ODERACS-2 (Orbital Debris Radar Calibration Sphere 2) was a series of six spheres deployed from the shuttle mission STS-63, ODERACS-2A through -2. The purpose of the ''Orbital Debris Radar Calibration Sphere'' experiment was to calibrate the radars and telescopes used for orbital debris measurements by putting passive objects of known size and shape into orbit. The objects were 2, 4, and 6 inch spheres and three wire dipoles. The ODERACS satellites launched aboard the Space Shuttle ''

Discovery Discovery may refer to: * Discovery (observation), observing or finding something unknown * Discovery (fiction), a character's learning something unknown * Discovery (law), a process in courts of law relating to evidence Discovery, The Discovery ...

'' on 4 February 1995, at 04:57 from Kennedy Space Center's Launch Pad 39B alongside

Spartan 204-F1 Sparta (Doric Greek: Σπάρτα, ''Spártā''; Attic Greek: Σπάρτη, ''Spártē'') was a prominent city-state in Laconia, in ancient Greece. In antiquity, the city-state was known as Lacedaemon (, ), while the name Sparta referred t ...

. They were placed into a 51.6° orbit.

Specifications

References

ODERACS 2A
National Space Science Data Center (NASA GSFC) {{Orbital launches in 1995 Microsatellites 1995 in spaceflight Radar calibration satellites