Progress M-55
Progress M-55 departing the ISS.
Mission typeISS resupply
COSPAR ID2005-047A Edit this at Wikidata
SATCAT no.28906
Mission duration181 days
Spacecraft properties
Spacecraft typeProgress-M s/n 355
ManufacturerRKK Energia
Launch mass5700 kg
Start of mission
Launch date21 December 2005,
18:38:20 UTC
Launch siteBaikonur, Site 1/5
End of mission
Decay date19 June 2006, 17:53:14 UTC
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Epoch21 December 2005
Docking with ISS
Docking portPirs
Docking date23 December 2005,
19:46:18 UTC
Undocking date19 June 2006, 14:06:01 UTC
Time docked179 days
Mass1400 kg
(equipment and spare parts)
Fuel880 kg
Gaseous83 kg
Water210 kg
Progress ISS Resupply

Progress M-55 (Russian: Прогресс М-55), identified by NASA as Progress 20P, was a Progress spacecraft used to resupply the International Space Station. It was a Progress-M 11F615A55 spacecraft, with the serial number 355.[1]


Progress M-55 was launched by a Soyuz-U carrier rocket from Site 1/5 at the Baikonur Cosmodrome. Launch occurred at 18:38:20 UTC on 21 December 2005.[1]


The spacecraft docked with the Pirs module at 19:46:18 UTC on 23 December 2005.[2][3] It remained docked for almost 179 days before undocking at 14:06:01 UTC on 19 June 2006[2] to make way for Progress M-57.[4] It was deorbited at 17:06:01 UTC on 19 June 2006.[2] The spacecraft burned up in the atmosphere over the Pacific Ocean, with any remaining debris landing in the ocean at around 17:53:14 UTC.[2][5]

Progress M-55 carried supplies to the International Space Station, including food, water and oxygen for the crew and equipment for conducting scientific research.

See also


  1. ^ a b McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 2009-06-06.
  2. ^ a b c d Anikeev, Alexander. "Cargo spacecraft "Progress M-55"". Manned Astronautics - Figures and Facts. Archived from the original on 2008-03-03. Retrieved 2009-06-06.
  3. ^ Wade, Mark. "Progress M". Encyclopedia Astronautica. Archived from the original on 2009-07-10. Retrieved 2009-06-06.
  4. ^ Zak, Anatoly. "Progress cargo ship". RussianSpaceWeb. Retrieved 2009-06-06.
  5. ^ McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 2009-06-06.