Syncom - Credit: NASA. 15,244 bytes. 288 x 339 pixels.

Experimental telecommunications satellite.

Total Mass: 39 kg.

Experimental commsat; lost contact following orbital injection. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).

Experimental commsat; 1st geosynchronous satellite. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).

Experimental commsat; carried Star Flash experiment. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).

• 2 - McDowell, Jonathan, The United Nations Registry of Space Objects, Harvard University, 1997. HTML when accessed: http://hea-www.harvard.edu/QEDT/jcm/space/un/un.html
• 6 - JPL Mission and Spacecraft Library, Jet Propulsion Laboratory, 1997. HTML when accessed: http://msl.jpl.nasa.gov/home.html
• 279 - McDowell, Jonathan, Launch Log, October 1998. HTML when accessed: http://hea-www.harvard.edu/~jcm/space/log/launch.html

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STS-41-D - Deployment of the Syncom IV (Leasat-2) satellite Credit: NASA. 35,159 bytes. 515 x 467 pixels.

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STS-41-D - View of the Syncom IV satellite in orbit over the earth Credit: NASA. 48,797 bytes. 623 x 468 pixels.

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STS-51-A - Syncom IV-1 satellite leaving Discovery's payload bay Credit: NASA. 32,345 bytes. 518 x 469 pixels.

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STS-51-D - End effector of the Discovery's RMS with tools moves toward Syncom-IV Credit: NASA. 30,269 bytes. 482 x 469 pixels.

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STS-51-D - Syncom-IV (LEASAT) satellite Credit: NASA. 32,251 bytes. 419 x 428 pixels.

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STS-51-I - Astronaut James van Hoften on RMS tracking Syncom IV-3 after deployment Credit: NASA. 56,097 bytes. 485 x 471 pixels.

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STS-51-I - Astronaut James van Hoften working with Syncom IV-3 satellite Credit: NASA. 21,626 bytes. 332 x 469 pixels.

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STS-51-I - Astronaut James van Hoften working with Syncom IV-3 satellite Credit: NASA. 22,805 bytes. 334 x 469 pixels.

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STS-51-I - Astronaut James van Hoften working with Syncom IV-3 satellite Credit: NASA. 48,115 bytes. 567 x 471 pixels.

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STS-32 - SYNCOM IV-5 satellite drifts over cloud-covered Earth after STS-32 deploymen Credit: NASA. 29,579 bytes. 497 x 444 pixels.

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