(5106) Mortensen Main-belt Asteroid
Discovered on 19 February 1987 by P. Jensen at Brorfelde.
Inger Mortensen (b. 1910) is an aunt of Brorfelde observer Karl Augustesen.Naming citation (20000320/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Mortensen is today
Seen from above the solar system on 2026-10-14: Mortensen is 2.69 au from the Sun and 2.13 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5106 |
| Provisional designation | 1987 DJ |
| Orbit class | Main-belt Asteroid |
| Diameter | 14.5 km (#3,263 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.141 |
| Absolute magnitude (H) | 12.3 |
| Orbital period | 5.25 years |
| Semi-major axis | 3.02 au |
| Perihelion – aphelion | 2.65 – 3.39 au |
| Eccentricity | 0.122 |
| Inclination | 10.9° |
| Closest distance between its orbit and Earth's (MOID) | 1.68 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.