(15371) Steward Main-belt Asteroid
Discovered on 15 September 1996 by Spacewatch at Kitt Peak.
The Steward Observatory, named in memory of Lavinia Steward, is the research organization associated with the department of astronomy of the University of Arizona. Besides operating telescopes at several locations, its faculty, staff and students are leaders in instrumental development and in theoretical studies.Naming citation (20040713/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Steward is today
Seen from above the solar system on 2026-10-14: Steward is 2.69 au from the Sun and 3.22 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 15371 |
| Provisional designation | 1996 RZ18 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 14.55 |
| Orbital period | 5.18 years |
| Semi-major axis | 2.99 au |
| Perihelion – aphelion | 2.65 – 3.33 au |
| Eccentricity | 0.113 |
| Inclination | 2.74° |
| Closest distance between its orbit and Earth's (MOID) | 1.64 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.