OTV-4

USA-261, also referred to as Orbital Test Vehicle 4 (OTV-4) or AFSPC-5, is the second flight of the second Boeing X-37B, an American unmanned vertical-takeoff, horizontal-landing spaceplane. It was launched to low Earth orbit aboard an Atlas V rocket from Cape Canaveral on May 20, 2015. Its mission designation is part of the USA series.

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2015  Wikimedia, Wikidata
AFSPC-5; Orbital Test Vehicle 4; USA-261; X-37B OTV-4
space mission, United Launch Alliance, low Earth orbit, Atlas V 501, 

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Location: KML, Cluster Map, Maps,

2015-05-20T00:00:00Z

2015-05-20T00:00:00Z

2015 OTV-4

2017-05-07T00:00:00Z

2017-05-07T00:00:00Z

landing

2015-05-20T00:00:00Z

2015-05-20T00:00:00Z

rocket launch

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Frameless

X-37B OTV4 landed at Kennedy Space Center (170507-O-FH989-001)

X-37B OTV4 at Shuttle Processing Facility (170507-F-LD992-009)

X-37B OTV4 landed at Kennedy Space Center (170507-F-LD992-006)

X-37B OTV4 landed at Kennedy Space Center (170507-O-FH989-002)

X-37B OTV4 passing Vehicle Assembly Building (170507-F-LD992-008)

Type	Subtype	Date	Description	Notes	Source
commons	image		X-37B OTV4 landed at Kennedy Space Center (170507-O-FH989-001)		Commons
commons	image		X-37B OTV4 at Shuttle Processing Facility (170507-F-LD992-009)		Commons
commons	image		X-37B OTV4 landed at Kennedy Space Center (170507-F-LD992-006)		Commons
commons	image		X-37B OTV4 landed at Kennedy Space Center (170507-O-FH989-002)		Commons
commons	image		X-37B OTV4 passing Vehicle Assembly Building (170507-F-LD992-008)		Commons