The U.S.-funded and Russian-built Zarya was a U.S. component of the International Space Station.

The Lunar Prospector was designed for a low polar orbit investigation of the Moon, including mapping of surface composition and possible polar ice deposits, measurements of magnetic and gravity fields, and study of lunar outgassing events. Data from the 1 to 3 year mission will allow construction of a detailed map of the surface composition of the Moon, and will improve understanding of the origin, evolution, current state, and resources of the Moon. After launch, the Lunar Prospector had a 105 hour cruise to the Moon, followed by insertion into a near-circular 100 km altitude lunar polar orbit with a period of 118 minutes. The nominal mission duration was one year. A two year extended mission following this was possible, during which the orbit was to be lowered to 50 km and then 10 km altitude to obtain higher resolution measurements. References: 4 , 296 .

Recovered equipment; began repairs on leaky Kvant-2 airlock. Examination of airlock indicated cause was loose belt, resulting in 10 mm gap. References: 66 .

Geostationary at 52.8 degrees E. References: 4 , 276 .

Inspected station exterior.

RSLP (MSLS) IFT-2

Fell in Mediterranean Sea. References: 4 .

Penultimate Shuttle mission to Mir. Andy Thomas replaced David Wolf as the resident NASA astronaut. Endeavour docked with the SO module on Mir at 20:14 GMT on January 24, 1998.

Payloads included:

• Orbiter middeck: CEBAS (German/US biological module with fish and snails); dinosaur skull (part of a museum educational program)
• Bay 1: Tunnel Adapter
• Bay 3: Orbiter Docking System/External Airlock
• Bay 4-7: Transfer Tunnel
• Bay 8-12: Spacehab Double Module (payloads included supplies for Mir, X-ray crystallography detector planned for the International Space Station)
• Bay 13P: Getaway Special GABA carrier with G-141, G-145 (German materials processing experiments)
• Bay 13S: Getaway Special GABA carrier with G-093 (University of Michigan fluid dynamics experiment), G-432 (Chinese materials processing experiment)

Despite fits problems with his Sokol emergency spacesuit, Andy Thomas replaced David Wolf as a Mir crew member on January 25. Endeavour undocked from Mir on January 29 at 16:57 GMT and made one flyaround of the station before departing and landing at Kennedy Space Center's runway 15 at 22:35 GMT on January 31. References: 4 , 7 , 276 .

Classified satellite for the National Reconnaissance Office. References: 4 , 278 .

Soyuz TM-27 carried the Mir EO-25 crew and French astronaut Leopold Eyharts. NASA and the Russian Space Agency had hoped Soyuz TM-27 could dock with Mir while Endeavour was still there, resulting in an on-board crew of 13, a record which would have stood for years or decades. But the French vetoed this, saying the commotion and time wasted would ruin Eyharts Pegase experimental programme. Soyuz TM-27 docked at the Kvant module port at 17:54 GMT on January 31, 1998, less than five hours before Endeavour landed in Florida.

Solovyov handed over command of Mir to EO-25 commander Musabayev, and the Mir EO-24 crew and Eyharts undocked from the forward port of Mir at 05:52 GMT on February 19 aboard the Soyuz TM-26 for their return home. On February 20, the EO-25 crew and Andy Thomas of the NASA-7 mission boarded Soyuz TM-27 and undocked from the Kvant port at 08:48 GMT. They redocked with the forward port on Mir at 09:32 GMT. This freed up the Kvant port for a test redocking of the Progress M-37 cargo ship, parked in a following orbit with Mir during the crew transfer.

Soyuz TM-27 undocked from Mir at 02:05 GMT on August 25, with Musabayev, Budarin and Baturin aboard. They landed on August 25 at 05:23 UTC near Arkalyk in Kazakstan. References: 4 , 9 , 51 , 276 .

Geostationary at 84.0 degrees W. References: 4 , 276 .

Geostationary at 25.0 degrees E. References: 4 , 276 .

Altimeter. References: 4 , 276 .

Plane G. Ascending node 297.9 degrees. References: 4 , 276 .

Plane G. Ascending node 298.1 degrees. References: 4 , 276 .

Plane 1. Ascending node 43.9 degrees. References: 4 , 276 .

Plane 1. Ascending node 43.8 degrees. References: 4 , 276 .

Plane 1. Ascending node 42.4 degrees. References: 4 , 276 .

Plane 1. Ascending node 43.6 degrees. References: 4 , 276 .

Topographic mapping for the Army General Staff. Landed in Kazakhstan April 2 1998. References: 4 , 276 .

Plane 5. Ascending node 294.2 degrees. References: 4 , 276 .

Plane 5. Ascending node 294.1 degrees. References: 4 , 276 .

Plane 5. Ascending node 294.2 degrees. References: 4 , 276 .

Plane 5. Ascending node 294.2 degrees. References: 4 , 276 .

Plane 5. Ascending node 294 degrees. References: 4 , 276 .

GT-166GB

Kakehashi, meaning 'Bridge', was called Communuications and Broadcasting Experimental Test Satellite (COMETS) before launch. It contained Ka-band communications and inter-satellite data relay payloads. Premature shutdown 44 seconds into the H-II second stage second burn put the satellite into a much lower than planned orbit. The on-board Unified Propulsion System was used to raise it to a more useful orbit. References: 4 , 276 .

SNOE, the Student Nitric Oxide Explorer. Small satellite built by the University of Colorado to measure the Nitric Oxide density as a function of altitude. First satellite in the STEDI (Student Explorer Demonstration Initiative) program. References: 4 , 276 .

Geostationary at 13.0 degrees E. References: 4 , 276 .

Geostationary at 40.5 degrees W. References: 4 , 276 , 278 .

Clark was to have demonstrated advanced spacecraft technologies. Contract was cancelled by NASA in March 1998 when overruns had reached 20% of original contract price and no end to development was in site.

Inner and outer airlocks of Kvant-2 module were depressurised for EVA. However the crew could not open the outer hatch, repaired on 2 January 1998 by Solovyov and Vinogradov. The planned EVA was cancelled.

Progress M-38 was specially modified to carry the second VDU (Vynosnaya Dvigatel'naya Ustanovka, External Engine Unit) propulsion unit. The VDU was mounted externally on a special structure between the cargo module and the service module, replacing the OKD fuel section present on normal Progress vehicles. The crew spacewalks to extract the VDU from Progress and place it on the end of the Sofora boom extending from the Kvant module. The VDU was used to provide attitude control capability for the station. By 03:20 GMT on March 15 1998 Progress M-38 had successfully completed its first two orbital manoeuvres. It replaced Progress M-37 at the docking port on the Kvant module, with a successful docking on March 16 1998 at 22:45 GMT. Undocked May 15 at 1844 UTC, freeing up the docking port on the Kvant module for Progress M-39. Deorbited over Pacific May 15, 1998.

UHF Follow-On F8 was the first Block III UHF Follow-On satellite, replacing the old FLTSATCOM satellites. It carried UHF, EHF and Ka-band transponders, including a video broadcast payload. This was the last Atlas II launch; future Atlas launches would use the Atlas IIA, IIAS and III models. Geostationary at 171.8 degrees E. References: , 278 .

Developed by Matra Marconi Space/Toulouse for CNES, the satellite provided 10-m resolution images with a wide field of view. SPOT 4 also carried a wide field 'vegetation' imager and a laser communications experiment. Launch was by an Arianespace Ariane 40 rocket, the base Ariane 4 model with no strap-on boosters. The liquid hydrogen fuelled third stage of the Ariane 40 entered an 800 km sun-synchronous orbit together with SPOT 4.

Plane 4. Ascending node 262.5 degrees. Not in service.

Plane 4. Ascending node 262.5 degrees.

Plane 3. Ascending node 230.9 degrees.

Plane 3. Ascending node 230.9 degrees.

Plane 3. Ascending node 230.9 degrees.

Plane 3. Ascending node 230.9 degrees.

Plane 3. Ascending node 230.9 degrees.