Eutelsat W2

EUTELSAT

Spacecraft n°:

EUTELSAT spacecraft n°: 15

Also called Eutelsat 3F2

Launch data:

Designation	25491 / 98056A
Launch date	05 Oct 1998
Launch site	Ko, ELA-2
Launch vehicle	Ariane-44L (V111)
Mission	Commercial: Communications
Geostationary orbit:
Perigee / Apogee	35770 x 35801 km
Eccentricity	3,68E-04
Inclination	0.05 deg
Period	1436.04 min

Tested at 2°E

Specifications

Prime contractor	Aerospatiale (with DASA, Alenia & SS/L) (Alcatel Space Industries)
Platform	Spacebus-3000B2
Operator	Eutelsat
Mass at launch	2950 kg
Mass in orbit	1810 kg
Dry mass	1375 kg
Dimension	4.6 x 2.5 x 1.8 m
Equipment	24 (+10) Ku-band teansponders
Solar array	2 deployable solar arrays, 29 m span
Stabilization	3-axis
Propulsion	S400
DC power	EOL: 5900 W
Design lifetime	12 years

Location:

Date	Position	Remarks
	16° E
Oct 2009	16.05° E

Beacons: 11.698000 H & 12.50100 H & 11.19900 GHz

Description

The W satellites are designed to provide telecommunications services primarily over Europe (Eutelsat W2, W3 and W5) and communication services over Russia and Africa (W4). W2, W3 and W5 are designed to offer 24 transponders at saturation and W4 is designed to provide 31 transponders at saturation. The W satellites have a minimum operational lifetime of 12 years. The spacecraft are based on the Spacebus-3000B2 platform.

Ku-band

Main transponders	34 (max 24 active at one time)
Backup transponders
Power	90 W
Bandwidth	21 x 36 MHz (9 switchable to steerable beam) 13 x 72 MHz (1 switchable to steerable beam)
Coverage	One fixed beam to cover the entire European continent and the Mediterranean Bassin One steerable beam to cover the Reunion Island
EIRP max	fixed: 50 dBW steerable: 52 dBW
Polarization	linear
Frequencies	uplink: 13.0-13.25 GHz & 13.75-14.5 GHz downlink: 10.95-11.7 GHz & 12.5-12.75 GHz

Transponder frequency chart (GHz)

Horizontal Uplink	Horizontal Downlink	Transponder	Vertical Downlink	Vertical Uplink	Bandwidth (MHz)	Switchable to
	10.99167	B1		14.29167	72
14.29167		B2	10.99167		72
	11.07500	B3		14.37500	72
14.37500		B4	11.07500		72
	11.15833	B5		14.45833	72
14.45833		B6	11.15833		72

13.00100		C1	11.22075		36
	11.24150	C2		13.02175	36
13.04250		C3	11.26225		36
	11.28300	C4		13.06325	36
13.08400		C5	11.30375		36
	11.32450	C6		13.10475	36
13.12550		C7	11.34525		36
	11.36600	C8		13.14625	36
13.16700		C9	11.38675		36
	11.40750	C10		13.18775	36
13.20850		C11	11.42825		36
	11.44900	C12		13.55925	36

13.77141		D1	11.47141		36	Steerable
	11.49216	D2		13.79216	36	Steerable
13.81291		D3	11.51291		36	Steerable
	11.53366	D4		13.83366	36	Steerable
13.85441		D5	11.55441		36	Steerable
	11.57516	D6		13.87516	36	Steerable
13.89591		D7	11.59591		36	Steerable
	11.61666	D8		13.91666	36	Steerable
13.95833		D9	11.65833		72	Steerable
	11.65816	D10		13.95816	36	Steerable

	12.54167	F1		14.04167	72
14.04167		F2	12.54167		72
	12.62500	F3		14.12500	72
14.12500		F4	12.62500		72
	12.70833	F5		14.20833	72
14.20833		F6	12.70833		72

Twenty-four transponders, Europe, North Africa, Middle East.

Ref.: #14, #15, #226 - update: 19.11.11