SES-2

 2011-049B

---

SES-2 and SES-3 are Orbital Star 2-4. Former AMC 1R.

SES Americom comms with USAF 3Girs (AIRSS) infrared sensor, a backup alternative to SBIRS, built by SAIC. The sensor flies as part of the Commerically Hosted IR Payload Flight Demo Program (CHIRP).

The spacecraft was procured by SES Satellite Leasing (UK) and operated by SES World Skies/Princeton; it was registered with the UN by the United States.

Ariane 561
Date	Time	Event	Orbit
2011 Sep 21	2138	Launch by Ariane 5 ECA	CSG ELA3
		T+2:14 EAP sep, 69 km
		T+3:01 Fairing sep, 107 km
		T+8:52 EPC MECO, 187 km
		T+8:58 EPC sep, 187 km	-1009 x 187 x 7.24
	2147	T+9:02 ESC-A burn
	2203	T+24:55 ESC-A MECO, 633km
	2205	T+27:14 Arabsat sep
	2212	T+34:31 Sylda sep
	2213	T+35:46 SES-2 sep
		T+47:53 ESC-A passivation
2013 Dec		CHIRP decomissioned due to budget cuts

Payload:

• Ku-band, 24 transponders

• C-band, 24 transponders

• 3Girs Third Generation IR Surveillance sensor, four IR telescopes each with a 2000 x 2000 pixel detector. CHIRP Commerically Hosted IR Payload, 2000 x 2000 pixel SAIC IR camera to view missile launches. (SAMSO/LA)