(13937) Roberthargraves Main-belt Asteroid
Discovered on 2 August 1989 by Shoemaker, C. S., Shoemaker, E. M. at Palomar.
Robert Bero Hargraves (b. 1928), Princeton University professor of geosciences, is known for his research in paleomagnetism; he participated in the magnetic properties experiment on the Mars Pathfinder. His studies include impact structures in Africa and the United States.Naming citation (20030501/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Roberthargraves is today
Seen from above the solar system on 2026-10-14: Roberthargraves is 2.36 au from the Sun and 1.85 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 13937 |
| Provisional designation | 1989 PU |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 13.93 |
| Orbital period | 4.05 years |
| Semi-major axis | 2.54 au |
| Perihelion – aphelion | 1.92 – 3.16 au |
| Eccentricity | 0.243 |
| Inclination | 29.6° |
| Closest distance between its orbit and Earth's (MOID) | 0.918 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Robert
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