Possible Earth impact has one of the best-determined asteroid orbital solutions. This is due to a combination of: an orbit moderately inclined (12 degrees) to the ecliptic plane (reducing in-plane perturbations); high-precision radar astrometry, which provides its distance and is complementary to the measurements of angular positions; a 74-year observation arc; an uncertainty region controlled by resonance.
Possible Earth impact has one of the best-determined asteroid orbital solutions. This is due to a combination of: an orbit moderately inclined (12 degrees) to the ecliptic plane (reducing in-plane perturbations); high-precision radar astrometry which provides its distance and is complementary to the measurements of angular positions; a 74-year observation arc; an uncertainty region controlled by resonance.