OV1-09/10

 1966-111A

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OV1-9 was a biohazard radiation satellite. 462 kg launch, 356 kg PM and 106 kg satellite.

The OV1-9/10 launch was the first to go to a normal polar orbit rather than the westward path used by the early OV1s from the same pad.

OV1-9
Date	Time	Event	Orbit
1966 Dec 11	2109:57	Launch by Atlas D	V ABRES-B3
	2112:07	T+2:10 BECO	-6102 x 149 x 108.4
	2115:02	T+5:05 SECO	-2440? x 650? x 100.2
	2115	OV1 Pod doors open
	2115:16	T+5:19.3 OV1-9 eject 270 km	-2676 x 912 x 97.86
	2115:17	T+5:20.2 OV1-10 eject
	2115:20	T+5:23 VECO 274 km	-2430? x 720? x 98?
	2125?	OV1-9P burn
	2126?	OV1-9P burnout
	2127?	OV1-9P sep
			142.3 473 x 4824 x 99.1

1966-111B

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OV1-10 carried gravity gradient experiments and radiation detectors. It was placed in a noon-midnight sun-synchronous orbit and deployed two 15m booms, two 9.8m booms and two 5.8m booms. The stabilization was only partly successful.

Mass was 124 kg plus a 465 kg PM. Launch was to a 101.4 deg suborbital trajectory; a PM yaw burn at equator crossing lowered inclination to 93.4 deg.

OV1-10
Date	Time	Event	Orbit
1966 Dec 11	2109:57	Launch by Atlas D	V
	2112	BECO
	2114	SECO
	2115	OV1 Pod doors open
	2115	OV1-9, OV1-10 eject
	2115:17	T+5:20.2 OV1-10 eject 271 km	-2364 x 608 x 101.37
	2125?	OV1-10P burn
	2126?	OV1-10P burnout
	2127?	OV1-10P sep
			98.9 641 x 769 x 93.4
1967 Jun		End of transmissions

Payload:

• Magnetometer

• Vertistat Gravity gradient booms

• Thermal coatings

• Heavy primary cosmic ray telescope

• Geocoronal Ly alpha all sky photometer