Cygnus OA-7
OA-7, previously known as Orbital-7, is the eighth flight of the Orbital ATK uncrewed resupply spacecraft Cygnus and its seventh flight to the International Space Station (ISS) under the Commercial Resupply Services contract with NASA. The mission launched on 18 April 2017 at 15:11:26 UTC. Orbital and NASA jointly developed a new space transportation system to provide commercial cargo resupply services to the International Space Station (ISS). Under the Commercial Orbital Transportation Services (COTS) program, then Orbital Sciences designed and built Antares, a medium-class launch vehicle; Cygnus, an advanced maneuvering spacecraft, and a Pressurized Cargo Module which is provided by Orbital's industrial partner Thales Alenia Space.
Canadarm2 approaches the S.S. John Glenn | |
| Names | Orbital-7 (2008–2015) |
|---|---|
| Mission type | ISS logistics |
| Operator | Orbital ATK |
| COSPAR ID | 2017-019A |
| SATCAT no. | 42681 |
| Mission duration | 54 days, 1 hour, 56 minutes |
| Spacecraft properties | |
| Spacecraft | S.S. John Glenn |
| Spacecraft type | Enhanced Cygnus |
| Manufacturer |
|
| Launch mass | 7,220 kg (15,920 lb) |
| Start of mission | |
| Launch date | 18 April 2017, 15:11:26 UTC |
| Rocket | Atlas V 401 (AV-070) |
| Launch site | Cape Canaveral SLC-41 |
| Contractor | United Launch Alliance |
| End of mission | |
| Disposal | Deorbited |
| Decay date | 11 June 2017, 17:08 UTC |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Low Earth orbit |
| Inclination | 51.66° |
| Berthing at the International Space Station | |
| Berthing port | Unity nadir |
| RMS capture | 22 April 2017, 10:05 UTC |
| Berthing date | 22 April 2017, 12:39 UTC |
| Unberthing date | 4 June 2017, 11:05 UTC |
| RMS release | 4 June 2017, 13:10 UTC |
| Time berthed | 42 days, 22 hours, 26 minutes |
| Cargo | |
| Mass | 3,459 kg (7,626 lb) |
| Pressurised | 3,376 kg (7,443 lb) |
| Unpressurised | 83 kg (183 lb) |
NASA insignia | |
The Cygnus OA-7 is named the S.S. John Glenn in honor of astronaut and senator John Glenn, the first U.S. astronaut to orbit the Earth on Mercury-Atlas 6 and the oldest to go to space on STS-95, until 2021.