Eutelsat 70B

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Eutelsat 70B
Names Eutelsat W5A (pre-launch)
Eutelsat 70B
Mission type Communication
Operator Eutelsat
COSPAR ID 2012-069A[1]
SATCAT № 39020[1]
Mission duration 15 years[2]
Spacecraft properties
Bus Eurostar E3000[2]
Manufacturer EADS Astrium
Launch mass 5,210 kilograms (11,490 lb)[2]
Power 12kW[2]
Start of mission
Launch date 3 December 2012, 20:43 (2012-12-03UTC20:43Z) UTC
Rocket Zenit-3SL
Launch site Odyssey
Contractor Sea Launch
Orbital parameters
Reference system Geocentric
Regime Geostationary
Longitude 70.5° East
Transponders
Band 48[3]
Bandwidth 54 and 72 megahertz[3]
Coverage area Europe
Asia
Africa
South East Asia[3]

Eutelsat 70B is a commercial communications satellite run by Eutelsat. It was launched on 3 December 2012 and is designed to provide telecommunication services for the Middle East, Central Asia, South East Asia and parts of Africa. It will replace Eutelsat 70A, which was previously known as Eutelsat W5. That satellite, which was launched in 2002, currently occupies the same 70.5° E location this satellite is intended for.

Satellite[edit]

Eutelsat 70B was built by EADS Astrium based on their Eurostar E-3000 bus. It contains 48 Ku band transponders in four distinct beams covering Europe, Asia, Africa and South East Asia. The transponders have bandwidths of 54 MHz and 72 MHz and will operate on the frequencies 10.95 to 11.70 GHz, 11.20 to 11.45 GHz, 11.45 to 11.70 GHz and 12.5 to 12.75 GHz.[3]

The craft is 7 m high with a width of 8m due to the antennas. It is 30m long with solar panels extended.[2]

One of the functions of the satellite will be for secure government communications in Central Asia.[3]

The satellite was originally known as Eutelsat W5A until March 2012 when Eutelsat changed their satellite naming schedule. Eutelsat 70A, previously known as Eutelsat W5, will move to a different location once its replacement is operational, which is expected to be mid January 2013.[4][5]

Launch[edit]

Eutelsat 70B was launched on 3 December 2012 by Sealaunch using a Zenit 3SL rocket with a Block DM-SL upper stage. It launched from the floating platform Ocean Odyssey at 154°W at Kiritimati in the Pacific Ocean. It was launched at 20:43 UTC and the satellite separated at 21:50 UTC and was placed into geosynchronous transfer orbit. It was given the international designator 2012-069A and the United States Space Command assigned it the Satellite Catalog Number 39020.[1][6]

The launch was delayed for 24 hours as the floating launch pad was delayed arriving at the launch site.[6]

Ocean Odyssey floating launch platform

References[edit]

  1. ^ a b c "2012-069". zarya.info. 2012. Retrieved 2012-12-04. 
  2. ^ a b c d e "Current Mission - EUTELSAT-70B". Sea Launch. 2012-12-03. Retrieved 2012-12-04. 
  3. ^ a b c d e "Eutelsat 70B @ 70.5° E". Eutelsat. undated. Retrieved 2012-12-04. 
  4. ^ "Eutelsat 70B (Eutelsat W5A)". Gunter's Space Page. 2012-12-03. Retrieved 2012-12-04. 
  5. ^ "Successful launch of EUTELSAT 70B satellite by Sea Launch". Eutelsat. 2012-12-04. Retrieved 2012-12-04. 
  6. ^ a b "Sea Launch Orbits Eutelsat-70B Satellite". RIA Novosti. 2012-12-03. Retrieved 2012-12-04. 

External links[edit]