Progress 20

 1984-038A

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Progress 7K-TG (11F615A15) No. 121 was launched on 1984 Apr 15 and announced as Progress-20. According to V. Agapov the launch vehicle was a Soyuz-U2, the first use of this uprated variant for a Progress launch.

Progress-20
Date	Time	Event	Orbit
1984 Apr 15	0612:53	Launch by Soyuz-U2	KB
1984 Apr 15	0755		88.84 181 x 253 x 51.6
	0930		88.95 186 x 260 x 51.6
1984 Apr 16			88.75 182 x 243 x 51.6
1984 Apr 16	1430		89.59 233 x 276 x 51.6
1984 Apr 17	0700		89.57 237 x 270 x 51.59
	0922	Docked with Salyut-7
1984 May 6	1746	Undocked from Salyut-7
1984 May 7	0032:51	Deorbited