ECS 4 --> Eutelsat-1 F4

ESA / EUTELSAT

Spacecraft n°:

EUTELSAT spacecraft n°: 4

Launch data:

Designation	18351 / 87078B
Launch date	16 Sep 1987
Launch site	Ko, ELA-1
Launch vehicle	Ariane-3 (V19)
Mission	Communications
Geostationary orbit:

Spacecraft data:

Prime manufacturer	British Aerospace
Platform	ECS-Bus
Operator	ESA / Eutelsat
Mass at launch	1158 kg
Dry Mass	kg
Basic shape
Dimension (m)
Equipment	12 (+2) Ku-band transponders
Solar array	2 deployable solar arrays
Stabilization
Propulsion	Mage-2
DC power
Design lifetime

In inclined orbit since mid-May 1993. Transponders 1, 5, 7, 8, 9, 10, 11 and 12 have failed.

Location

Begin	End	Position
L: 16 Sep 1987	Oct 1988	10°E
25 Oct 1988	Oct 1990	13°E
16 Oct 1990	Oct 1992	7°E
Oct 1992	late-1992	36°E
May 1993	Jan 2000	25.5°E, inclined
Feb 2000	Feb 2000	21.5°E, inclined
Mar 2000		33°E, inclined > 5°

Beacon: 11.44965 GHz

Ref.: #14 - update: 19.11.11