(204) Kallisto Main-belt Asteroid
Discovered on 8 October 1879 by J. Palisa at Pola.
Where Kallisto is today
Seen from above the solar system on 2026-10-14: Kallisto is 2.21 au from the Sun and 2.98 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 204 |
| Provisional designation | A879 TA |
| Orbit class | Main-belt Asteroid |
| Diameter | 48.6 km (#776 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.194 |
| Rotation period | 19.5 hours |
| Spectral type | S |
| Absolute magnitude (H) | 8.97 |
| Orbital period | 4.36 years |
| Semi-major axis | 2.67 au |
| Perihelion – aphelion | 2.20 – 3.14 au |
| Eccentricity | 0.176 |
| Inclination | 8.27° |
| Closest distance between its orbit and Earth's (MOID) | 1.20 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by J. Palisa
- (136) Austria
- (137) Meliboea
- (140) Siwa
- (142) Polana
- (143) Adria
- (151) Abundantia
- (153) Hilda
- (155) Scylla
- (156) Xanthippe
- (178) Belisana
- (182) Elsa
- (183) Istria
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