(9173) Viola Castello Main-belt Asteroid
Discovered on 4 October 1989 by H. Debehogne at La Silla.
Viola Castello, Piemonte (Italy), is a small village (50 inhabitants) surrounded by a large forest of chestnuts, some of which are many centuries old. The people of the village maintain and preserve the forest in perfect harmony with Nature. Name suggested by V. Zappalá.Naming citation (WGSBN Bull. 1, #10, 5), IAU / Minor Planet Center, via NASA/JPL
Where Viola Castello is today
Seen from above the solar system on 2026-10-14: Viola Castello is 2.79 au from the Sun and 2.03 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9173 |
| Provisional designation | 1989 TZ15 |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.21 km (#6,387 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.181 |
| Rotation period | 6.07 hours |
| Absolute magnitude (H) | 12.68 |
| Orbital period | 4.66 years |
| Semi-major axis | 2.79 au |
| Perihelion – aphelion | 2.46 – 3.12 au |
| Eccentricity | 0.119 |
| Inclination | 8.58° |
| Closest distance between its orbit and Earth's (MOID) | 1.46 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Viola
All asteroids named after someone called Viola
Also discovered on 4 October 1989
- (6241) Galante
- (6778) Tosamakoto
- (7239) Mobberley
- (8490) Akiehashimoto
- (9580) Tarumi
- (10514) Harlow
- (69273) Derbyastro
More named asteroids discovered by H. Debehogne
- (2364) Seillier
- (2543) Machado
- (2590) Mourao
- (2673) Lossignol
- (2707) Ueferji
- (2814) Vieira
- (2852) Declercq
- (2926) Caldeira
- (3002) Delasalle
- (3138) Ciney
- (3274) Maillen
- (3365) Recogne
← (9172) Abhramu · (9175) Graun →