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 Canadarm2 approaches the S.S. Katherine Johnson | |
| Names | OA-15 (2016–2018) |
|---|---|
| Mission type | ISS logistics |
| Operator | Northrop Grumman |
| COSPAR ID | 2021-013A |
| SATCAT no. | 47689 |
| Website | NG-15 |
| Mission duration | 131 days, 7 hours, 53 minutes |
| Spacecraft properties | |
| Spacecraft | S.S. Katherine Johnson |
| Spacecraft type | Enhanced Cygnus |
| Manufacturer | |
| Start of mission | |
| Launch date | 20 February 2021, at 17:36:50 UTC[1] |
| Rocket | Antares 230+ |
| Launch site | Wallops Pad 0A |
| Contractor | Northrop Grumman |
| End of mission | |
| Disposal | Deorbited |
| Decay date | 2 July 2021, at 01:30 UTC |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Low Earth orbit |
| Inclination | 51.63° |
| Berthing at the International Space Station | |
| Berthing port | Unity nadir[2] |
| RMS capture | 22 February 2021, at 09:38 UTC [3] |
| Berthing date | 22 February 2021, 12:16 UTC[3] |
| Unberthing date | 29 June 2021 13:20 UTC |
| RMS release | 29 June 2021, at 16:32 UTC [4] |
| Time berthed | 127 days |
| Cargo | |
| Mass | 3,810 kg (8,400 lb) |
| Pressurised | 3,734 kg (8,232 lb) |
| Unpressurised | 76 kg (168 lb) |
 NASA insignia | |
NG-15,[1][5][6] previously known as OA-15, was the fifteenth launch of the Northrop Grumman robotic resupply spacecraft Cygnus and its fourteenth flight to the International Space Station (ISS) under the Commercial Resupply Services (CRS) contract with NASA. The mission launched on 20 February 2021 at 17:36:50 UTC.[1][7] This is the fourth launch of Cygnus under the CRS-2 contract.[8][9]
Orbital ATK (now Northrop Grumman Innovation Systems) 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, Orbital ATK designed, acquired, built, and assembled these components: Antares, a medium-class launch vehicle; Cygnus, an advanced spacecraft using a Pressurized Cargo Module (PCM) provided by industrial partner Thales Alenia Space of Turin, Italy, and a Service Module based on the Orbital GEOStar satellite bus.[10]
- ^ a b c "Antares rocket launches heavy cargo load to International Space Station". Spaceflight Now. 20 February 2021. Retrieved 21 February 2021.
- ^ "NASA TV Coverage Set for Next Cargo Launch to Space Station". NASA. 18 February 2021. Retrieved 20 February 2021.
This article incorporates text from this source, which is in the public domain.
- ^ a b "Cygnus Resupply Ship Bolted to Station's Unity Module". NASA. 22 February 2021. Retrieved 23 February 2021. This article incorporates text from this source, which is in the public domain.
- ^ "Cygnus supply ship departs space station after four-month mission". Spaceflight Now. 29 June 2021. Retrieved 29 June 2021.
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