(4693) Drummond Main-belt Asteroid
Discovered on 28 November 1983 by E. Bowell at Anderson Mesa.
Named in honor of Jack D. Drummond of the Steward Observatory, University of Arizona. Drummond's analysis of orbital similarities led to the identification of a cometary parent for the Epsilon Geminids and to the identification of streams among near-Earth asteroids. He has done extensive analysis of asteroid lightcurves to find pole directions and shapes for more than 25 objects, as well as studies of phase curves which suggest the existence of both rough and smooth surfaces among the asteroids. As one of the first to apply speckle interferometry to these bodies, he developed many theoretical contributions to the analysis of speckle data and produced the first speckle images showing features on the surface of an asteroid, namely, that of (4) Vesta. His enthusiasm for studies of asteroids, comets and meteors has made him a pleasurable colleague for collaborative efforts. Citation provided by Donald R. Davis at the request of the discoverer.Naming citation (WGSBN Bull. 5, #28, 5), IAU / Minor Planet Center, via NASA/JPL
Where Drummond is today
Seen from above the solar system on 2026-10-14: Drummond is 2.43 au from the Sun and 3.26 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4693 |
| Provisional designation | 1983 WH |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.81 km (#10,998 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.366 |
| Rotation period | 33.1 hours |
| Absolute magnitude (H) | 13.75 |
| Orbital period | 3.44 years |
| Semi-major axis | 2.28 au |
| Perihelion – aphelion | 2.09 – 2.47 au |
| Eccentricity | 0.0834 |
| Inclination | 4.86° |
| Closest distance between its orbit and Earth's (MOID) | 1.11 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Jack
- (4600) Meadows
- (11409) Horkheimer
- (11443) Youdale
- (12909) Jaclifford
- (14511) Nickel
- (16016) Boylan
- (16055) Dellisanti
- (20023) Jackmegas
- (20489) Lissauer
- (22707) Jackgrundy
- (26647) Brabham
- (26938) Jackli
All asteroids named after someone called Jack
Also discovered on 28 November 1983
- (3262) Miune
- (3758) Karttunen
- (4200) Shizukagozen
- (4247) Grahamsmith
- (5226) Pollack
- (7923) Chyba
- (8146) Jimbell
- (10288) Saville
- (10484) Hecht
More named asteroids discovered by E. Bowell
- (2246) Bowell
- (2264) Sabrina
- (2270) Yazhi
- (2316) Jo-Ann
- (2356) Hirons
- (2357) Phereclos
- (2383) Bradley
- (2409) Chapman
- (2410) Morrison
- (2411) Zellner
- (2421) Nininger
- (2432) Soomana
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