Nimbus 7

 1978-098A

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The final Nimbus satellite was Nimbus G, renamed Nimbus 7 on acheiving orbit. Launch by Delta 2910 on 1978 Oct 24 inserted the satellite in a 943 x 953 km x 99.3 deg orbit, from which it operated until it was decommissioned on 1993 Dec 28, over 15 years after launch. This Nimbus included several instruments to study the effects of human pollution of the atmosphere, including the first TOMS (Total Ozone Mapping Spectrometer) and the SAM (Stratospheric Aerosol Measurement) experiment.

Nimbus 7
Date	Time	Event	Orbit
1978 Oct 24	0815	Launch by Delta 2910	V SLC2W
		T+0:38 SRM 1-3 out
		T+0:39 SRM 4-9 on
		T+1:17 SRM 4-9 out
		T+1:27 SRM 1-9 sep
		T+3:48 MECO
		T+3:55 Thor sep
	0819	T+4:01 SES-1
	0819	T+4:37 Fairing
	0823	T+8:56 SECO-1 166 km
	0911	T+56:38 SES-2 957 km
	0911	T+56:50 SECO-2, at 31 deg S
	0930	T+1:15:40 Delta sep, retro
			943 x 953 x 99.3
	0944	T+1:29:10 Delta tumble
1978 Nov 26			104.05 944 x 956 x 99.3
1989 Nov 1			104.10 945 x 958 x 99.2
1993 Dec 28		end of ops