(15550) Sydney Main-belt Asteroid
Discovered on 31 March 2000 by J. Broughton at Reedy Creek.
Australia's largest city, Sydney is also the birthplace of the discoverer of this minor planet. Established by the British in 1788, Sydney was the first European settlement in Australasia and is famous for its magnificent opera house, harbor, sandy beaches and as host city of the 2000 Olympics.Naming citation (20010509/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
👶 Sydney as a baby name🐶 Sydney as a dog name🐱 Sydney as a cat name
Where Sydney is today
Seen from above the solar system on 2026-10-14: Sydney is 2.82 au from the Sun and 3.33 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 15550 |
| Provisional designation | 2000 FR10 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.72 km (#6,853 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.205 |
| Absolute magnitude (H) | 13.33 |
| Orbital period | 5.13 years |
| Semi-major axis | 2.97 au |
| Perihelion – aphelion | 2.61 – 3.34 au |
| Eccentricity | 0.123 |
| Inclination | 9.61° |
| Closest distance between its orbit and Earth's (MOID) | 1.62 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.