(29491) Pfaff Main-belt Asteroid
Discovered on 23 November 1997 by P. G. Comba at Prescott.
Johann Friedrich Pfaff (1765-1825) was a German mathematician who proposed the first general method for integrating partial differenitial equations of the first order.Naming citation (20020128/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Pfaff is today
Seen from above the solar system on 2026-10-14: Pfaff is 2.69 au from the Sun and 2.55 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 29491 |
| Provisional designation | 1997 WB1 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.25 |
| Orbital period | 4.27 years |
| Semi-major axis | 2.63 au |
| Perihelion – aphelion | 2.42 – 2.84 au |
| Eccentricity | 0.0798 |
| Inclination | 2.35° |
| Closest distance between its orbit and Earth's (MOID) | 1.44 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Johann
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- (5195) Kaendler
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- (8368) Lamont
- (8583) Froberger
- (9052) Uhland
- (9134) Encke
- (10749) Musaus
- (11673) Baur
All asteroids named after someone called Johann
Also discovered on 23 November 1997
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