(19617) Duhamel Outer Main-belt Asteroid
Discovered on 8 August 1999 by P. G. Comba at Prescott.
Jean-Maria-Constant Duhamel (1797-1872) was a French applied mathematician who introduced a method to study the propagation of heat in solids with variable boundary temperatures. A generalization of this method is referred to as the Duhamel principle.Naming citation (20010309/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Duhamel is today
Seen from above the solar system on 2026-10-14: Duhamel is 3.67 au from the Sun and 4.43 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 19617 |
| Provisional designation | 1999 PH1 |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 10.5 km (#4,808 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0630 |
| Absolute magnitude (H) | 13.81 |
| Orbital period | 5.77 years |
| Semi-major axis | 3.22 au |
| Perihelion – aphelion | 2.76 – 3.67 au |
| Eccentricity | 0.141 |
| Inclination | 1.88° |
| Closest distance between its orbit and Earth's (MOID) | 1.78 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Constant
All asteroids named after someone called Constant