(25000) Astrometria Main-belt Asteroid
Discovered on 28 July 1998 by P. G. Comba at Prescott.
Utilized in star cataloguing that brought the discovery of (1) Ceres, then for two centuries by means of micrometry and photography, astrometry with CCD cameras began flourishing vigorously in the 1990s, through all-sky surveys and in the hands of dedicated amateurs, now doubling minor-planet numberings in less than two years.Naming citation (20010804/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Astrometria is today
Seen from above the solar system on 2026-10-14: Astrometria is 3.48 au from the Sun and 2.98 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 25000 |
| Provisional designation | 1998 OW5 |
| Orbit class | Main-belt Asteroid |
| Diameter | 17.5 km (#2,585 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0530 |
| Absolute magnitude (H) | 12.78 |
| Orbital period | 5.61 years |
| Semi-major axis | 3.16 au |
| Perihelion – aphelion | 2.83 – 3.49 au |
| Eccentricity | 0.104 |
| Inclination | 15.0° |
| Closest distance between its orbit and Earth's (MOID) | 1.84 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.