Magsat

 1979-094A

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Applications Explorer Mission C was the Global Magnetic Survey Mission, or Magsat. The main spacecraft was a cylinder with four solar arrays; a special optical system was used at the end of the magnetometer boom to correlate magnetometer position with the star tracker on the main bus. Magsat was launched on 1979 Oct 30 at 1416 by Scout G-1 from Vandenberg. At 1426 it was inserted into a 93.8 min, 355 x 562 km x 96.8 deg orbit. Magsat transmitted until it reentered on 1980 Jun 11 at 1930 over the Norwegian Sea.

Magsat
Date	Time	Event	Orbit
1979 Oct 30	1416	Launch by Scout G-1	V SLC5
		T+1:23 St 1 burnout
		T+1:28 St 1 sep
		T+1:35 St 2 burn
		T+2:14 St 2 burnout
		T+2:35 Fairing
		T+2:36 St 2 sep
		T+2:37 St 3 burn
		T+3:10 St 3 burnout
		T+9:49 Spinup
	1426	T+10:06 St 3 sep
	1426	T+10:52	Stage 4 burn 33s
	1427	T+11:25 Stage 4 burnout
	1428?	Stage 4 sep	355 x 562 x 96.8
	1429?	Yoyo weights release from Magsat
1979 Nov 1		Deploy magnetometer boom
1979 Nov 1		Deploy aerotrim boom to 7m
1979 Nov 3		Begin science ops
1979 Nov	Retract aerotrim to 4.5m
1979 Nov 16		93.60 351 x 550 x 96.8
1980 Jan 17		92.99 338 x 503 x 96.8
1980 May 10		91.06 280 x 372 x 96.8
1980 Jun 11	1930	Reentered