Kosmos 1511

 1983-117A

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The final Oktan flight was in Nov 1983 to Jan 1984. On Jan 5 the spacecraft apogee was raised to 448 km, much higher than typical. Kosmos-1511 returned to the normal altitude regime a day later.

Kosmos-1511
Date	Time	Event	Orbit
1983 Nov 30	1345	Launch by Soyuz	Plesetsk
	1353	Blok-I sep
1983 Nov 30			89.66 171 x 343 x 67.1
1983 Dec 6			89.29 166 x 312 x 67.1
1983 Dec 7		Orbit raise	89.70 168 x 349 x 67.1
1983 Dec 14			89.06 159 x 296 x 67.1
1983 Dec 14		Orbit raise	89.73 172 x 348 x 67.1
1983 Dec 16		SpK-1 fid
1983 Dec 24			89.09 163 x 295 x 67.1
1983 Dec 25		Orbit raise	89.97 178 x 367 x 67.1
1983 Dec 30			89.73 176 x 346 x 67.1
1983 Dec 30		Lower peri	89.56 167 x 338 x 67.1
1984 Jan 2		SpK-2 fid
1984 Jan 3			89.23 163 x 309 x 67.1
1984 Jan 5		Orbit raise	90.65 164 x 448 x 67.1
1984 Jan 6			90.52 163 x 435 x 67.1
1984 Jan 6		Orbit lower	89.32 162 x 319 x 67.1
1984 Jan 9			89.02 160 x 291 x 67.1
1984 Jan 9		Orbit raise	89.32 170 x 311 x 67.1
1984 Jan 13			89.02 166 x 285 x 67.1
1984 Jan 15
	2109?	Deorbit
	2122?	Entry
	2135?	Landed