A Polyus mock-up was delivered by the Krunichev Factory to Baikonur Cosmodrome, for tests of the Polyus/Energia interface. The spacecraft was about 37 meters in length, 4.1 meters in diameter and weighed about 80 metric tons.

Planned Department of Defense shuttle mission. Cancelled after Challenger disaster. Would have been first launch from the ill-fated SLC-6 launch site at Vandenberg, California.

Replaced Cosmos 1698. Covered Oko constellation plane 3 - 354 degree longitude of ascending node. References: 1 , 2 , 5 , 6 , 100 .

Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation. References: 1 , 2 , 6 .

High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission. References: 1 , 2 , 6 , 179 .

The decree of 27 January 1986 was reaffirmed.

Planned TDRS/IUS deployment shuttle mission. Cancelled after Challenger disaster.

Military cartographic satellite; returned film capsule. References: 1 , 2 , 6 .

Oceanographic. Acquisition of operational oceanographic information in the interests of various branches of the national economy of the USSR and international cooperation; continued trials of new types of informational and measurement apparatus and methods of remote sen sing of the earth's surface and atmosphere. References: 1 , 2 , 5 , 6 .

Investigation of the upper atmosphere and outer space. References: 1 , 2 , 5 , 6 .

Replaced Molniya 1-59. Operation of the long-range telephone and telegraph radio communications system in the USSR; transmission of USSR Central Television programmes to stations in the Orbita network. References: 1 , 2 , 5 , 6 .

Planned shuttle mission for deployment of Hubble space telescope. Cancelled after Challenger disaster.

Further UKSS tests of Energia were conducted in preparation of a test launch without Buran. These were conducted using a dummy payload and solid rocket motors to simulate loads from the booster rockets. Following this vehicle 6SL was selected for the first actual launch. The launch vehicle used by itself without Buran was named Energia by Glushko only just before the launch.

Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation. References: 1 , 2 , 6 .

Ocean surveillance. References: 1 , 2 , 5 , 6 .

Photo/digital surveillance. References: 1 , 2 , 6 .

Experimental Geophysical Payload; new launch vehicle test flight. EGS (Ajisai). Improvement of the accuracy of domestic geodetic triangulation network. Determination of accurate location of remote islands. Clarification of the relationship between Japanese geodetic system network and those of other areas of the world. L aunch vehicle H-I (two-stage) test flight no. 1. Launch time 2045 GMT. Launching organization NASDA. References: 1 , 2 , 5 , 6 .

MABES (Jindai). Experiment on the levitation of the magnetic bearing flywheel under zero-g condition. References: 1 , 2 , 5 , 6 .

Japanese Amateur Satellite. JAS-1 (Fuji). Amateur satellite communications. Development of amateur satellite technology. Launch vehicle H-I (two-stage) test flight no. 1. Launch time 2045 GMT. Launching organization NASDA. Fuji-OSCAR 12 was launched piggyback with a Japanese experimental geodetic satellite Ajisai (EGS). Weight 50 kg. 26-sided polyhedron, 40 x 40 x 47 cm. FO-12 was the first Japanese amateur satellite developed by the Japan Amateur Radio League (English version) with system design and integration performed at NEC. FO-12 was taken out of service November 5, 1989 because of battery failure. References: 1 , 2 , 5 , 6 .

Following the decision to make the first flight of Energia without a Buran orbiter, in August-September 1986 further UKSS tests of Energia were conducted. These used a dummy payload and solid rocket motors to simulate loads from the booster rockets.

Ocean surveillance. References: 1 , 2 , 5 , 6 .

Military cartographic satellite; returned film capsule. References: 1 , 2 , 6 .

High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission. References: 1 , 2 , 6 , 179 .

Replaced Cosmos 1547. Covered Oko constellation plane 7 - 156 degree longitude of ascending node. References: 1 , 2 , 5 , 6 , 100 .

The Ministry of Defence issued technical specifications on 1 September for an MVKS, a single-stage reusable aerospaceplane system. The MKVS was to provide effective and economic delivery to near-earth orbit; develop the technology for effective transatmospheric flight; provide super high-speed intercontinental transport, and fulfil military objectives in and from space.

The second engine test was a complete success, the engine running for 390 seconds. This test required the entire city of Leninsk to be without water for ten days in order to accumulate enough water for the UKSS cooling system.

Military cartographic satellite; returned film capsule. References: 1 , 2 , 6 .

Released 25 Romb radar calibration subsatellites. References: 1 , 2 , 5 , 6 .

Planned Department of Defense shuttle mission. Cancelled after Challenger disaster.

Replaced Molniya 1-57. Operation of the long-range telephone and telegraph radio communications system in the USSR; transmission of USSR Central Television programmes to stations in the Orbita network. References: 1 , 2 , 5 , 6 .

SDIO sensor tests. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). References: 1 , 2 , 5 , 6 .

Replaced Cosmos 1624. References: 1 , 2 , 5 , 6 .

To have docked with Mir. Cancelled all-female flight to be launched on International Woman's Day. Breakdown of Salyut 7, exhaustion of stock of Soyuz T spacecraft, and official resistance led to cancellation of the mission. Officially cancelled due to birth of Savitskaya's baby. No female cosmonauts would be in training again until a decade later. References: 94 .

Glonass. Testing components and apparatus from the space navigation system being set up to determine the position of Soviet civil aircraft and vessels in the Soviet merchant marine and fishing fleet. Three satellites launched by a single rocket. References: 1 , 2 , 5 , 6 , 67 , 274 .

Glonass. Testing components and apparatus from the space navigation system being set up to determine the position of Soviet civil aircraft and vessels in the Soviet merchant marine and fishing fleet. Three satellites launched by a single rocket. References: 1 , 2 , 5 , 6 , 67 , 274 .

Glonass. Testing components and apparatus from the space navigation system being set up to determine the position of Soviet civil aircraft and vessels in the Soviet merchant marine and fishing fleet. Three satellites launched by a single rocket. References: 1 , 2 , 5 , 6 , 67 , 274 .

Military cartographic satellite; returned film capsule. References: 1 , 2 , 6 .

Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). References: 1 , 2 , 5 , 6 , 278 .

Planned shuttle LDEF (Long Duration Exposure Facility) recovery mission. Cancelled after Challenger disaster.

Planned Department of Defense shuttle mission. Cancelled after Challenger disaster.