(8378) Sweeney Main-belt Asteroid
Discovered on 23 September 1992 by E. F. Helin at Palomar.
During 1990-2000, Donal F. Sweeney (b. 1933) was director of the Jet Propulsion Laboratory's Occupational Health Services. Always a compassionate and caring physician, JPL employees appreciated his medical advice and enjoyed his quick wit.Naming citation (20010509/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
👶 Sweeney as a baby name🐶 Sweeney as a dog name
Where Sweeney is today
Seen from above the solar system on 2026-10-14: Sweeney is 2.52 au from the Sun and 3.07 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 8378 |
| Provisional designation | 1992 SN1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.73 km (#6,845 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.229 |
| Rotation period | 12.0 hours |
| Absolute magnitude (H) | 13.88 |
| Orbital period | 4.13 years |
| Semi-major axis | 2.57 au |
| Perihelion – aphelion | 2.04 – 3.10 au |
| Eccentricity | 0.206 |
| Inclination | 15.1° |
| Closest distance between its orbit and Earth's (MOID) | 1.06 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 23 September 1992
- (7188) Yoshii
- (7250) Kinoshita
- (8377) Elmerreese
- (8382) Mann
- (8526) Takeuchiyukou
- (10351) Seiichisato
- (10801) Luneburg
- (11074) Kuniwake
- (11075) Donhoff
- (11915) Nishiinoue
- (12329) Liebermann
- (13561) Kudogou