cosmos.wikisort.org - Spacecraft

The Satellite System for Terrestrial Observation, Sistema Satelital para Observación de la Tierra (SSOT), also known as FASat-Charlie,[1] is a Chilean satellite which was launched on December 16, 2011.[2] The objective of the SSOT is to have a satellite system for the observation of Earth based on international cooperation.

SSOT

Mission type	Earth imaging
Operator	FACh
COSPAR ID	2011-076E
SATCAT no.	38011
Spacecraft properties
Bus	Myriade
Manufacturer	Astrium
Launch mass	117 kilograms (258 lb)
Start of mission
Launch date	17 December 2011, 02:03:48 (2011-12-17UTC02:03:48Z) UTC[3]
Rocket	Soyuz-STA/Fregat
Launch site	Kourou ELS
Contractor	Arianespace
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Perigee altitude	629 kilometres (391 mi)[4]
Apogee altitude	630 kilometres (390 mi)[4]
Inclination	97.88 degrees[4]
Period	97.17 minutes[4]
Epoch	25 January 2015, 03:18:11 UTC[4]

The project was commissioned by the Ministry of Defense from the European space manufacturer EADS Astrium - based in Toulouse, France - and had an acquisition cost of 72.5 million dollars, according to the contract signed on July 25, 2008.^{[citation needed]} The Soyuz rocket was used to put the satellite into orbit, which was launched in French Guiana from the spaceport of Kourou, currently used by the European Space Agency.[5]

SSOT is a Miniaturized satellite built on the Myriade satellite bus by EADS Astrium. It was part of a six-satellite payload along with Pléiades-HR 1, ELISA 1, ELISA 2, ELISA 3 and ELISA 4.

Background

Prior to FASat-Charlie, Chile had two experiences with microsatellites. The first, FASat-Alfa, was launched on August 31, 1995. It did not manage to separate from its mother satellite, the Ukrainian Sich-1, and so the two remain in orbit. The failure was caused by a fault in the pyrotechnic system that allowed the separation and rupture of the spring that joined the two parts, and both are still monitored by NORAD. Three years after the initial failed attempt, the FASat-Bravoit became the first artificial Chilean satellite to orbit the Earth independently. In the third year of life, this satellite became inoperative due to power system failures that stopped its batteries from charging, and it became space junk.

Function and Design

Civil Applications

According to a report carried out by national specialists, around 180 civil applications have been identified for the satellite relating to agriculture: precision agriculture, forestry, land use planning, mapping of urban areas, growth studies and land use, population dynamics, biomass from forestry, forest cadastres, border protection and monitoring of major works or catastrophes. From the captured images, urban growth, connectivity, tourism, forestry, environmental protection and agriculture can be regulated.

Design

FASat-Charlie is a small satellite made of silicon carbide, a material as hard as sapphire and less deformed than steel.

• Mass : 116 kilograms[6]
• Speed : 7.5 kilometres per second .
• Telescope : It has a ground resolution of 1.45 m in panchromatic and 5.8 m in multispectral (visible and NIR spectrum). It delivers around 100 images per day, with a frequency of 3 days in a polar orbit, at a distance of 620 kilometres high.
• Expected operational life : ≥ 5 years[6]

See also

• 2011 in spaceflight
• FASat-Alfa

References

External links

• Astrium

На других языках

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[de] SSOT

SSOT (spanisch Sistema Satelital para la Observación de la Tierra) ist ein chilenischer Erdbeobachtungssatellit. Er wurde am 17. Dezember 2011 vom Centre Spatial Guyanais mit einer Sojus-2.1a-Rakete zusammen mit vier Elisa-Satelliten für das französische Militär und dem französischen Satelliten Pléiades-1A in eine sonnensynchrone Erdumlaufbahn gebracht.[3]

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- [en] SSOT (satellite)

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[es] Sistema Satelital de Observación Terrestre

El Sistema Satelital de Observación Terrestre (SSOT),[1] también conocido como FASat-Charlie,[2] es un satélite chileno, que fue lanzado el 16 de diciembre de 2011,[3] y se incluye dentro de las obras que celebran el bicentenario del país.[1] El objetivo del SSOT es contar con un sistema satelital orientado a la observación del territorio, que sea de proyección global y basado en la cooperación internacional.

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