Lunar Orbiter 1

  1966-073A

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Lunar Orbiter I was launched at 1926 on 1966 Aug 10 by Atlas Agena D from Cape Kennedy. The Agena post-retro trajectory missed the moon by about 40000 km. On Aug 11 trouble struck when the Canopus sensor failed to acquire Canopus. The spacecraft attitude was calibrated by using the sensor to detect the Moon instead. Lunar Orbiter I made one mid course correction, at 0000 on Aug 12, and entered lunar orbit at around 1550 on 1966 Aug 14. The initial orbit was 191 x 1867 km x 12.2 deg. The periapsis was lowered on Aug 21 to 56 km, and on Aug 29 to 40 km. Lunar Orbiter I's mission was dedicated to surveying Apollo landing sites.  The spacecraft was deorbited at 1225 on 1966 Oct 29 and impacted the surface an hour later.

Lunar Orbiter I
Date	Time	Event	Orbit
1966 Aug 10	1926:00	Launch by Atlas Agena D on az. 99.9 deg	CK LC13
	1928:08	T+2:08 BECO
	1930:51	T+4:51 SECO
	1931:12	T+5:12 VECO
	1931:14	T+5:14 Fairing sep
	1931:16	T+5:16 Atlas 5801 sep	-4091 x 182
	1932:09	T+6:09 Agena 6630 burn 1, 2:34
	1934:43	T+8:43 Agena MECO-1	88.3 189 x 202 x 29.6
	2002:34	T+36:34 Agena burn 2, 1:28
	2004:02	T+38:02 Agena MECO	194 x 348524 x 29.6
	2006:47s	T+40:47 Agena sep
		T+49:43s LO solar panels deploy	196 x 345551 x 29.6
		T+51:08 Agena retro
1966 Aug 11	0214	Canopus sensor failed
1966 Aug 12	0000	TCM T+28h 32s 37.8m/s
1966 Aug 14	1532:33	Begin LO burn 579s 790.0m/s
1966 Aug 14	1542:52	LOI	189 x 1867 x 12.15
1966 Aug 15		Calibration film readout
1966 Aug 18	1212	Begin first photo sequence
	1950	Readout first photo sequence
1966 Aug 21			205 x 1845 x 12.3
1966 Aug 21	0949:58	OTM-1 Lower orbit 23s 40m/s	56 x 1853 x 12.05
1966 Aug 25	1601:29	OTM-2 Lower orbit 3s 5.4m/s	40 x 1817 x 12.0
1966 Aug 29		Photo coverage complete
1966 Aug 30		Readout of photos
1966 Sep 11			30 x 1832 x 12.2
1966 Sep 14		Readout of photos completed
		Extended mission
		Special tests
1966 Sep 17		Extended mission operations
1966 Oct 6		Stanford experiment
1966 Oct 7		Extended mission operations
1966 Oct 15		Commanding error, pitch commands
1966 Oct 16		V/H sensor tests
1966 Oct 19		Extended mission operations
1966 Oct 27		Special tests for mission 2 training
1966 Oct 29	1225:49	Deorbit burn 94s 0.1688 km/s, Oxid. depletion
	1227:06	At apolune
	1227:45	Valves closed ater 115.7s, 6.4m/s
	1246:26	depletion burn test, 2.7 m/s	-735 x 1831 x 12.2?
	1249:26	engine off
	1330	Impact farside

Payload:

• Cameras