729 Watsonia is a rare-type asteroid and namesake of the Watsonia family from the central region of the asteroid belt.
It was named after the Canadian-American astronomer James C. Watson.
Watsonia occulted the star 54 Leonis (HIP 53417, a 4.3 Magnitude Star) on 2013 Mar 03 at 01:48.
[3] This object is the namesake of the Watsonia family, an Asteroid family of approximately 100 asteroids that share similar spectral properties and orbital elements; hence they may have arisen from the same collisional event.
All members have a relatively high orbital inclination.