(18555) Courant Main-belt Asteroid
Discovered on 4 February 1997 by P. G. Comba at Prescott.
Richard Courant (1888-1972) studied and later taught at Göttingen. In 1934 he became a professor at New York University, where he founded and led one of the most prestigious institutes of applied mathematics, later named in his honor.Naming citation (20010309/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Courant is today
Seen from above the solar system on 2026-10-14: Courant is 2.93 au from the Sun and 3.85 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18555 |
| Provisional designation | 1997 CN4 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 14.59 |
| Orbital period | 4.76 years |
| Semi-major axis | 2.83 au |
| Perihelion – aphelion | 2.72 – 2.94 au |
| Eccentricity | 0.0385 |
| Inclination | 1.24° |
| Closest distance between its orbit and Earth's (MOID) | 1.74 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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