The objectives of STSAT-2 mission consist of three missions, which are the domestic development of a low earth orbit 100kg satellite which will be launched by KSLV-1(Korea Space Launch Vehicle-1) from the domestic space center (NARO Space Center),the development of advanced technology for small spacecraft, and the development and operation of world-class space science payloads. STSAT-2 have two payloads: the main payload, DREAM (Dual-channel Radiometer for Earth and Atmosphere Monitoring) and the secondary payload, LRA (Laser Retroreflector Array). The DREAM mission objectives are to acquire brightness temperature of the earth at 23.8 GHz and 37 GHz, and to acquire physical parameters such as cold liquid water and water vapor after post-processing. The mission objective of spacecraft techologies is to develop a thermally, mechanically, electrically stable and radial resistant spacecraft system having high-precision attitude determination and control capability in a high eccentric ellipsoidal orbit.

Unfortunately, the STSAT-2A satellite was lost due to a launch failure on August 25, 2009.

Mission Instrumentation: For spacecraft technology experiments, STSAT-2 has the following instrumentations onboard:

Pulsed Plasma Thruster (PPT)
Dual-Head Star Tracker (DHST)
Fine Digital Sun Sensor (FDSS)
Compact on-board computer
High-speed data transmission (10Mbps)

Mission Parameters:

STSAT-2 Mission Parameters
	STSAT-2A	STSAT-2B
Sponsor:	Mest, KAIST	MEST, KAIST
Expected Life:
Primary Applications:	Spacecraft development	Spacecraft development
Primary SLR Applications:	Precision orbit determination	Precision orbit determination
COSPAR ID:	TBD	TBD
SIC Code:	3801	3802
NORAD SSC Code:	TBD	TBD
Launch Date:	10-Aug-2009	Apr-2010
RRA Diameter:	20 cm	20 cm
RRA Shape:	hemisphere	hemisphere
Reflectors:	9 corner cubes	9 corner cubes
Orbit:	Elliptical	Elliptical
Inclination:	80 degrees	80 degrees
Eccentricity:	0.082	0.082
Perigee:	300 km	300 km
Apogee:	1500 km	1500 km
Weight:	100 kg	100 kg

Additional Information:

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