Progress MS-25

Progress MS-25 during final approach to the ISS
Names	Progress 86P
Mission type	ISS resupply
Operator	Roscosmos
COSPAR ID	2023-184A
SATCAT no.	58460
Mission duration	180 days, 2 hours and 23 minutes
Spacecraft properties
Spacecraft	Progress MS-25 no.455
Spacecraft type	Progress MS
Manufacturer	Energia
Launch mass	7000 kg
Start of mission
Launch date	1 December 2023, 09:25 UTC
Rocket	Soyuz-2.1a
Launch site	Baikonur , Site 31
Contractor	Progress Rocket Space Centre
End of mission
Disposal	Deorbited
Decay date	29 May 2024, 11:48 UTC
Orbital parameters
Reference system	Geocentric orbit
Regime	Low Earth orbit
Inclination	51.65°
Docking with ISS
Docking port	Poisk zenith
Docking date	3 December 2023, 11:18 UTC
Undocking date	28 May 2024, 08:39 UTC
Time docked	176 days, 21 hours and 21 minutes
Progress ISS Resupply ←  Progress MS-24 Progress MS-26  →

Progress MS-25 ( Russian : Прогресс МC-25 ), Russian production No.455, identified by NASA as Progress 86P , was a Progress spaceflight launched by Roscosmos to resupply the International Space Station (ISS). It was the 178th flight of a Progress spacecraft.

History [ edit ]

The Progress-MS is an uncrewed freighter based on the Progress-M featuring improved avionics. This improved variant first launched on 21 December 2015. It has the following improvements: ^{[1] [2] [3]}

• New external compartment that enables it to deploy satellites. Each compartment can hold up to four launch containers. First time installed on Progress MS-03 .
• Enhanced redundancy thanks to the addition of a backup system of electrical motors for the docking and sealing mechanism.
• Improved Micrometeoroid (MMOD) protection with additional panels in the cargo compartment.
• Luch Russian relay satellites link capabilities enable telemetry and control even when not in direct view of ground radio stations.
• GNSS autonomous navigation enables real time determination of the status vector and orbital parameters dispensing with the need of ground station orbit determination.
• Real time relative navigation thanks to direct radio data exchange capabilities with the space station.
• New digital radio that enables enhanced TV camera view for the docking operations.
• Unified Command Telemetry System (UCTS) replaces previous Ukrainian Chezara Kvant-V as the Progress spacecraft's on-board radio and antenna/feeder system.
• Replacement of the Kurs A with Kurs NA digital system.

Launch [ edit ]

A Soyuz-2.1a launched Progress MS-25 to the International Space Station from Baikonur Site 31 on 1 December 2023. Around 2 days after the launch, Progress MS-25 automatically docked with Poisk and continued its mission.

Undocking [ edit ]

Progress MS-25 undocked from Poisk on 28 May 2024, 05:00 UTC.

Deorbit [ edit ]

Progress MS-25 is scheduled to be Deorbited on 29 May 2024.

Cargo [ edit ]

The MS-25 cargo capacity is 2,528 kg (5,573 lb) as follows:

• Dry cargo: 1,500 kg (3,300 lb)
• Fuel: 515 kg (1,135 lb)
• Oxygen: 40 kg (88 lb)
• Water: 420 kg (930 lb)

See also [ edit ]

• Uncrewed spaceflights to the International Space Station

References [ edit ]