(4240) Grun Main-belt Asteroid
Discovered on 2 March 1981 by S. J. Bus at Siding Spring.
Where Grun is today
Seen from above the solar system on 2026-10-14: Grun is 3.22 au from the Sun and 4.20 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4240 |
| Provisional designation | 1981 EY20 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 13.65 |
| Orbital period | 5.03 years |
| Semi-major axis | 2.94 au |
| Perihelion – aphelion | 2.61 – 3.26 au |
| Eccentricity | 0.110 |
| Inclination | 1.14° |
| Closest distance between its orbit and Earth's (MOID) | 1.60 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 2 March 1981
- (2884) Reddish
- (2919) Dali
- (2980) Cameron
- (2981) Chagall
- (2990) Trimberger
- (3000) Leonardo
- (3121) Tamines
- (3122) Florence
- (3207) Spinrad
- (3252) Johnny
- (3304) Pearce
- (3524) Schulz