(121480) Dolanhighsmith Main-belt Asteroid
Discovered on 4 October 1999 by CSS at Catalina.
Dolan E. Highsmith (b. 1970) contributed to the Navigation Teams of the ESA Mars Express mission and the NASA MRO, MSL, MAVEN and OSIRIS-REx missions.Naming citation (MPC batch dated 2016-08-18), IAU / Minor Planet Center, via NASA/JPL
Where Dolanhighsmith is today
Seen from above the solar system on 2026-10-14: Dolanhighsmith is 2.87 au from the Sun and 3.27 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 121480 |
| Provisional designation | 1999 TH240 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.97 km (#15,299 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.167 |
| Absolute magnitude (H) | 15.46 |
| Orbital period | 4.71 years |
| Semi-major axis | 2.81 au |
| Perihelion – aphelion | 2.49 – 3.14 au |
| Eccentricity | 0.116 |
| Inclination | 4.66° |
| Closest distance between its orbit and Earth's (MOID) | 1.49 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 4 October 1999
- (13407) Ikukomakino
- (15093) Lestermackey
- (15509) Annejing
- (15510) Phoeberounds
- (16088) Jessgoldstein
- (17179) Codina
- (20626) Rider-Stokes
- (20638) Lingchen
- (20639) Michellouie
- (20641) Yenuanchen
- (20642) Laurajohnson
- (21804) Vaclavneumann