(546) Herodias Main-belt Asteroid
Discovered on 10 October 1904 by P. Gotz at Heidelberg.
Where Herodias is today
Seen from above the solar system on 2026-10-14: Herodias is 2.45 au from the Sun and 1.88 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 546 |
| Provisional designation | A904 TD |
| Orbit class | Main-belt Asteroid |
| Diameter | 65.9 km (#510 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0540 |
| Rotation period | 10.8 hours |
| Spectral type | TDG |
| Absolute magnitude (H) | 9.72 |
| Orbital period | 4.18 years |
| Semi-major axis | 2.60 au |
| Perihelion – aphelion | 2.29 – 2.90 au |
| Eccentricity | 0.116 |
| Inclination | 14.9° |
| Closest distance between its orbit and Earth's (MOID) | 1.35 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.