(1154) Astronomia Outer Main-belt Asteroid
Discovered on 8 February 1927 by K. Reinmuth at Heidelberg.
Where Astronomia is today
Seen from above the solar system on 2026-10-14: Astronomia is 3.63 au from the Sun and 3.80 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 1154 |
| Provisional designation | 1927 CB |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 55.7 km (#647 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0360 |
| Rotation period | 18.1 hours |
| Spectral type | FXU: |
| Absolute magnitude (H) | 10.53 |
| Orbital period | 6.26 years |
| Semi-major axis | 3.40 au |
| Perihelion – aphelion | 3.16 – 3.63 au |
| Eccentricity | 0.0683 |
| Inclination | 4.53° |
| Closest distance between its orbit and Earth's (MOID) | 2.15 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.