Spektr-R is a 10 m space radio telescope launched in 2011. Among its uses is to provide one end of very-long-baseline interferometry. Its elliptical orbit extends to 384,000 km. It operates at 1.35, 6.0, 18.0, and 92.0 cm radio wavelengths.
Spektr-R is one telescope of the RadioAstron program which coordinates its use with Earth-based radio telescopes. It has the potential for extreme angular resolution (0.01 milliarcseconds), but requires a bright radio source because of Spektr-R's 10 m dish, smaller than typical ground dishes.