(17403) Masciarelli Main-belt Asteroid
Discovered on 6 March 1986 by G. De Sanctis at La Silla.
Clodoveo Masciarelli (b. 1955) is a doctor, artist and amateur astronomer. He has dedicated his life to astronomy and its popularization, building a small observatory and making it available to the public. The inspiration for his art is linked to the cosmos.Naming citation (MPC batch dated 2016-03-23), IAU / Minor Planet Center, via NASA/JPL
Where Masciarelli is today
Seen from above the solar system on 2026-10-14: Masciarelli is 2.62 au from the Sun and 3.61 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 17403 |
| Provisional designation | 1986 EL5 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.80 km (#7,872 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.152 |
| Absolute magnitude (H) | 13.32 |
| Orbital period | 4.04 years |
| Semi-major axis | 2.54 au |
| Perihelion – aphelion | 2.34 – 2.74 au |
| Eccentricity | 0.0797 |
| Inclination | 5.21° |
| Closest distance between its orbit and Earth's (MOID) | 1.36 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.