STSS-ATRR

 2009-023A

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Space Tracking and Surveillance System (STSS) Advanced Technology Risk Reduction satellite, formerly the STSS Block 2010 program. The classified MDA satellite will explore "alternate technology" for the STSS. The MDA used NASA to broker launch services with ULA.

The satellite was transferred from MDA to Air Force Space Command in Dec 2010 for use in the space situational awareness network.

Launch by ULA Delta II 7920-10C Azimuth 196 deg.

STSS
Date	Time	Event	Orbit
2009 May 5	2024:26	Launch by Delta 7920	V SLC2W
		T+1:04 SRM 1-6 out
		T+1:05 SRM 7-9 on
		T+1:26 SRM 1-6 sep
		T+2:10 SRM 7-9 out
		T+2:11 SRM 7-9 sep
		T+4:23 MECO
		T+4:31 Stage 1 sep
		T+4:36 SES-1
		T+4:41 fairing sep
	2034:30	T+10:04 SECO-1 over 123.8W 11.5N? at 165.9km	165 x 871 x 98.9?
	2117:18	T+52:52 SES-2 over 44.5E 26.5S?
	2117:39	T+53:13 SECO-2 over 43.5E 24.4S?
	2122:26	T+58:00 Stage 2 sep over 40.3E 8.8S?
		T+58:00 Stage 2 retro
		T+58:42 Stage 2 retro cutoff
	2154:26	T+1:30:00 SES-3 evasive, 5s over 120W 77N
		T+1:30:05 SECO-3
	2207:46	T+1:43:20 SES-4 depletion over Hawaii, 1:34 over 148W 30N
	2209:20	T+1:44:54 SECO-4	180 x 889 x 112.78 over 150W 27N?
			250? x 900? x 112.6
			101.5 792 x 872 x 99.1 (UN)
2009 May 8			866 x 879 x 98.9