The Star 37D Upper Stage of the Delta 2913 launch with the COS-B Cosmic Gamma-Ray satellite re-entered the atmosphere on May 20, 2017 after over four decades in orbit.
Star 37 was introduced in the 1970s and has been used on a variety of spacecraft. The upper stage features a 0.93-meter diameter casing holding a total of 718 Kilograms of solid propellant, consumed during a 50-second long burn to create around 44 Kilonewtons of thrust and provide the final kick to deliver a payload into orbit.
NORAD ID: 8063
Object: Delta I R/B
Type: Star 37D Solid Rocket Motor
Mass: 65kg (inert)
Launched: August 9, 1975 – 01:48 UTC
Launch Vehicle: Delta 2913
Launch Site: Vandenberg Air Force Base, California
Launch the COS-B Cosmic Gamma-Ray Satellite B
Re-Entry Prediction: May 20, 2017 – 15:05 UTC +/-15 Min.
Re-Entry Zone: Unknown