(11245) Hansderijk Main-belt Asteroid
Discovered on 16 October 1977 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
Johannes A. F. de Rijk (b. 1926) is a gifted Dutch science writer. Better known under the pseudonym Bruno Ernst, he has made contributions to astronomy, mathematics, physics, art and natural science, sundials and the art of M. C. Escher.Naming citation (20070730/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Hansderijk is today
Seen from above the solar system on 2026-10-14: Hansderijk is 2.56 au from the Sun and 1.69 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11245 |
| Provisional designation | 3100 T-3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.55 km (#13,815 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.184 |
| Absolute magnitude (H) | 15.01 |
| Orbital period | 3.79 years |
| Semi-major axis | 2.43 au |
| Perihelion – aphelion | 2.13 – 2.73 au |
| Eccentricity | 0.123 |
| Inclination | 2.96° |
| Closest distance between its orbit and Earth's (MOID) | 1.12 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Johannes
- (5703) Hevelius
- (7343) Ockeghem
- (10506) Rydberg
- (11681) Ortner
- (12134) Hansfriedeman
- (12617) Angelusilesius
- (13332) Benkhoff
- (14541) Sacrobosco
- (15955) Johannesgmunden
- (18032) Geiss
- (26355) Grueber
- (32606) Markkanen
All asteroids named after someone called Johannes
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