(9918) Timtrenkle Main-belt Asteroid
Discovered on 25 June 1979 by Helin, E. F., Bus, S. J. at Siding Spring.
Timothy G. Trenkle (b. 1958) contributed to NASA's Lucy Trojan asteroid mission as the Chief Engineer in the Goddard Space Flight Center Engineering Technology Directorate. He has also contributed to many other missions including ICESat, NPOESS, and MAVEN.Naming citation (WGSBN Bull. 1, #9, 9), IAU / Minor Planet Center, via NASA/JPL
Where Timtrenkle is today
Seen from above the solar system on 2026-10-14: Timtrenkle is 2.93 au from the Sun and 3.85 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9918 |
| Provisional designation | 1979 MK3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 11.4 km (#4,380 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0860 |
| Absolute magnitude (H) | 13.34 |
| Orbital period | 5.47 years |
| Semi-major axis | 3.11 au |
| Perihelion – aphelion | 2.68 – 3.53 au |
| Eccentricity | 0.136 |
| Inclination | 6.16° |
| Closest distance between its orbit and Earth's (MOID) | 1.70 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Timothy
- (4259) McCoy
- (4961) Timherder
- (7007) Timjull
- (7915) Halbrook
- (7982) Timmartin
- (8690) Swindle
- (9276) Timgrove
- (11225) Borden
- (14797) Timrose
- (16124) Timdong
- (18565) Selg
- (21423) Credo
All asteroids named after someone called Timothy
Also discovered on 25 June 1979
- (2343) Siding Spring
- (2392) Jonathan Murray
- (2441) Hibbs
- (2618) Coonabarabran
- (2619) Skalnate Pleso
- (2628) Kopal
- (2682) Soromundi
- (2704) Julian Loewe
- (3129) Bonestell
- (3205) Boksenberg
- (3756) Ruscannon
- (3817) Lencarter
More named asteroids discovered by Helin, E. F., Bus, S. J.
- (2324) Janice
- (2343) Siding Spring
- (2392) Jonathan Murray
- (2440) Educatio
- (2441) Hibbs
- (2499) Brunk
- (2611) Boyce
- (2618) Coonabarabran
- (2619) Skalnate Pleso
- (2628) Kopal
- (2682) Soromundi
- (2704) Julian Loewe
← (9917) Keynes · (9919) Undset →