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Soyuz MS-23
 Soyuz MS-23 arriving at the International Space Station | |
| Names | ISS 69S |
|---|---|
| Mission type | Uncrewed spacecraft replacement mission to ISS |
| Operator | Roscosmos |
| COSPAR ID | 2023-024A |
| SATCAT no. | 55688 |
| Mission duration | 215 days, 10 hours and 53 minutes |
| Spacecraft properties | |
| Spacecraft | Soyuz MS No. 754 |
| Spacecraft type | Soyuz MS |
| Manufacturer | Energia |
| Crew | |
| Crew size | 0 up, 3 down |
| Landing | |
| Start of mission | |
| Launch date | 24 February 2023, 00:24 UTC |
| Rocket | Soyuz 2.1a |
| Launch site | Baikonur, 31/6 |
| Contractor | RKTs Progress |
| End of mission | |
| Landing date | 27 September 2023, 11:17 UTC |
| Landing site | Kazakh Steppe, Kazakhstan |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Low Earth orbit |
| Inclination | 51.66° |
| Docking with ISS | |
| Docking port | Poisk zenith |
| Docking date | 26 February 2023, 00:58 UTC |
| Undocking date | 6 April 2023, 08:45 UTC |
| Time docked | 39 days, 7 hours and 47 minutes |
| Docking with ISS (relocation)[a] | |
| Docking port | Prichal nadir |
| Docking date | 6 April 2023, 09:22 UTC |
| Undocking date | 27 September 2023, 07:54:21 UTC[1] |
| Time docked | 173 days, 22 hours and 32 minutes |
| Cargo | |
| Mass | ~430 kg (950 lb) |
 Landing mission insignia, which incorporated elements from the launching mission insignia  From left: Rubio, Prokopyev, and Petelin | |
Soyuz MS-23 was an uncrewed Russian Soyuz spaceflight that launched from Baikonur on 24 February 2023 to the International Space Station to replace the damaged Soyuz MS-22 spacecraft for landing that NASA astronaut Francisco Rubio and Roscosmos cosmonauts Sergey Prokopyev and Dmitry Petelin launched onboard on 21 September 2022 and had a coolant leak on 14 December before returning to Earth uncrewed on 28 March 2023.[2]
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