SSETI Express (satellite)

SSETI Express
NamesExpress-OSCAR-53 (XO-53)
Student Space Exploration & Technology Initiative Express
Mission typeTechnology demonstration
OperatorEuropean Space Agency
COSPAR ID2005-043E Edit this at Wikidata
SATCAT no.28894
Mission duration2 months (planned)
12.5 hours (achieved)
Spacecraft properties
ManufacturerEuropean Space Agency
Launch mass62 kg (137 lb)
Payload mass24 kg (53 lb)
Dimensions56 × 56 × 90 cm (22 × 22 × 35 in)
Power20 watts
Start of mission
Launch date27 October 2005, 06:52:26 UTC[1]
RocketKosmos-3M
Launch sitePlesetsk, Site 132/1
ContractorYuzhnoye / NPO Polyot
Entered service27 October 2005
End of mission
Last contact27 October 2005
Orbital parameters
Reference systemGeocentric orbit[2]
RegimeSun-synchronous orbit
Perigee altitude682 km (424 mi)
Apogee altitude708 km (440 mi)
Inclination98.18°
Period98.67 minutes

SSETI Express was the first spacecraft to be designed and built by European students and was launched by the European Space Agency. SSETI Express (Student Space Exploration & Technology Initiative) is a small spacecraft, similar in size and shape to a washing machine. On board the student-built spacecraft were three CubeSat picosatellites, extremely small satellites weighing around one kg each.[3] These were deployed one hour and forty minutes after launch. Twenty-one university groups, working from locations spread across Europe and with very different cultural backgrounds, worked together via the internet to jointly create the satellite. The expected lifetime of the mission was planned to be 2 months. SSETI Express encountered an unusually fast mission development: less than 18 months from kick-off in January 2004 to flight-readiness.[4]

  1. ^ McDowell, Jonathan (21 July 2021). "Launch Log". Jonathan's Space Report. Retrieved 27 October 2021.
  2. ^ "SSETI Express". NASA. 21 October 2021. Retrieved 27 October 2021. Public Domain This article incorporates text from this source, which is in the public domain.
  3. ^ "First Internet-built student satellite successfully launched". ESA. 27 October 2005. Retrieved 27 October 2021.
  4. ^ "SSETI (Student Space Education and Technology Initiative)". ESA eoPortal Directory. 2021. Retrieved 27 October 2021.