(690780) Constantinescu Main-belt Asteroid
Discovered on 3 June 2014 by EURONEAR at La Palma.
Radu Dan Constantinescu (b. 1955) is a Professor of Physics at the University of Craiova, Romania. He has worked in nonlinear dynamical systems, constrained dynamics, gauge field theory, mathematical models, and astrophysics, serving as Secretary General of the Romanian Physical Society and current President of the Balkan Physical Union.Naming citation (WGSBN Bull. 4, #12, 17), IAU / Minor Planet Center, via NASA/JPL
Where Constantinescu is today
Seen from above the solar system on 2026-10-14: Constantinescu is 2.88 au from the Sun and 1.98 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 690780 |
| Provisional designation | 2014 LJ38 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 17.19 |
| Orbital period | 5.66 years |
| Semi-major axis | 3.18 au |
| Perihelion – aphelion | 2.85 – 3.51 au |
| Eccentricity | 0.104 |
| Inclination | 10.8° |
| Closest distance between its orbit and Earth's (MOID) | 1.85 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.