(5477) Holmes Inner Main-belt Asteroid
Discovered on 27 October 1989 by E. F. Helin at Palomar.
Amateur astronomer Robert E. Holmes Jr. (b.~1956) directs the Astronomical Research Observatory in Westfield, Illinois. The name was suggested by S. Foglia.Naming citation (20110218/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
👶 Holmes as a baby name🐶 Holmes as a dog name
Where Holmes is today
Seen from above the solar system on 2026-10-14: Holmes is 1.78 au from the Sun and 0.987 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5477 |
| Provisional designation | 1989 UH2 |
| Orbit class | Inner Main-belt Asteroid |
| Diameter | 3.15 km (#14,839 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.310 |
| Rotation period | 2.99 hours |
| Absolute magnitude (H) | 14.29 |
| Orbital period | 2.65 years |
| Semi-major axis | 1.92 au |
| Perihelion – aphelion | 1.77 – 2.06 au |
| Eccentricity | 0.0755 |
| Inclination | 22.5° |
| Closest distance between its orbit and Earth's (MOID) | 0.841 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Robert
- (1955) McMath
- (3514) Hooke
- (3875) Staehle
- (4564) Clayton
- (4809) Robertball
- (5109) Robertmiller
- (5308) Hutchison
- (5585) Parks
- (5636) Jacobson
- (5739) Robertburns
- (5817) Robertfrazer
- (5871) Bobbell
All asteroids named after someone called Robert
Also discovered on 27 October 1989
More named asteroids discovered by E. F. Helin
- (1982) Cline
- (2048) Dwornik
- (2050) Francis
- (2062) Aten
- (2074) Shoemaker
- (2083) Smither
- (2099) Opik
- (2100) Ra-Shalom
- (2128) Wetherill
- (2143) Jimarnold
- (2220) Hicks
- (2335) James
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