The fuel tank explosion was not caused by its collision with another object, the US military said.
The fuel tank from the Russian Frigate-SB booster block exploded in space on May 8, resulting in 65 debris. The 18th U.S. Air Force Space Control Squadron, which is engaged in the detection, tracking, and identification of all artificial objects in low Earth orbit, announced this on its Twitter page on Tuesday. According to the U.S. military, the incident occurred on May 8. In this case, the explosion was not caused by a collision of the tank with another object.
The collapsed tank is numbered 37756 in the U.S. military catalog of space objects and the international designation is 2011-037B.
According to data posted on the specialized website of the US Air Force space-track.org, before the explosion, the object was in orbit with a minimum height of 422 kilometers and a maximum of 3606 kilometers.
Whether debris threatens existing satellites is not specified.
According to reports, this object is a discarded block of tanks of the Frigate-SB upper stage block, which, when the satellite is put into orbit, is separated after fuel is consumed. The tank was used in July 2011 for delivery to the space of the Spectrum-R observatory.
The Russian side has not yet commented on the information about the explosion of the fuel tank.
Earlier this week, it became aware of a crash during the flight of a new Chinese spacecraft. In particular, the inflatable heat shield of the returned cargo capsule did not work.