(18377) Vetter Main-belt Asteroid
Discovered on 28 September 1991 by R. H. McNaught at Siding Spring.
John Francis Vetter (b. 1945) is a retired Australian automotive mechanic. He established the Mudgee Observatory in 2005 and through it shares his love of astronomy with the public and amateur astronomers.Naming citation (WGSBN Bull. 2, #1, 7), IAU / Minor Planet Center, via NASA/JPL
Where Vetter is today
Seen from above the solar system on 2026-10-14: Vetter is 3.01 au from the Sun and 3.29 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18377 |
| Provisional designation | 1991 SH1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 10.8 km (#4,678 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0600 |
| Absolute magnitude (H) | 13.57 |
| Orbital period | 4.14 years |
| Semi-major axis | 2.58 au |
| Perihelion – aphelion | 2.07 – 3.08 au |
| Eccentricity | 0.195 |
| Inclination | 14.0° |
| Closest distance between its orbit and Earth's (MOID) | 1.06 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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