Progress M-61

Progress M-61 (Russian: Прогресс М-61), identified by NASA as Progress 26P, was a Progress spacecraft used to resupply the International Space Station. It was a Progress-M 11F615A55 spacecraft, with the serial number 361.

Progress M-61

Progress M-61 approaching the ISS.
Mission type	ISS resupply
Operator	Roskosmos
COSPAR ID	2007-033A
SATCAT no.	32001
Mission duration	173 days
Spacecraft properties
Spacecraft type	Progress-M s/n 361
Manufacturer	RKK Energia
Start of mission
Launch date	2 August 2007, 17:33:47 UTC
Rocket	Soyuz-U
Launch site	Baikonur, Site 1/5
End of mission
Disposal	Deorbited
Decay date	22 January 2008, 19:51 UTC
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Perigee altitude	336 km
Apogee altitude	347 km
Inclination	51.6°
Period	91.4 minutes
Epoch	2 August 2007
Docking with ISS
Docking port	Pirs
Docking date	5 August 2007, 18:40 UTC
Undocking date	22 December 2007, 03:59 UTC
Time docked	139 days
Cargo
Mass	2300 kg
Progress ISS Resupply ← Progress M-60 Progress M-62 →

Launch

Progress M-61 was launched by a Soyuz-U carrier rocket from Site 1/5 at the Baikonur Cosmodrome. Launch occurred at 17:33:47 UTC on 2 August 2007.^[1]

Docking

The spacecraft docked with the Pirs module at 18:40 UTC on 5 August 2007.^[2] It remained docked for almost 139 days before undocking at 03:59 UTC on 22 December 2007.^[3] Following undocking it conducted technological experiments and research as part of the Plazma-Progress programme for a month prior to being deorbited. It was deorbited at 19:06 UTC on 22 January 2008.^[3] The spacecraft burned up in the atmosphere over the Pacific Ocean, with any remaining debris landing in the ocean at around 19:51 UTC.^[4][5]

Progress M-61 carried supplies to the International Space Station, including food, water and oxygen for the crew and equipment for conducting scientific research.

See also

• Spaceflight portal

• List of Progress flights
• Uncrewed spaceflights to the International Space Station