Q16820623: Difference between revisions
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{{Page|Cygnus CRS OA-4| | {{Page|Cygnus CRS OA-4|Events|fifth cargo resupply mission to the International Space Station|OA-4; Orbital Sciences CRS Flight 4; S.S. Deke Slayton II}} | ||
Latest revision as of 12:58, 2 September 2025
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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.
2015
Wikimedia, Wikidata
OA-4; Orbital Sciences CRS Flight 4; S.S. Deke Slayton II
United Launch Alliance, low Earth orbit, Atlas V 401, .jpg)
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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 | ||
