DS-MO satellite Credit - © Mark Wade

Used in development of aerodynamic systems for stabilization and orientation of spacecraft. Also carried military optical equipment experiments.

The spacecraft was known as the "space arrow" due to its extended aerodynamic skirt stabilizer. This was the first spacecraft to use aerodynamic attitude control. It was also the only DS-series satellite to be equipped with attitude control.

Typical orbit: 247 km x 305 km at 48 degrees inclination. Mass: 375 kg (826 lb). Associated Launch Vehicle: Kosmos 11K63.

• 1967 March 21 - Cosmos 149 - Program: DS. Launch Site: Kapustin Yar. Launch Vehicle: Kosmos 11K63. Mass: 321 kg (707 lb). Perigee: 246 km (152 mi). Apogee: 284 km (176 mi). Inclination: 48.40 deg. Period: 89.80 min.

  Used in development of aerodynamic systems for stabilisation and orientation of spacecraft. Also carried military optical equipment experiments.

• 1970 January 16 - Cosmos 320 - Program: DS. Launch Site: Kapustin Yar. Launch Vehicle: Kosmos 11K63. Mass: 375 kg (826 lb). Perigee: 247 km (153 mi). Apogee: 326 km (202 mi). Inclination: 48.40 deg. Period: 90.20 min.

  Used in development of aerodynamic systems for stabilisation and orientation of spacecraft. Also carried military optical equipment experiments.

• Krebs, Gunter, Gunter's Space Page, University of Frankfurt, 1996. Accessed at: http://www.skyrocket.de/space.

• USAF Satellite Database, USAF Institute of Technology, 1995. Accessed at: ftp://archive.afit.af.mil/pub/space/.

• McDowell, Jonathan, Jonathan's Space Home Page, Harvard University, 1997-present. Jonathan McDowell's complete on-line listing of all objects orbited and over 20,000 rocket launches Accessed at: http://www.planet4589.org/jsr.html.

• JPL Mission and Spacecraft Library, Jet Propulsion Laboratory, 1997. Accessed at: http://msl.jpl.nasa.gov/home.html.

• Agapov, V, Novosti Kosmonavtiki, "K zapusku pervovo ISZ serii 'DS'", 1997, Issue 6.