(8603) Senator Main-belt Asteroid
Discovered on 16 October 1977 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
Named for Lanius senator, or woodchat shrike.Naming citation (WGSBN Bull. 2, #8, 6), IAU / Minor Planet Center, via NASA/JPL
Where Senator is today
Seen from above the solar system on 2026-10-14: Senator is 2.38 au from the Sun and 3.36 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 8603 |
| Provisional designation | 3134 T-3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.05 km (#15,099 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.229 |
| Rotation period | 20.0 hours |
| Absolute magnitude (H) | 14.9 |
| Orbital period | 3.15 years |
| Semi-major axis | 2.15 au |
| Perihelion – aphelion | 1.73 – 2.57 au |
| Eccentricity | 0.197 |
| Inclination | 3.68° |
| Closest distance between its orbit and Earth's (MOID) | 0.715 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