Official name PLEIADES 1B
Alternative name Pleiades 1B
Cospar ID 2012-068A
Norad ID 39019
Launch date 2012-12-02
Launch site FRGUI
Launch vehicle Soyuz-ST-A Fregat
Country/Organization France
Type application Earth observation
Operator CNES
RCS size LARGE
Decay date ON ORBIT
Period (min) 98.73
Inclination (deg) 98.2
Perigee (km) 697
Apogee (km) 699
Eccentricity 0.00143266475644699
Mean motion (revs. per day) 14.5852324521422
Semi-Major axis (km) 7076.135
Raan (deg) 221.5396
Arg of perigee (deg) 98.4071
Shape Hex Cyl + 3 Pan
Mass (kg) 940
Diameter (m) 2
Height (m) 4
Span (m^2) 4
Lifetime 5 years
Contractors Astrium (prime), Alcatel
Equipment HiRI
Propulsion 4 × 15 Nms hydrazine thrusters
Configuration AstroSat-1000
Power 3 deployable solar arrays, batteries

Pléiades is the CNES (French national space agency) program designed as the follow-on to its highly successful Spot series of low Earth orbit (LEO) multi-mission observation satellites, which has operated an uninterrupted service since 1986.

The Pléiades-HR satellites are the high-resolution optical imaging component of the French-Italian Orfeo system, for which Italy is supplying the COSMO-Skymed radar component.

The ground resolution of the HiRI (High-Resolution Imager) will be 70 cm across a 20 km swath, while a very high degree of agility will allow them to acquire several images successively along track or off track, for mosaicking of ground scenes. The onboard storage capacity has been increased to 600 gigabits and the downlink data rate to 450 megabits per second.

The 970 kg satellites have a design lifetime of five years and onboard power capacity of 1,000 W.

Astrium is prime contractor for Pléiades satellite bus, including all functions dedicated to satellite control and monitoring as well as payload data handling and transmission, and is responsible for software development and satellite validation. Alcatel Space is responsible for the high-resolution instruments and image telemetry.

The satellites are coorbital with the lower resolution SPOT 6 and 7 satellites.

Satellite COSPAR Date LS Launch Vehicle Remarks
PLEIADES 1 2011-076F 2011-12-17 FRGUI Soyuz-ST-A Fregat with SSOT, ELISA 1, ELISA 2, ELISA 3, ELISA 4
PLEIADES 1B 2012-068A 2012-12-02 FRGUI Soyuz-ST-A Fregat