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Progress M-21 (Russian: Прогресс M-21) was a Russian unmanned Progress cargo spacecraft, which was launched in January 1994 to resupply the Mir space station.

Progress M-21

A Progress-M spacecraft
Mission type	Mir resupply
COSPAR ID	1994-005A
SATCAT no.	22975[1]
Spacecraft properties
Spacecraft	Progress (No.221)
Spacecraft type	Progress-M[2]
Manufacturer	RKK Energia
Start of mission
Launch date	28 January 1994, 02:12:10 UTC[1]
Rocket	Soyuz-U[2]
Launch site	Baikonur, Site 1/5
End of mission
Disposal	Deorbited
Decay date	23 March 1994, 05:13 UTC[3]
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Perigee altitude	194 km[3]
Apogee altitude	236 km[3]
Inclination	51.6°[3]
Period	88.5 minutes[3]
Epoch	28 January 1994
Docking with Mir
Docking port	Kvant-1 aft[3]
Docking date	30 January 1994, 03:56:13 UTC
Undocking date	23 March 1994, 01:20:29 UTC
Progress (spacecraft) ← Progress M-20 Progress M-22 →

Launch

Progress M-21 launched on 28 January 1994 from the Baikonur Cosmodrome in Kazakhstan. It used a Soyuz-U rocket.[2]

Docking

Progress M-21 docked with the aft port of the Kvant-1 module of Mir on 30 January 1994 at 03:56:13 UTC, and was undocked on 23 March 1994 at 01:20:29 UTC.[3][4][5]

Decay

It remained in orbit until 23 March 1994, when it was deorbited. The deorbit burn occurred at 04:23 UTC, and the mission ended at 05:13 UTC.[3]

See also

• 1994 in spaceflight
• List of Progress missions
• List of uncrewed spaceflights to Mir

References

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