(5517) Johnerogers Main-belt Asteroid
Discovered on 4 June 1989 by E. F. Helin at Palomar.
Named in honor of John E. Rogers, Range Safety Officer at Point Mugu, California, and an amateur astronomer long known for his computer software and for his computation of orbits. More recently he has developed an astrometric system using a CCD camera and related software that he expertly uses at his home in Camarillo. The discoverer acknowledges his unstinting assistance in using this equipment to obtain crucial observations of newly-discovered near-Earth objects, and from time to time he has also joined the discoverer's team at Palomar to search for them. Name proposed by the discoverer, endorsed by K. Lawrence, B. G. Marsden and G. V. Williams.Naming citation (WGSBN Bull. 5, #28, 5), IAU / Minor Planet Center, via NASA/JPL
Where Johnerogers is today
Seen from above the solar system on 2026-10-14: Johnerogers is 2.30 au from the Sun and 3.25 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5517 |
| Provisional designation | 1989 LJ |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.01 km (#8,920 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.371 |
| Absolute magnitude (H) | 13.21 |
| Orbital period | 4.17 years |
| Semi-major axis | 2.59 au |
| Perihelion – aphelion | 2.29 – 2.89 au |
| Eccentricity | 0.115 |
| Inclination | 14.4° |
| Closest distance between its orbit and Earth's (MOID) | 1.32 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called John
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- (5362) Johnyoung
- (5558) Johnnapier
- (5653) Camarillo
All asteroids named after someone called John