Progress MS-26

Progress MS-26 (Russian: Прогресс МC-26), Russian production No. 456, identified by NASA as Progress 87, is a Progress spaceflight launched by Roscosmos to resupply the International Space Station (ISS). It is the 179th flight of a Progress spacecraft.

Progress MS-26

Progress MS-26 departs the ISS
Names	Progress 87 ISS 87P
Mission type	ISS resupply
Operator	Roscosmos
COSPAR ID	2024-029A
SATCAT no.	58961
Mission duration	180 days, 2 hours, 23 minutes
Spacecraft properties
Spacecraft	Progress MS-26 No. 456[1]
Spacecraft type	Progress MS
Manufacturer	Energia
Launch mass	7,427 kg (16,374 lb)[2]
Payload mass	2,518 kg (5,551 lb)
Start of mission
Launch date	15 February 2024, 03:25:06 (2024-02-15UTC03:25:06Z) UTC[2]
Rocket	Soyuz-2.1a
Launch site	Baikonur, Site 31/6
Contractor	RKTs Progress
End of mission
Disposal	Deorbited
Decay date	13 August 2024, 05:49 (2024-08-13UTC05:50Z) UTC
Orbital parameters
Reference system	Geocentric orbit
Regime	Low Earth orbit
Inclination	51.65°
Docking with ISS
Docking port	Zvezda aft
Docking date	17 February 2024, 06:06:13 UTC
Undocking date	13 August 2024, 02:00:32 UTC
Time docked	177 days, 19 hours, 54 minutes
Cargo
Mass	2,518 kg (5,551 lb)
Pressurised	1,478 kg (3,258 lb)
Fuel	580 kg (1,280 lb)
Gaseous	620 kg (1,370 lb)
Water	420 kg (930 lb)
Progress flights ← Progress MS-25 Progress MS-27 →

Launch

A Soyuz-2.1a rocket launched Progress MS-26 from Baikonur Site 31/6 on 15 February 2024 at 03:25 UTC.^[3][4] After a flight that took 2 days, 2 hours and 41 minutes, Progress MS-26 automatically docked with the aft port of the Zvezda module of the ISS on 17 February 2024 at 06:06 UTC.^[5][6][4]

Manifest

Each Progress mission delivers over a thousand kilograms of supplies in its pressurized section, accessible to crewmembers. These supplies include consumables such as food, water, and air, along with equipment for maintenance and scientific research. In its unpressurized section, the spacecraft carries tanks of water, fuel, and gases to replenish the station’s resources and sustain its onboard atmosphere. These resources are transferred to the station through an automated process.^[7]

For this mission, Progress MS-28 was loaded with a total of 2,518 kg (5,551 lb) of cargo and supplies prior to launch. The cargo manifest includes the following:^[2][8]

• Pressurized supplies: 1,458 kg (3,214 lb)
• Fuel: 580 kg (1,280 lb)
• Oxygen gas: 580 kg (1,280 lb)
• Water: 420 kg (930 lb)
• Nitrogen gas: 40 kg (88 lb)

See also

• Uncrewed spaceflights to the International Space Station