When did IMAGE return from the dead?

Continue reading “When did IMAGE return from the dead?”

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NROL-47 transmits at S-band

A Delta IV rocket launched the classified NROL-47 satellite from Vandenberg in California on January 12, 2018. The satellite is believed to be the 5th member of the Topaz (FIA Radar) project, radar satellites operating in 1100km altitude, 123 degree inclined retrograde orbits. Broadcast warnings for the NROL-47 launch placed the impact areas of the solid rocket motors, the first stage and the de-orbit area of the second stage at markedly different locations than with previous Topaz launches, indicating an orbital inclination around 108 degrees. Hence, it was not clear if NROL-47 is a Topaz satellite. Continue reading “NROL-47 transmits at S-band”