(11665) Dirichlet Outer Main-belt Asteroid
Discovered on 14 April 1997 by P. G. Comba at Prescott.
Peter Gustav Lejeune Dirichlet (1805-1859) was the successor of Gauss and the predecessor of Riemann at Göttingen. He made important contributions in both pure and applied mathematics and gave the first rigorous proof of the convergence of Fourier series.Naming citation (19991123/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Dirichlet is today
Seen from above the solar system on 2026-10-14: Dirichlet is 2.92 au from the Sun and 3.91 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11665 |
| Provisional designation | 1997 GL28 |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 6.80 km (#7,871 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0870 |
| Absolute magnitude (H) | 14.25 |
| Orbital period | 5.96 years |
| Semi-major axis | 3.29 au |
| Perihelion – aphelion | 2.83 – 3.75 au |
| Eccentricity | 0.140 |
| Inclination | 15.7° |
| Closest distance between its orbit and Earth's (MOID) | 1.86 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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