The pocket almanac of essential facts : everything you need to know

 https://welib.org/md5/48857a1d320feb08c32e1f66c0dc86ed

People: June 1,1992

 https://welib.org/md5/04068a430fc4a0449f34299c76f3549f

Navstar 4

 1978-112A

---

Navstar 4 was launched into the C plane in Dec 1978, becoming operational a month later. 

Navstar 4
Date	Time	Event	Orbit
1978 Dec 11	0359	Launch by Atlas F/SVS	V SLC3
		T+2:04 Booster sep
		T+5:21 SECO
	0405	T+6:00? Atlas sep	-2622 x 172 (nominal)
	0405	T+6:21? SVS burn 1 42s?
	0406	T+7:03? burnout	36? x 172? x 63.1
		T+7:04? sep
		T+7:05? SVS burn 2	163 x 20144
	0406	T+7:47? burnout
	0410	SVS-2 sep
1978 Dec 13	1200?	Star 27 burn
1978 Dec			722.4 20267 x 20316 x 63.3
1978 Dec			720.1 20182 x 20288 x 63.3
1978 Dec			717.9 20165 x 20199 x 63.2
1978 Dec 14		Nav system on
1979 Jan 8		Operational
1986 Oct 27		end of operational nav use