(11898) Dedeyn Outer Main-belt Asteroid
Discovered on 10 April 1991 by E. W. Elst at La Silla.
Peter Paul De Deyn (b. 1957) is head of the Laboratory of Neurochemistry and Behavior at the Born-Bunge Foundation of the University of Antwerp. During 1985-1986 he specialized in neuropsychiatry at the Ann Arbor Medical Center. He is currently involved with studies of human ethology and animal laboratory sciences.Naming citation (20010509/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Dedeyn is today
Seen from above the solar system on 2026-10-14: Dedeyn is 3.07 au from the Sun and 3.73 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11898 |
| Provisional designation | 1991 GM9 |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 11.4 km (#4,378 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0790 |
| Absolute magnitude (H) | 13.24 |
| Orbital period | 5.80 years |
| Semi-major axis | 3.23 au |
| Perihelion – aphelion | 2.89 – 3.56 au |
| Eccentricity | 0.104 |
| Inclination | 2.10° |
| Closest distance between its orbit and Earth's (MOID) | 1.90 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Peter
- (2382) Nonie
- (4314) Dervan
- (4507) Petercollins
- (5153) Gierasch
- (7527) Marples
- (7925) Shelus
- (8086) Peterthomas
- (8160) Petererwin
- (8280) Petergruber
- (8395) Rembaut
- (9207) Petersmith
- (9269) Peterolufemi
All asteroids named after someone called Peter
Also discovered on 10 April 1991
More named asteroids discovered by E. W. Elst
- (3631) Sigyn
- (3784) Chopin
- (3870) Mayre
- (3903) Kliment Ohridski
- (3910) Liszt
- (3912) Troja
- (3918) Brel
- (4038) Kristina
- (4226) Damiaan
- (4342) Freud
- (4344) Buxtehude
- (4345) Rachmaninoff
← (11897) Lemaire · (11899) Weill →