NATO 4A

 1991-001A

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The NATO IV satellites were built by British Aerospace using the ECS/Skynet 4 bus for the NATO Communications and Information Systems Agency (NACISA).

NATO IVA
Date	Time	Event	Orbit
1991 Jan 8	0053:01	Launch by Delta II 7925	CC LC17B
		T+1:03 SRM 1-6 off
		T+1:06 SRM 1-6 sep
		T+2:09 SRM 7-9 off
		T+2:12 SRM 7-9 sep
		T+4:20? MECO
		T+4:28 St 1 sep
		T+4:34 Delta stage 2 burn
	0103	T+10:41 Delta SECO-1	168? x 2490? x 28.5?
	0117	T+24:26 Delta SES-2
	0117	Delta SECO-2	750? x 2720? x 26.5?
	0118?	Delta sep
	0119	TES
	0121	T+28:05 TECO
	0123	T+29:58 Stage 3 sep	635.84 754 x 35477 x 25.95
	0200?	SES-3 depletion
1991 Jan 8		Delta SECO-3 orbit	121.58 783 x 2719 x 18.5
1991 Jan 10	0040?	Star 30E AKM, GEO
1991 Jan 10			1409.51 34914 x 35614 x 4.2 GEO 177.4E+6.8E
1991 Mar 12			1410.81 34917 x 35663 x 4.1 GEO 142.6W+6.6E
1991 Oct 26			1436.12 35776 x 35797 x 3.7 GEO 17.8W
1994 Mar 24			1436.09 35775 x 35797 x 2.6 GEO 17.8W
1998 Sep 2			1436.10 35777 x 35795 x 2.3 GEO 17.7W
1999 Jun 15			1436.12 35773 x 35800 x 2.5 GEO 17.8W
2003 Sep 6			1436.09 35775 x 35797 x 4.7 GEO 17.7W
2006 Jul 30			1436.02 35770 x 35799 x 6.8 GEO 16.8W
2007 Aug 14			1436.13 35777 x 35796 x 7.6 GEO 17.6W