(228) Agathe Main-belt Asteroid
Discovered on 19 August 1882 by J. Palisa at Vienna.
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Where Agathe is today
Seen from above the solar system on 2026-10-14: Agathe is 1.90 au from the Sun and 1.02 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 228 |
| Provisional designation | A882 QA |
| Orbit class | Main-belt Asteroid |
| Diameter | 9.30 km (#5,544 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.208 |
| Rotation period | 6.48 hours |
| Spectral type | S |
| Absolute magnitude (H) | 12.27 |
| Orbital period | 3.27 years |
| Semi-major axis | 2.20 au |
| Perihelion – aphelion | 1.67 – 2.73 au |
| Eccentricity | 0.242 |
| Inclination | 2.54° |
| Closest distance between its orbit and Earth's (MOID) | 0.657 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.