STSat-2A

STSat-2A
Names	Science and Technology Satellite-2A
Mission type	Technology, Science
Operator	KAIST Satellite Technology Research Center (SaTReC)
Mission duration	2 years (planned); Failed to orbit
Spacecraft properties
Spacecraft type	STSat
Bus	STSat-1
Manufacturer	KAIST Satellite Technology Research Center (SaTReC)
Launch mass	100 kg (220 lb)
Dimensions	62 cm x 70 cm x 90 cm
Power	160 watts
Start of mission
Launch date	25 August 2009, 08:00:33 UTC
Rocket	Naro-1 # 1
Launch site	Naro Space Center
Contractor	Khrunichev / KARI
End of mission
Last contact	Failed to orbit
Orbital parameters
Reference system	Geocentric orbit (planned)
Regime	Low Earth orbit
Perigee altitude	300 km (190 mi)
Apogee altitude	1,500 km (930 mi)
Inclination	80.0°
Period	103.0 minutes
Instruments
	Dual-channel Radiometers for Earth and Atmosphere Monitoring (DREAM); Laser Retroreflector Array (LRA); Dual Head Star Tracker (DHST); Pulsed Plasma Thruster (PPT); Fine Digital Sun Sensor (FDSS)
	KITSAT program ← STSat-1 STSat-2B →

STSat-2A (Science and Technology Satellite-2A) ^[1] was a satellite launched by the Korea Aerospace Research Institute (KARI), the national space agency of South Korea, from the Naro Space Center in Goheung County, South Jeolla using the Naro-1 (KSLV-1) launch vehicle.^[2]^[3]

Spacecraft

The KAIST Satellite Technology Research Center (SaTReC) developed STSat-2A as a Sun 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.^[4] The Laser Retroreflector Array (LRA) instrument was intended to measure the orbit of STSAT-2A, in order to investigate variations in its orbit.^[5]

It was a follow-up to STSat-1, which was launched using a Kosmos-3M rocket on 27 September 2003. Originally a Dual-channel Radiometers for Earth and Atmosphere Monitoring (DREAM) microwave radiometer was intended as the principal payload of STSat-2A for an expected launch in 2007.^[6] 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.^[4]

Mission

STSat-2A has three missions: the indigenous research and development to place a satellite into low Earth orbit, development of indigenous spacecraft, and the ability to develop scientific payloads.^[5]

Launch

STSat-2A was launched on the maiden flight of the Naro-1 launch vehicle, which lifted off the Naro Space Center, 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.^[7] This resulted in the second stage being too heavy to reach orbit, and it fell back to Earth along with the satellite. A second satellite, STSat-2B, was launched on 10 June 2010, but the launch vehicle failed again.

References

^ "STSat-2". NASA. Archived from the original on 16 May 2010. Retrieved 26 August 2009. This article incorporates text from this source, which is in the public domain.
^ "South Korea Completes Space Center For Rocket Launch". AFP Nasdaq. 12 June 2009. Retrieved 14 June 2009.
^ "Government Approves Launch of South Korea's First Space Rocket". Telecoms Korea. 2 June 2009. Retrieved 14 June 2009.
^ ^a ^b "Korea's First Satellite for Satellite Laser Ranging" (PDF). NASA. Retrieved 14 June 2009. This article incorporates text from this source, which is in the public domain.
^ ^a ^b "STSat (Science and Technology Satellite)". Global Security. 4 February 2009. Retrieved 14 June 2009.
^ Kim, Sung-Hyun; De-Hai Zhang; Ho-Jin Lee; Hyuk Park; Seok-Hun Yun; Chun-Sik Chae; Eun-Sup Sim; Jing-Shan Jiang; Yong-Hoon Kim (25–29 July 2005). "Korean spaceborne microwave radiometer on STSAT-2: Dual-channel radiometers for earth and atmosphere monitoring (DREAM)". Proceedings. 2005 IEEE International Geoscience and Remote Sensing Symposium, 2005. IGARSS '05. Vol. 1. South Korea: Department of Mechatronics, Gwangju Institute of Science and Technology. pp. 464–466. doi:10.1109/IGARSS.2005.1526211. ISBN 0-7803-9050-4. S2CID 42049796.
^ "South Korean satellite lost shortly after launch". Yonhap News Agency. Retrieved 26 August 2009.

External links

[IRLS-1] "STSat-2". NASA. Archived from the original on 16 May 2010. Retrieved 26 August 2009. This article incorporates text from this source, which is in the public domain.

[2] "South Korea Completes Space Center For Rocket Launch". AFP Nasdaq. 12 June 2009. Retrieved 14 June 2009.

[3] "Government Approves Launch of South Korea's First Space Rocket". Telecoms Korea. 2 June 2009. Retrieved 14 June 2009.

[Lee-4] "Korea's First Satellite for Satellite Laser Ranging" (PDF). NASA. Retrieved 14 June 2009. This article incorporates text from this source, which is in the public domain.

[security-5] "STSat (Science and Technology Satellite)". Global Security. 4 February 2009. Retrieved 14 June 2009.

[6] Kim, Sung-Hyun; De-Hai Zhang; Ho-Jin Lee; Hyuk Park; Seok-Hun Yun; Chun-Sik Chae; Eun-Sup Sim; Jing-Shan Jiang; Yong-Hoon Kim (25–29 July 2005). "Korean spaceborne microwave radiometer on STSAT-2: Dual-channel radiometers for earth and atmosphere monitoring (DREAM)". Proceedings. 2005 IEEE International Geoscience and Remote Sensing Symposium, 2005. IGARSS '05. Vol. 1. South Korea: Department of Mechatronics, Gwangju Institute of Science and Technology. pp. 464–466. doi:10.1109/IGARSS.2005.1526211. ISBN 0-7803-9050-4. S2CID 42049796.

[yonhap-7] "South Korean satellite lost shortly after launch". Yonhap News Agency. Retrieved 26 August 2009.

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v t e ← 2008 Orbital launches in 2009 2010 →
January	USA-202 / Orion 6 Ibuki, Kukai, SDS-1, Sohla-1 Koronas-Foton
February	Omid NOAA-19 Progress M-66 Ekspress-AM44, Ekspress-MD1 Hot Bird 10, NSS-9, Spirale-A, Spirale-B OCO Telstar 11N Raduga-1
March	Kepler STS-119 (ITS S6) GOCE USA-203 Soyuz TMA-14
April	Eutelsat W2A USA-204 Kwangmyŏngsŏng-2 Compass-G2 RISAT-2, ANUSAT SICRAL 1B Yaogan 6 Kosmos 2450
May	USA-205 Progress M-02M STS-125 Herschel, Planck ProtoStar 2 TacSat-3, PharmaSat, AeroCube-3, HawkSat-1, CP6 Meridian 2 Soyuz TMA-15
June	LRO, LCROSS MEASAT-3a GOES 14 Sirius FM-5
July	TerreStar-1 Kosmos 2451, Kosmos 2452, Kosmos 2453 RazakSAT STS-127 (JEM-EF, AggieSat 2, BEVO-1, Castor, Pollux) Kosmos 2454, Sterkh No.11L Progress M-67 DubaiSat-1, Deimos-1, UK-DMC 2, Nanosat-1B, AprizeSat-3, AprizeSat-4
August	AsiaSat 5 USA-206 JCSAT-RA, Optus D3 STSat-2A STS-128 (Leonardo MPLM) Palapa-D
September	USA-207 / PAN HTV-1 Meteor-M No.1, BLITS, Sterkh-2, SumbandilaSat, UGATUSAT, Universitetsky-Tatyana-2 Nimiq 5 Oceansat-2, Rubin 9.1, Rubin 9.2, BeeSat-1, UWE-2, ITU-pSat1, SwissCube-1 USA-208 / STSS-Demo 1, USA-209 / STSS-Demo 2 Soyuz TMA-16
October	Amazonas-2, COMSATBw-1 WorldView-2 Progress M-03M USA-210 Thor 6, NSS-12
November	SMOS, PROBA-2 Progress M-MIM2 (Poisk) Shijian 11-01 STS-129 (ExPRESS-1, ExPRESS-2) Kosmos 2455 Intelsat 14 Eutelsat W7 IGS Optical 3 Intelsat 15
December	USA-211 Yaogan 7 Kosmos 2456, Kosmos 2457, Kosmos 2458 Yaogan 8, Xi Wang 1 Helios IIB Soyuz TMA-17 DirecTV-12
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).