(90450) Cyriltyson Main-belt Asteroid
Discovered on 28 January 2004 by CSS at Catalina.
Cyril deGrasse Tyson (b. 1927) worked to empower those disenfranchised by the forces of politics and economics. His work in New York City government during the American Civil Rights movement and as an administrator at the City College of New York led to greater opportunities for youth in the inner city.Naming citation (20071124/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Cyriltyson is today
Seen from above the solar system on 2026-10-14: Cyriltyson is 3.40 au from the Sun and 4.14 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 90450 |
| Provisional designation | 2004 BR117 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.22 km (#12,226 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.274 |
| Rotation period | 2.18 hours |
| Absolute magnitude (H) | 14.24 |
| Orbital period | 5.69 years |
| Semi-major axis | 3.19 au |
| Perihelion – aphelion | 2.97 – 3.40 au |
| Eccentricity | 0.0684 |
| Inclination | 20.4° |
| Closest distance between its orbit and Earth's (MOID) | 2.00 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.