(3259) Brownlee Main-belt Asteroid
Discovered on 25 September 1984 by J. Platt at Palomar.
Where Brownlee is today
Seen from above the solar system on 2026-10-14: Brownlee is 2.81 au from the Sun and 3.80 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 3259 |
| Provisional designation | 1984 SZ4 |
| Orbit class | Main-belt Asteroid |
| Diameter | 25.6 km (#1,650 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.303 |
| Rotation period | 9.25 hours |
| Absolute magnitude (H) | 10.21 |
| Orbital period | 5.65 years |
| Semi-major axis | 3.17 au |
| Perihelion – aphelion | 2.81 – 3.54 au |
| Eccentricity | 0.115 |
| Inclination | 15.5° |
| Closest distance between its orbit and Earth's (MOID) | 1.83 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 25 September 1984
More named asteroids discovered by J. Platt
← (3258) Somnium · (3260) Vizbor →