Navstar 21

 1990-068A

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Navstar SVN 21 (PRN 21, USA 63) was the 8th Block II GPS launch. It went to plane E-2.

Navstar 21
Date	Time	Event	Orbit
1990 Aug 2	0539:00	Launch by Delta II 6925	CC LC17A
		T+0:56 SRM 1-3,7-9 out
		T+1:01 SRM 4-6 on
		T+1:02 SRM 1-3 sep
		T+1:03 SRM 7-9 sep
		T+1:57 SRM 4-6 off
		T+2:02 SRM 4-6 sep
		T+4:25 MECO
		T+4:31 VECO
		T+4:33 Stage 1 sep
	0543	Stage 2 TIG (T+4:38)
		Fairing sep (T+4:50)
	0550	SECO-1 (T+11:37)	186 x 186? x 35.66?
		T+20:55 spinup
	0559	T+20:58 Delta sep
	0600	T+21:35 TES
	0602	T+23:02 TECO	355.32 171 x 20308 x 37.7
	0603	T+24:55 Stage 3 sep
	0603	T+24:57 despin weights
	0644?	SES-3 depletion
	0644	St 2 peri	T+1:05 91.78 185 x 538 x 30.1 (Delta)
	1912		356.67 156 x 20407 x 37.7
1990 Aug 4	0252?	Star 37XFP burn
1990 Aug 6			722.71 19931 x 20672 x 54.71
1990 Aug 16			718.03 19931 x 20435 x 54.70
1990 Aug 24		Operational
1997 Feb 1		Operating at slot E-2
2002 Mar 5			717.96 19698 x 20640 x 56.1