Planet’s Flock 2E-9 Earth-imaging satellite re-entered the atmosphere on December 25, 2017 – decaying 19 months after being released from the International Space Station to join Planet’s orbiting constellation of Doves that image the entire Earth at least once per day.
NORAD ID: 41571
Object: Flock-1 CubeSat, 3U
Released from ISS: May 31, 2016 – 23:55 UTC
Re-Entry Prediction: December 25, 2017 – 02:21 UTC +/- 60 Minutes
Re-Entry Zone: Unknown
Satellite Description: Flock represents a constellation of three-unit CubeSats operated by Planet Labs to build an Earth-observation constellation based on CubeSats. The satellites were first released from ISS in February 2014 to start orbiting Earth for several months, acquiring images of chosen ground targets.