Cygnus CRS OA-4

OA-4, previously known as Orbital-4, was the fourth successful flight of the Orbital ATK uncrewed resupply spacecraft Cygnus and its third flight to the International Space Station (ISS) under the Commercial Resupply Services (CRS-1) contract with NASA. With the Antares launch vehicle undergoing a redesign following its failure during the Orb-3 launch, OA-4 was launched by an Atlas V launch vehicle. Following three launch delays due to inclement weather beginning on 3 December 2015, OA-4 was launched at 21:44:57 UTC on 6 December 2015. With a liftoff weight of 7,492 kg (16,517 lb), OA-4 became the heaviest payload ever launched on an Atlas V. The spacecraft rendezvoused with and was berthed to the ISS on 9 December 2015. It was released on 19 February 2016 after 72 days at the International Space Station. Deorbit occurred on 20 February 2016 at approximately 16:00 UTC.

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2015  Wikimedia, Wikidata
OA-4, Orbital Sciences CRS Flight 4, S.S. Deke Slayton II
Cygnus, uncrewed spaceflight, United Launch Alliance, low Earth orbit, Atlas V 401, 

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Location: KML, Cluster Map, Maps,

2015-12-06T00:00:00Z

2015-12-06T00:00:00Z

2015 Cygnus CRS OA-4

2015-12-06T00:00:00Z

2015-12-06T00:00:00Z

rocket launch

2016-02-20T00:00:00Z

2016-02-20T00:00:00Z

atmospheric entry

2015-12-09T00:00:00Z

2015-12-09T00:00:00Z

docking and berthing of spacecraft

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Frameless

Orb CRS-4 Cygnus.6

Orb CRS-4 Cygnus.7

Orb CRS-4 Cygnus.8

Orb CRS-4 Cygnus.1

Orb CRS-4 Cygnus.2

Orb CRS-4 Cygnus.3

Orb CRS-4 Cygnus.4

Orb CRS-4 late loading

Orb CRS-4 encapsulation.2

Orb CRS-4 encapsulation.3

Type	Subtype	Date	Description	Notes	Source
commons	image		Orb CRS-4 Cygnus.6		Commons
commons	image		Orb CRS-4 Cygnus.7		Commons
commons	image		Orb CRS-4 Cygnus.8		Commons
commons	image		Orb CRS-4 Cygnus.1		Commons
commons	image		Orb CRS-4 Cygnus.2		Commons
commons	image		Orb CRS-4 Cygnus.3		Commons
commons	image		Orb CRS-4 Cygnus.4		Commons
commons	image		Orb CRS-4 late loading		Commons
commons	image		Orb CRS-4 encapsulation.2		Commons
commons	image		Orb CRS-4 encapsulation.3		Commons