The core module of Russia's new space station was placed in an initial orbit of 172 x 301 km. It was established in its operational orbit on 6 March. It passed just 10 km from Salyut 7 on 8 March. First use of the geosynchronous Luch relay sattelite for communications with the station was on 29 March. Equipment launched with the core module included:

- Splav-2 crystal growth facility
- Zona zone melt facility
- Kashtan electrophoresis unit
- Bulgarian Rozhen photometer
- Spektr-256 and MKS-M spectrometers
- Pion-M multipurpose physics unit (41 kg)
- Biryuza semiconductor materials unit
- -Ruchei electrophoresis installation
- Yantar metal coating equipment
- Mariye magnetic spectrometer
- Korund furnace (136 kg)

Total costs of Mir from February 1986 through return of Soyuz TM-9 in April 1989 were given as 1.471 billion rubles. This sum ncluded Mir, Kvant, all Soyuz and Progress spacecraft, and 2 new modules. As of April 1989 50% of the scientific equipment was inoperable and the interior was cramped due to lack of extension modules. Electric power supply problems were first reported in April 1989 (batteries would not hold charge from panels). Mass 27,300 kg as of January 1990. Complex mass with Kvant-2 65,790 kg; with Kristall, Soyuz TM, and Progress M, 89,990 kg.

Maneuver Summary:

172 km X 294 km orbit to 170 km X 335 km orbit. Delta V: 11 m/s

170 km X 335 km orbit to 210 km X 335 km orbit. Delta V: 11 m/s

210 km X 335 km orbit to 270 km X 340 km orbit. Delta V: 18 m/s

270 km X 340 km orbit to 270 km X 348 km orbit. Delta V: 2 m/s

270 km X 348 km orbit to 324 km X 340 km orbit. Delta V: 17 m/s

322 km X 337 km orbit to 333 km X 342 km orbit. Delta V: 4 m/s

By Progress 25: 332 km X 339 km orbit to 338 km X 358 km orbit. Delta V: 6 m/s

By Progress 25: 337 km X 358 km orbit to 339 km X 360 km orbit. Delta V: 1 m/s

By Progress 25: 338 km X 360 km orbit to 336 km X 343 km orbit. Delta V: 4 m/s

By Progress 26: 335 km X 345 km orbit to 309 km X 345 km orbit. Delta V: 7 m/s

By Progress 26: 309 km X 345 km orbit to 331 km X 344 km orbit. Delta V: 6 m/s

By Progress 26: 331 km X 342 km orbit to 335 km X 343 km orbit. Delta V: 1 m/s

By Progress 26: 335 km X 343 km orbit to 340 km X 355 km orbit. Delta V: 4 m/s

By Progress 26: 340 km X 355 km orbit to 341 km X 359 km orbit. Delta V: 1 m/s

By Progress 26: 340 km X 359 km orbit to 334 km X 340 km orbit. Delta V: 6 m/s

By Progress 26: 333 km X 339 km orbit to 332 km X 335 km orbit. Delta V: 2 m/s

Total Delta V By Progress 26: 34 m/s

By Progress 27: 332 km X 337 km orbit to 332 km X 366 km orbit. Delta V: 8 m/s

By Progress 27: 315 km X 344 km orbit to 329 km X 363 km orbit. Delta V: 9 m/s

By Progress 27: 328 km X 363 km orbit to 342 km X 368 km orbit. Delta V: 5 m/s

By Progress 27: 339 km X 368 km orbit to 346 km X 370 km orbit. Delta V: 2 m/s

Total Delta V By Progress 27: 16 m/s

By Progress 28: 344 km X 369 km orbit to 354 km X 369 km orbit. Delta V: 2 m/s

350 km X 366 km orbit to 344 km X 364 km orbit. Delta V: 1 m/s

By Progress 30: 341 km X 365 km orbit to 312 km X 361 km orbit. Delta V: 9 m/s

By Progress 31: 306 km X 354 km orbit to 298 km X 358 km orbit. Delta V: 3 m/s

By Progress 32: 287 km X 342 km orbit to 326 km X 344 km orbit. Delta V: 11 m/s

By Progress 33: 323 km X 340 km orbit to 334 km X 360 km orbit. Delta V: 8 m/s

By Progress 35: 318 km X 333 km orbit to 330 km X 362 km orbit. Delta V: 11 m/s

By Progress 36: 326 km X 355 km orbit to 348 km X 356 km orbit. Delta V: 6 m/s

Total Delta V from February 19 1986 to June 18 1988: 176 m/s.

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