(21190) Martamaffei Main-belt Asteroid
Discovered on 10 May 1994 by A. Vagnozzi at Stroncone.
Marta Maffei (b. 1957) is the founder of a cultural center for the promotion of scientific studies dedicated to her father, the Italian astronomer Paolo Maffei. She is active in the cultural life of the city of Foligno, and she is a member of the Fulginia Academy of Arts, Letters and Sciences.Naming citation (WGSBN Bull. 2, #13, 6), IAU / Minor Planet Center, via NASA/JPL
Where Martamaffei is today
Seen from above the solar system on 2026-10-14: Martamaffei is 2.67 au from the Sun and 3.58 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21190 |
| Provisional designation | 1994 JQ |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.60 km (#16,075 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.288 |
| Absolute magnitude (H) | 15.21 |
| Orbital period | 4.04 years |
| Semi-major axis | 2.54 au |
| Perihelion – aphelion | 2.40 – 2.67 au |
| Eccentricity | 0.0533 |
| Inclination | 2.32° |
| Closest distance between its orbit and Earth's (MOID) | 1.41 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Marta
All asteroids named after someone called Marta