(100308) CAS Main-belt Asteroid
Discovered on 21 April 1995 by Pravec, P., Sarounova, L. at Ondrejov.
The Česká Astronomická Společnost (Czech Astronomical Society) was established in Prague in 1917. During the last century, the Society's professional and amateur members have contributed considerably to the advancement of astronomy and dissemination of astronomical knowledge among Czech youth and public.Naming citation (MPC batch dated 2017-06-09), IAU / Minor Planet Center, via NASA/JPL
Where CAS is today
Seen from above the solar system on 2026-10-14: CAS is 2.29 au from the Sun and 1.30 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 100308 |
| Provisional designation | 1995 HB |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 16.08 |
| Orbital period | 3.31 years |
| Semi-major axis | 2.22 au |
| Perihelion – aphelion | 2.06 – 2.39 au |
| Eccentricity | 0.0733 |
| Inclination | 6.05° |
| Closest distance between its orbit and Earth's (MOID) | 1.08 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.