(9509) Amfortas Main-belt Asteroid
Discovered on 16 October 1977 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
Amfortas was the king of Monsalvat and of the knights of the Holy Grail in Wagner's opera Parsifal.Naming citation (20001111/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Amfortas is today
Seen from above the solar system on 2026-10-14: Amfortas is 2.22 au from the Sun and 1.55 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9509 |
| Provisional designation | 3453 T-3 |
| Orbit class | Main-belt Asteroid |
| Rotation period | 3.85 hours |
| Absolute magnitude (H) | 14.88 |
| Orbital period | 3.53 years |
| Semi-major axis | 2.32 au |
| Perihelion – aphelion | 1.97 – 2.67 au |
| Eccentricity | 0.151 |
| Inclination | 6.69° |
| Closest distance between its orbit and Earth's (MOID) | 0.964 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 16 October 1977
- (3798) de Jager
- (3936) Elst
- (4044) Erikhog
- (4108) Rakos
- (4722) Agelaos
- (4753) Phidias
- (4754) Panthoos
- (5610) Balster
- (5699) Munch
- (5700) Homerus
- (5984) Lysippus
- (6055) Brunelleschi