix.com/lvs/tsilon2a.htm|title=Tsiklon-2A|first=Mark|last=Wade|work=Encyclopedia Astronautica|accessdate=2 March 2012}}</ref> and 106 Tsyklon-2 rockets.<ref name="R-36"/> There is no data on which of the two pads was used for 74 of the Tsyklon-2 launches known to have originated from the complex, however it is known that twenty two launches, including six UR-200s and five Tsyklon-2As, occurred from Site 90/19, and 27 launches, including three UR-200s and three Tsyklon-2As, occurred from pad 90/20.<ref name="UR-200"/><ref name="R-36"/>

==References==
{{reflist}}

{{Baikonur Cosmodrome launch sites}}

[[Category:Baikonur Cosmodrome]]

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