Intelsat 5A

Part of the Intelsat program

The Intelsat 5A series is very similar to the Intelsat 5 series. Modifications include a larger communications payload with internal weight savings to accommodate the additional mass. The 5A series (F1-F6) is also known as Intelsat 5 (F10-F15).

Spacecraft
3-axis stabilized to 0.4 deg with momentum wheels. Hydrazine propulsion system. Passive thermal control. Dual solar arrays provide 1800 W (BOL). Nickel hydrogen batteries.

Payload
26 C-Band and 6 Ku-Band transponders. 15000 voice circuits and 2 TV channels.

Country of Origin	International
Customer/User	ITSO
Manufacturer(s)	Ford Aerospace
Size	1.6 x 2.1 x 2.8 m box, 15.9 m solar array span
Orbit	F10: GEO over Pacific / F11: GEO over Indian Ocean / F12: GEO over Atlantic / F13: GEO over Atlantic / F15: GEO over Indian Ocean
Design Life	9 years

Launch Facts

Name	Int'l Desig.	Date	Site	Vehicle	Orbit	Mass(kg)
Notes
Intelsat 5A F-10	1985-025A	3/22/85	ESMC	Atlas Centaur	GEO	2013
Intelsat 5A F-11	1985-055A	6/30/85	ESMC	Atlas Centaur	GEO	1098
Intelsat 5A F-12	1985-087A	9/29/85	ESMC	Atlas Centaur	GEO	1096
Telephone communications; 31 deg E
Intelsat 5A F-14	none	5/30/86	Kourou	Ariane 2	FTO
3rd stage failed to ignite; destroyed by range safety
Intelsat 5A F-13	1988-040A	5/17/88	Kourou	Ariane 2	GEO	2013
Replaced Intelsat 5 F-3; 53 deg W
Intelsat 5A F-15	1989-006A	1/27/89	Kourou	Ariane 2	GEO	1977
International communications; 18 deg W