NOAA Weather Satellite Breaks Up in Orbit

• A U.S. National Oceanic and Atmospheric Administration satellite retired in 2014 has suffered an apparent breakup, the second time in less than a year that a polar-orbiting weather satellite has generated orbital debris.

• The Joint Space Operations Center (JSpOC) announced Nov. 25 that it had identified a possible breakup of the NOAA 16 satellite. The center, which tracks objects in orbit and warns of potential collisions, said it first detected the breakup at 3:41 a.m. Eastern time and was tracking an unspecified number of “associated objects” in the orbit of NOAA 16.

• JSpOC said later Nov. 25 that the debris from NOAA 16 posed no current threat to other satellites in orbit. It added that it did not believe the debris resulted from a collision with another object, suggesting that NOAA 16 broke up on its own.

• NOAA 16 launched in September 2000 with a planned lifetime of three to five years. The spacecraft continued to operate in a backup role until June 2014, when NOAA retired the spacecraft after an unspecified “critical anomaly.”

• The breakup, if confirmed, would be the second time in less than a year for a satellite in polar orbit. In February, the Defense Meteorological Satellite Program Flight 13 satellite exploded in orbit, creating several dozen pieces of debris. A sudden temperature spike in that spacecraft led spacecraft engineers to conclude a battery in the spacecraft ruptured because of a design flaw. Seven other DMSP spacecraft have a similar design flaw.

• Orbital debris mitigation guidelines developed by the U.S. government recommend removing all sources of on-board energy on a spacecraft, including venting propellant tanks and discharging batteries, when a spacecraft reaches the end of its mission. It’s not clear if spacecraft controllers were able to carry out those procedures when the NOAA 16 spacecraft encountered its mission-ending anomaly last year.

• September 2000 with a planned lifetime of three to five years. The spacecraft continued to operate in a backup role until June 2014, when NOAA retired the spacecraft after an unspecified “critical anomaly.”

• The breakup, if confirmed, would be the second time in less than a year for a satellite in polar orbit. In February, the Defense Meteorological Satellite Program Flight 13 satellite exploded in orbit, creating several dozen pieces of debris. A sudden temperature spike in that spacecraft led spacecraft engineers to conclude a battery in the spacecraft ruptured because of a design flaw. Seven other DMSP spacecraft have a similar design flaw.

Keywords - Defense Meteorological Satellite Program Flight 13 satellite exploded in orbit, creating several dozen pieces of debris,DMSP spacecraft.

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