Recently, according tomedia reports, the Russian space agency confirmed that in 2011 after the launch mission, the launch vehicle above the “Fregart-SB” fuel tank has been floating in orbit. Nine years later, the “Fregart-SB” fuel tank suddenly exploded in space on May 8th, producing 65 pieces of debris.
Earlier on May 10, the U.S. Air Force’s 18th Space Surveillance Squadron tweeted that it had found the “Fregart-SB” fuel tank exploding and producing 65 pieces of debris. The fuel tank was on a track with a minimum of 422 km and a maximum of 3606 km before the explosion.
It is worth noting, however, that the accident was not caused by a collision with other objects, and it is not clear what caused the explosion. Russia is tracking the trajectory of the debris to assess whether it will affect other spacecraft.
It is reported that the fuel tank is the “Fregart-SB” above a group of throwout slots, when the satellite into orbit, exhausted fuel and then separated, and then has been floating in orbit.