(25154) Ayers Main-belt Asteroid
Discovered on 16 September 1998 by LONEOS at Anderson Mesa.
Robert Martin Ayers (b. 1941) is a long-time supporter of Lowell Observatory, currently serving as secretary of the Executive Committee and a multi-year member of the Advisory Board. He spent the summer at Lowell as an undergraduate in 1961. He retired as principal scientist from Adobe in 2005.Naming citation (MPC batch dated 2016-11-14), IAU / Minor Planet Center, via NASA/JPL
Where Ayers is today
Seen from above the solar system on 2026-10-14: Ayers is 3.15 au from the Sun and 2.65 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 25154 |
| Provisional designation | 1998 SZ54 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.46 km (#7,138 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0730 |
| Absolute magnitude (H) | 14.34 |
| Orbital period | 5.43 years |
| Semi-major axis | 3.09 au |
| Perihelion – aphelion | 2.61 – 3.57 au |
| Eccentricity | 0.156 |
| Inclination | 1.63° |
| Closest distance between its orbit and Earth's (MOID) | 1.59 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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