(9497) Dwingeloo Main-belt Asteroid
Discovered on 29 September 1973 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
The Dwingeloo 25-m radio telescope in The Netherlands supported investigations of the 21-cm emission from hydrogen in our Galaxy. Its principal contributions include the discoveries of the 3-kpc arm and the high-velocity-cloud phenomenon, as well as studies of the galactic center. The name was suggested by W. A. Fröger.Naming citation (WGSBN Bull. 3, #13, 7), IAU / Minor Planet Center, via NASA/JPL
Where Dwingeloo is today
Seen from above the solar system on 2026-10-14: Dwingeloo is 3.06 au from the Sun and 4.06 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9497 |
| Provisional designation | 1001 T-2 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.47 km (#9,763 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.310 |
| Absolute magnitude (H) | 13.55 |
| Orbital period | 5.05 years |
| Semi-major axis | 2.94 au |
| Perihelion – aphelion | 2.64 – 3.25 au |
| Eccentricity | 0.103 |
| Inclination | 2.26° |
| Closest distance between its orbit and Earth's (MOID) | 1.66 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 29 September 1973
- (2049) Grietje
- (4357) Korinthos
- (4549) Burkhardt
- (4721) Atahualpa
- (4752) Myron
- (4876) Strabo
- (4978) Seitz
- (5151) Weerstra
- (5197) Rottmann
- (5243) Clasien
- (5244) Amphilochos
- (5266) Rauch