(21360) Bobduff Main-belt Asteroid
Discovered on 8 April 1997 by Spacewatch at Kitt Peak.
Robert Ian Duff (b. 1946) is an amateur astronomer who has served as Librarian and Outreach Coordinator for the Royal Astronomical Society of Canada, London Centre. Name suggested and citation prepared by Robert Jedicke and Peter Jedicke.Naming citation (MPC batch dated 2016-08-18), IAU / Minor Planet Center, via NASA/JPL
Where Bobduff is today
Seen from above the solar system on 2026-10-14: Bobduff is 2.79 au from the Sun and 3.53 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21360 |
| Provisional designation | 1997 GW30 |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.84 km (#5,879 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0750 |
| Absolute magnitude (H) | 13.92 |
| Orbital period | 5.69 years |
| Semi-major axis | 3.19 au |
| Perihelion – aphelion | 2.78 – 3.60 au |
| Eccentricity | 0.129 |
| Inclination | 0.527° |
| Closest distance between its orbit and Earth's (MOID) | 1.76 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Robert
- (1955) McMath
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- (5308) Hutchison
- (5477) Holmes
- (5585) Parks
- (5636) Jacobson
- (5739) Robertburns
- (5817) Robertfrazer
All asteroids named after someone called Robert