Astra 5A was one of the

Astra Astra (Latin for "stars") may refer to: People * Astra (name) Places * Astra, Chubut, a village in Argentina * Astra (Isauria), a town of ancient Isauria, now in Turkey * Astra, one suggested name for a hypothetical fifth planet that became t ...

communications satellite A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a Transponder (satellite communications), transponder; it creates a communication channel between a source transmitter and a Rad ...

s owned and operated by SES at the Astra 31.5°E. Launched in 1997 to the 5° East position by

NSAB In Mandaeism, Nṣab () is an uthra (angel or guardian). He is also called Nṣab Rba ("the Great Nṣab") or Nṣab Ziwa ("the Radiant Nṣab" or "Splendid Plant"). Nṣab and Anan-Nṣab ('cloud of Nṣab', a female consort) are frequently me ...

(Nordiska Satelit AB) (later SES Sirius, and now a non-autonomous part of SES) as Sirius 2, operation of the satellite was transferred to SES in April 2008 and the craft renamed and moved to 31.5° East to open up a new orbital position for the company for the development of markets in

Central and Eastern Europe Central and Eastern Europe is a geopolitical term encompassing the countries in Baltic region, Northeast Europe (primarily the Baltic states, Baltics), Central Europe (primarily the Visegrád Group), Eastern Europe, and Southeast Europe (primaril ...

and the

Middle East The Middle East (term originally coined in English language) is a geopolitical region encompassing the Arabian Peninsula, the Levant, Turkey, Egypt, Iran, and Iraq. The term came into widespread usage by the United Kingdom and western Eur ...

. Astra 5A failed in orbit in 2009.

Sirius 2 / GE-1E

Sirius 2 is a 32

transponder In telecommunications, a transponder is a device that, upon receiving a signal, emits a different signal in response. The term is a blend of ''transmitter'' and ''responder''. In air navigation or radio frequency identification, a flight trans ...

satellite, used for direct-to-home (DTH) transmissions as well as video and data communication services. Sirius 2 has two DTH beams, each with 13 transponders used for transmission of TV channels to homes equipped with parabolic antennas. One of the beams transmits to the Nordic area and the other towards central and

southern Europe Southern Europe is also known as Mediterranean Europe, as its geography is marked by the Mediterranean Sea. Definitions of southern Europe include some or all of these countries and regions: Albania, Andorra, Bosnia and Herzegovina, Bulgaria, C ...

GE AMERICOM SES Americom was a major commercial communications satellite, satellite operator of North American geosynchronous satellites based in the United States. The company started as RCA Americom in 1975 before being bought by General Electric in 1986 ...

, later SES Americom, operates 13 of the transponders in the European beam, originally under the name GE-1E. Sirius 2 has a third beam, for video and data communications. It consists of six 36 MHz transponders and covers northern and central Europe.

Market

The Astra 5A satellite provided two broadcast beams, of horizontal and vertical polarisation, across two

footprint Footprints are the impressions or images left behind by a person walking or running. Hoofprints and pawprints are those left by animals with hooves or paws rather than feet, while "shoeprints" is the specific term for prints made by shoes. The ...

s, called the CEE (Central and Eastern European) beam and the PE (pan-European) beam. The CEE beam provides reception on a 60 cm dish from Poland to northern Turkey, and the

Balkans The Balkans ( , ), corresponding partially with the Balkan Peninsula, is a geographical area in southeastern Europe with various geographical and historical definitions. The region takes its name from the Balkan Mountains that stretch throug ...

to the

Black Sea The Black Sea is a marginal sea, marginal Mediterranean sea (oceanography), mediterranean sea lying between Europe and Asia, east of the Balkans, south of the East European Plain, west of the Caucasus, and north of Anatolia. It is bound ...

, while the PE beam extends 60 cm coverage from

Tunisia Tunisia, officially the Republic of Tunisia, is a country in the Maghreb region of North Africa. It is bordered by Algeria to the west and southwest, Libya to the southeast, and the Mediterranean Sea to the north and east. Tunisia also shares m ...

to the

Urals The Ural Mountains ( ),; , ; , or simply the Urals, are a mountain range in Eurasia that runs north–south mostly through Russia, from the coast of the Arctic Ocean to the river Ural (river), Ural and northwestern Kazakhstan.

and from the

Baltic states The Baltic states or the Baltic countries is a geopolitical term encompassing Estonia, Latvia, and Lithuania. All three countries are members of NATO, the European Union, the Eurozone, and the OECD. The three sovereign states on the eastern co ...

Israel Israel, officially the State of Israel, is a country in West Asia. It Borders of Israel, shares borders with Lebanon to the north, Syria to the north-east, Jordan to the east, Egypt to the south-west, and the Mediterranean Sea to the west. Isr ...

. Countries covered include

Armenia Armenia, officially the Republic of Armenia, is a landlocked country in the Armenian Highlands of West Asia. It is a part of the Caucasus region and is bordered by Turkey to the west, Georgia (country), Georgia to the north and Azerbaijan to ...

Azerbaijan Azerbaijan, officially the Republic of Azerbaijan, is a Boundaries between the continents, transcontinental and landlocked country at the boundary of West Asia and Eastern Europe. It is a part of the South Caucasus region and is bounded by ...

Belarus Belarus, officially the Republic of Belarus, is a landlocked country in Eastern Europe. It is bordered by Russia to the east and northeast, Ukraine to the south, Poland to the west, and Lithuania and Latvia to the northwest. Belarus spans an a ...

Bosnia Bosnia and Herzegovina, sometimes known as Bosnia-Herzegovina and informally as Bosnia, is a country in Southeast Europe. Situated on the Balkans, Balkan Peninsula, it borders Serbia to the east, Montenegro to the southeast, and Croatia to th ...

Bulgaria Bulgaria, officially the Republic of Bulgaria, is a country in Southeast Europe. It is situated on the eastern portion of the Balkans directly south of the Danube river and west of the Black Sea. Bulgaria is bordered by Greece and Turkey t ...

Czech Republic The Czech Republic, also known as Czechia, and historically known as Bohemia, is a landlocked country in Central Europe. The country is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the south ...

Georgia Georgia most commonly refers to: * Georgia (country), a country in the South Caucasus * Georgia (U.S. state), a state in the southeastern United States Georgia may also refer to: People and fictional characters * Georgia (name), a list of pe ...

Hungary Hungary is a landlocked country in Central Europe. Spanning much of the Pannonian Basin, Carpathian Basin, it is bordered by Slovakia to the north, Ukraine to the northeast, Romania to the east and southeast, Serbia to the south, Croatia and ...

Iran Iran, officially the Islamic Republic of Iran (IRI) and also known as Persia, is a country in West Asia. It borders Iraq to the west, Turkey, Azerbaijan, and Armenia to the northwest, the Caspian Sea to the north, Turkmenistan to the nort ...

Jordan Jordan, officially the Hashemite Kingdom of Jordan, is a country in the Southern Levant region of West Asia. Jordan is bordered by Syria to the north, Iraq to the east, Saudi Arabia to the south, and Israel and the occupied Palestinian ter ...

North Macedonia North Macedonia, officially the Republic of North Macedonia, is a landlocked country in Southeast Europe. It shares land borders with Greece to the south, Albania to the west, Bulgaria to the east, Kosovo to the northwest and Serbia to the n ...

Moldova Moldova, officially the Republic of Moldova, is a Landlocked country, landlocked country in Eastern Europe, with an area of and population of 2.42 million. Moldova is bordered by Romania to the west and Ukraine to the north, east, and south. ...

, Poland,

Romania Romania is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern and Southeast Europe. It borders Ukraine to the north and east, Hungary to the west, Serbia to the southwest, Bulgaria to the south, Moldova to ...

, Russia,

Serbia , image_flag = Flag of Serbia.svg , national_motto = , image_coat = Coat of arms of Serbia.svg , national_anthem = () , image_map = , map_caption = Location of Serbia (gree ...

Slovakia Slovakia, officially the Slovak Republic, is a landlocked country in Central Europe. It is bordered by Poland to the north, Ukraine to the east, Hungary to the south, Austria to the west, and the Czech Republic to the northwest. Slovakia's m ...

Turkey Turkey, officially the Republic of Türkiye, is a country mainly located in Anatolia in West Asia, with a relatively small part called East Thrace in Southeast Europe. It borders the Black Sea to the north; Georgia (country), Georgia, Armen ...

, and

Ukraine Ukraine is a country in Eastern Europe. It is the List of European countries by area, second-largest country in Europe after Russia, which Russia–Ukraine border, borders it to the east and northeast. Ukraine also borders Belarus to the nor ...

Demise of satellite

On 16 January 2009, Astra 5A "experienced a technical anomaly leading to the end of the spacecraft's mission". All traffic ceased, with much of it (especially channels for German cable service,

Kabel Deutschland Vodafone Deutschland GmbH is the largest cable television operator in Germany. Kabel Deutschland was subject to a hostile takeover bid by the British Vodafone Group in September 2013; the deal was approved in December 2013 and finalised on 29 J ...

) transferred to Astra 28.5° East. Transfer of services to

Astra 1D Astra 1D is a geostationary communications satellite launched in 1994 by the Société Européenne des Satellites ( SES). , the craft remains in service for occasional use. Astra 1D was the fourth, and under original plans, last Astra communic ...

was not practical because this satellite, although effectively co-located with Astra 5A, was in an

inclined orbit A satellite is said to occupy an inclined orbit around Earth if the orbit exhibits an angle other than 0° to the equatorial plane. This angle is called the orbit's inclination. A planet is said to have an inclined orbit around the Sun if it has a ...

and usable only for TV contribution services and other intermittent use. In March 2009, SES Astra announced that in April 2009, the Astra 2C satellite was to be moved from the 28.2° East position to Astra 31.5°E to temporarily take over Astra 5A's mission until Astra 3B was launched to Astra 23.5°E, at which time another craft currently there could be released to 31.5°E. The move of Astra 2C was started in May 2009 and completed on 11 May 2009. In 2010,

Astra 3B Astra 3B is one of the Astra communications satellites owned and operated by SES, launched in 2010 to the Astra 23.5°E orbital position providing digital television and radio for direct-to-home (DTH), and the AstraConnect two-way satellit ...

came into service at Astra 23.5°E and

Astra 1G Astra 1G was one of the Astra communications satellites owned and operated by SES. History SES ordered its Hughes 601HP satellite, in 1994 for Astra 1G. Astra 1G was retired to a graveyard orbit in 2023.Astra 19.2°E in September 2010. In December 2013, it is expected that a new satellite, Astra 5B will be launched to the Astra 31.5°E position to permanently take over all broadcasting from this position. After the loss of Astra 5A's

Sun sensor A Sun sensor is a navigational instrument used by spacecraft to detect the position of the Sun. Sun sensors are used for Spacecraft attitude control, attitude control, solar array pointing, gyroscope, gyro updating, and safe mode (spacecraft), fai ...

s (used to orient towards the

Sun The Sun is the star at the centre of the Solar System. It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light a ...

to charge the craft's batteries) the batteries quickly depleted rendering it impossible to send control information to the satellite. Collisions were a possibility, with Intelsat 802 stated the most probable. In April 2009, SES Astra said that they had managed to regain control of the satellite and that it had been moved out of

geostationary orbit A geostationary orbit, also referred to as a geosynchronous equatorial orbit''Geostationary orbit'' and ''Geosynchronous (equatorial) orbit'' are used somewhat interchangeably in sources. (GEO), is a circular orbit, circular geosynchronous or ...

, into a higher one, presumably a

graveyard orbit A graveyard orbit, also called a junk orbit or disposal orbit, is an Orbit (physics), orbit that lies away from common operational orbits. One significant graveyard orbit is a supersynchronous orbit well beyond geosynchronous orbit. Some satellit ...

References

External links

Official SES website

Astra 31.5°E orbital position Website

Astra 5B CEE beam footprint on SatBeams

Astra 5B Wide BSS beam footprint on SatBeams

{{Orbital launches in 1997 Astra satellites Communications satellites in geostationary orbit Spacecraft launched in 1997 1997 in Luxembourg Satellites of Luxembourg Satellites using the Spacebus bus

Sirius 2 / GE-1E

Market

Demise of satellite

See also

References

External links