(2143) Jimarnold Main-belt Asteroid
Discovered on 26 September 1973 by E. F. Helin at Palomar.
Where Jimarnold is today
Seen from above the solar system on 2026-10-14: Jimarnold is 2.74 au from the Sun and 3.61 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2143 |
| Provisional designation | 1973 SA |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.93 km (#10,733 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.138 |
| Absolute magnitude (H) | 13.77 |
| Orbital period | 3.45 years |
| Semi-major axis | 2.28 au |
| Perihelion – aphelion | 1.75 – 2.82 au |
| Eccentricity | 0.234 |
| Inclination | 8.37° |
| Closest distance between its orbit and Earth's (MOID) | 0.746 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 26 September 1973
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
- (2220) Hicks
- (2335) James
- (2645) Daphne Plane
← (2142) Landau · (2144) Marietta →