Ephemeris

NASA Spacecraft Provides Insight into Asteroid Bennu's Future Orbit

Retrieved on: 
Wednesday, August 11, 2021

The study, titled "Ephemeris and hazard assessment for near-Earth asteroid (101955) Bennu based on OSIRIS-REx data," was published in the journal Icarus.

Key Points: 
  • The study, titled "Ephemeris and hazard assessment for near-Earth asteroid (101955) Bennu based on OSIRIS-REx data," was published in the journal Icarus.
  • In 2135, asteroid Bennu will make a close approach with Earth.
  • Because the asteroid spins, the heated surface will rotate away and cool down when it enters the nightside.
  • As it cools, the surface releases infrared energy, which generates a small amount of thrust on the asteroid a phenomenon called the Yarkovsky effect.