STSat-2A (Science and Technology Satellite-2A) was a

satellite A satellite or artificial satellite is an object intentionally placed into orbit in outer space. Except for passive satellites, most satellites have an electricity generation system for equipment on board, such as solar panels or radioiso ...

launched by the

Korea Aerospace Research Institute The Korea Aerospace Research Institute (KARI), established in 1989, is the aeronautics and space agency of South Korea. Its main laboratories are located in Daejeon, in the Daedeok Science Town. KARI's vision is to continue building upon ind ...

(KARI), the national space agency of

South Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia, constituting the southern part of the Korea, Korean Peninsula and sharing a Korean Demilitarized Zone, land border with North Korea. Its western border is formed ...

, from the

Naro Space Center , image = Naro Space Center, 2021.jpg , caption = , LID = , type = Spaceport , owner = Government of South Korea , operator ...

Goheung County Goheung County (''Goheung-gun'') is a county in Jeollanam-do Province, South Korea. Naro Space Center The Naro Space Center was completed during 2008 in southern Goheung and is operated by the state-run Korea Aerospace Research Institute. Th ...

South Jeolla South Jeolla Province (; ''Jeollanam-do''; ), also known as Jeonnam, is a province of South Korea. South Jeolla has a population of 1,902,324 (2014) and has a geographic area of located in the Honam region at the southwestern tip of the Korean ...

using the

Naro-1 Naro-1 ( ko, 나로호), previously designated the Korea Space Launch Vehicle or KSLV (also KSLV-1), was South Korea's first carrier rocket, and the first South Korean launch vehicle to achieve Earth orbit. On January 30, 2013, the third Naro-1 ...

(KSLV-1)

launch vehicle A launch vehicle or carrier rocket is a rocket designed to carry a payload (spacecraft or satellites) from the Earth's surface to outer space. Most launch vehicles operate from a launch pads, supported by a launch control center and syste ...

Spacecraft

The Satellite Technology Research Center (SaTReC) developed STSat-2A as a

Sun The Sun is the star at the center of the Solar System. It is a nearly perfect ball of hot plasma, heated to incandescence by nuclear fusion reactions in its core. The Sun radiates this energy mainly as light, ultraviolet, and infrared rad ...

observation, satellite laser ranging and engineering and technology demonstration sponsored by the Ministry of Science and Technology. It was expected to be operational for about two years, and was scheduled to be launched between 2005 and 2007. The Laser Retroreflector Array (LRA) instrument was intended to measure the orbit of STSAT-2A, in order to investigate variations in its orbit. It was a follow-up to

STSat-1 The STSat-1 (Science and Technology Satellite-1), formerly known as KAISTSat-4 (Korea Advanced Institute of Science and Technology Satellite-4), is an ultraviolet telescope in a satellite. It is funded by the Korea Aerospace Research Institute ( ...

, which was launched using a

Kosmos-3M The Kosmos-3M (russian: Космос-3М meaning "''Cosmos''", GRAU index 11K65M) was a Russian space launch vehicle, member of the Kosmos rocket family. It was a liquid-fueled two-stage launch vehicle, first launched in 1967 and with over 420 ...

rocket on 27 September 2003. Originally a Dual-channel Radiometers for Earth and Atmosphere Monitoring (DREAM)

microwave radiometer A microwave radiometer (MWR) is a radiometer that measures energy emitted at one millimeter-to-metre wavelengths (frequencies of 0.3–300 GHz) known as microwaves. Microwave radiometers are very sensitive receivers designed to measure thermally- ...

was intended as the principal payload of STSat-2A for an expected launch in 2007. The Laser Retroreflector Array (LRA) was described as an early expected payload for STSat-2A which would consist of nine retroreflectors in a mechanical casing.

Mission

STSat-2A has three missions: the indigenous research and development to place a satellite into

low Earth orbit A low Earth orbit (LEO) is an orbit around Earth with a period of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less than 0.25. Most of the artificial objects in outer space are in LEO, with an altitude never m ...

, development of indigenous

spacecraft A spacecraft is a vehicle or machine designed to spaceflight, fly in outer space. A type of artificial satellite, spacecraft are used for a variety of purposes, including Telecommunications, communications, Earth observation satellite, Earth ...

, and the ability to develop scientific payloads.

Launch

STSat-2A was launched on the maiden flight of the

launch vehicle, which lifted off the

Naro Space Center , image = Naro Space Center, 2021.jpg , caption = , LID = , type = Spaceport , owner = Government of South Korea , operator ...

, on the southern coast of South Korea at 08:00:33 UTC on 25 August 2009. The launch failed to place STSat-2A into orbit after half of the payload fairing failed to separate. This resulted in the second stage being too heavy to reach orbit, and it fell back to

Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surf ...

along with the satellite. A second satellite,

STSat-2B STSat-2B, or Science and Technology Satellite-2B, was a South Korean satellite which was lost in the failure of the second flight of the Naro-1 launch vehicle. It was to have been operated by the Korea Aerospace Research Institute (KARI), and w ...

, was launched on 10 June 2010, but the launch vehicle failed again.

References

External links

{{Orbital launches in 2009 Earth observation satellites Satellite launch failures Satellites of South Korea Spacecraft launched in 2009

Spacecraft

Mission

Launch

See also

References

External links