(3440) Stampfer Main-belt Asteroid
Discovered on 17 February 1950 by K. Reinmuth at Heidelberg.
Where Stampfer is today
Seen from above the solar system on 2026-10-14: Stampfer is 2.70 au from the Sun and 3.30 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 3440 |
| Provisional designation | 1950 DD |
| Orbit class | Main-belt Asteroid |
| Diameter | 10.6 km (#4,777 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.173 |
| Spectral type | X |
| Absolute magnitude (H) | 12.67 |
| Orbital period | 4.69 years |
| Semi-major axis | 2.80 au |
| Perihelion – aphelion | 2.64 – 2.97 au |
| Eccentricity | 0.0590 |
| Inclination | 7.54° |
| Closest distance between its orbit and Earth's (MOID) | 1.63 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 17 February 1950
- (1611) Beyer
- (1719) Jens
- (2265) Verbaandert
- (2572) Annschnell
- (3295) Murakami
- (5658) Clausbaader
- (5704) Schumacher