Eutelsat 8 West B


Eutelsat 8 West B is a geostationary communications satellite. Operated by Eutelsat, it provides direct-to-home (DTH) broadcasting services from geostationary orbit. The satellite is part of Eutelsat's constellation at a longitude of 13° East. Eutelsat announced the order of a new Spacebus-4000C3 satellite bus from Thales Alenia Space in October 2012.

Eutelsat 8 West B
NamesNilesat 104B
Mission typeCommunications
COSPAR ID2015-039B
SATCAT no.40875
Mission duration15 years (planned)
7 years, 1 month, 13 days (elapsed)
Spacecraft properties
SpacecraftEutelsat 8 West B
Spacecraft typeSpacebus
ManufacturerThales Alenia Space
Launch mass5,782 kg (12,747 lb)
Start of mission
Launch date20 August 2015, 20:34:08 UTC
RocketAriane 5ECA (VA255)
Launch siteCentre Spatial Guyanais, ELA-3
Entered serviceOctober 2015
Orbital parameters
Reference systemGeocentric orbit
RegimeGeostationary orbit
Longitude8° West
Band50 transponders:
10 C-band
40 Ku-band
Coverage areaSouth America, Africa, Middle East

Satellite descriptionEdit

Eutelsat 8 West B is a 5,782 kg (12,747 lb) satellite with a design life of 15 years. It is equipped with an S400-12 apogee motor which was used for initial orbit-raising manoeuvres and an S10-18 engine for station keeping burns.[1] The spacecraft has 10 C-band and 40 Ku-band transponders.[2]


Eutelsat 8 West B was launched on the Ariane 5ECA launch vehiclen from Centre Spatial Guyanais at the Kourou in French Guiana. Liftoff occurred at 20:34:08 UTC on 20 August 2015,[3] with the launch vehicle successfully injecting its payload into geosynchronous transfer orbit (GTO). The launch was conducted by Arianespace.


Following launch, the satellite Eutelsat 8 West B used its apogee motor to raise itself into geostationary orbit, positioning itself at a longitude of 13° East. Capacity leased by Nilesat is marketed as Nilesat 104B.[2]


  1. ^ "Hot Bird 6 / 2002 – 038A". Spacecraft Propulsion Heritage. EADS Astrium. Retrieved 4 October 2013.
  2. ^ a b Krebs, Gunter (5 December 2019). "Eutelsat 8 West B (Nilesat 104B)". Gunter's Space Page. Retrieved 16 April 2021.
  3. ^ McDowell, Jonathan (14 March 2021). "Launch Log". Jonathan's Space Page. Retrieved 16 April 2021.

External linksEdit

  • TrackSat
  • Information about this satellite