(85558) Tianjinshida Main-belt Asteroid
Discovered on 3 January 1998 by Beijing Schmidt CCD Asteroid Program at Xinglong.
Founded in 1958, Tianjinshida (Tianjin Normal University) is a key comprehensive university in Tianjin, with more than 30 000 enrolled students. The university's Tianjin Astrophysics Center offers the only astronomy program among some 60 higher-education institutions in the megalopolis.Naming citation (WGSBN Bull. 1, #6, 5), IAU / Minor Planet Center, via NASA/JPL
Where Tianjinshida is today
Seen from above the solar system on 2026-10-14: Tianjinshida is 2.99 au from the Sun and 3.38 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 85558 |
| Provisional designation | 1998 AB3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.92 km (#6,669 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0540 |
| Absolute magnitude (H) | 14.18 |
| Orbital period | 5.70 years |
| Semi-major axis | 3.19 au |
| Perihelion – aphelion | 2.70 – 3.68 au |
| Eccentricity | 0.154 |
| Inclination | 9.45° |
| Closest distance between its orbit and Earth's (MOID) | 1.73 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.