STS-61-H

STS-61-H

Names	Space Transportation System
Mission type	Communications satellites deployment (planned)
Operator	NASA
Mission duration	7 days, 7 hours, 51 minutes, 51 seconds (planned)
Spacecraft properties
Spacecraft	Space Shuttle Columbia (planned)
Launch mass	1,217,990 kg (2,685,210 lb)
Landing mass	90,584 kg (199,704 lb)
Payload mass	21,937 kg (48,363 lb)
Crew
Crew size	7 (planned)
Members	Michael L. Coats John E. Blaha Robert C. Springer Anna L. Fisher James F. Buchli Pratiwi Sudarmono Nigel R. Wood
Start of mission
Launch date	24 June 1986, 13:09:00 UTC (planned)
Rocket	Space Shuttle Columbia
Launch site	Kennedy Space Center, LC-39B
Contractor	Rockwell International
End of mission
Landing date	1 July 1986, 21:00:51 UTC (planned)
Landing site	Kennedy Space Center, Runway 15
Orbital parameters
Reference system	Geocentric orbit (planned)
Regime	Low Earth orbit
Perigee altitude	285 km (177 mi)
Apogee altitude	295 km (183 mi)
Inclination	28.45°
Period	90.40 minutes
Space Shuttle patch Back row: Anna L. Fisher, Robert C. Springer, James F. Buchli Front row: John E. Blaha and Michael L. Coats Space Shuttle program

STS-61-H was a NASA Space Shuttle mission planned to launch on 24 June 1986 using Columbia. However, it was canceled after the Challenger disaster.

Crew

Position	Astronaut
Commander	Michael L. Coats Would have been second spaceflight
Pilot	John E. Blaha Would have been first spaceflight
Mission Specialist 1	Robert C. Springer Would have been first spaceflight
Mission Specialist 2	Anna L. Fisher Would have been second spaceflight
Mission Specialist 3	James F. Buchli Would have been third spaceflight
Payload Specialist 1	Pratiwi Sudarmono Would have been first spaceflight
Payload Specialist 2	Nigel R. Wood Would have been first spaceflight

Backup crew

Position	Astronaut
Payload Specialist 1	Taufik Akbar Would have been first spaceflight
Payload Specialist 2	Richard A. Farrimond Would have been first spaceflight

Crew notes

Before Buchli was assigned to STS-61-H, Norman E. Thagard was the potential Mission Specialist 3 for this flight.

Mission objectives

The main task of the mission was to bring two commercial satellites into orbit – Palapa B3 and Westar-6S, and military communication satellite - Skynet-4A, The British Skynet and the Indonesian Palapa were supposed to be accompanied by an astronaut from the two countries.

After the Challenger disaster, the deployment of commercial satellites by the Space Shuttle was stopped, and for several years no international astronauts were nominated. Thus, neither the British nor the Indonesian payload specialists got a second chance for a spaceflight. The NASA crew however stayed together and participated in a 56-hour-long simulated mission known as STS-61-M(T) in 1987. The crew finally flew on STS-29, with Anna L. Fisher being replaced by James P. Bagian.

Skynet 4A was launched on 1 January 1990 with a Titan III, Westar-6S was renamed Galaxy-6 and launched on 12 October 1992 by an Ariane 44L. Palapa-B3 was renamed to Palapa B2P and was launched on 20 March 1987 with a Delta-3920.

See also

• Cancelled Space Shuttle missions
• STS-29

External links

• http://www.mach25.nl/~jacques/shuttle/STS61H.html