Kosmos 548

 1973-008A

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A Zenit-4M (11F691) mission was launched in Feb 1973 from Plesetsk. Kosmos-548 stayed in orbit for 13 days. Object D, jettisoned in low orbit on Feb 20, is probably the engine; objects E and F in higher apogees may be retro motor covers, although RAE labels F as the engine.

Kosmos-548
Date	Time	Event	Orbit
1973 Feb 8	1315:00	Launch by 11A57	PL
	1319	Blok-I burn
	1323	Blok-I sep
1973 Feb 8	1859		89.59 203 x 305 x 65.4
1973 Feb 9	0500		89.55 205 x 300 x 65.38 (RAE)
1973 Feb 10	0219		89.54 204 x 298 x 65.4
		Lower orbit
	0945		89.13 170 x 292 x 65.4
1973 Feb 12	2110		89.06 168 x 287 x 65.4
		Adjust orbit
1973 Feb 13	0306		89.17 174 x 292 x 65.4
	0435		89.37 184 x 302 x 65.4
1973 Feb 14	0230		89.37 171 x 317 x 65.39 (RAE)
1973 Feb 15	0415		89.34 169 x 313 x 65.4
		Adjust orbit
	1441		89.37 172 x 313 x 65.4
1973 Feb 18	0643		89.29 172 x 306 x 65.4
		Raise orbit
	0942		89.44 176 x 317 x 65.4
1973 Feb 20		Engine sep (08F)
1973 Feb 21	0316		89.38 177 x 309 x 65.4
	0610?	Retrofire
	0620?	PO sep
	0625?	Entry
	0641?	Landed