(20506) Mammana Main-belt Asteroid
Discovered on 7 September 1999 by LINEAR at Socorro.
Luis Mammana (b. 1962) is an Argentinian vice-director of the El Leoncito Astronomical Complex, which runs astronomical facilities in the province of San Juan, Argentina. He does observational research on minor bodies of the Solar System and other branches of astronomy. Luis is an active collaborator in the network of observers of stellar occultations.Naming citation (WGSBN Bull. 6, #11, 24), IAU / Minor Planet Center, via NASA/JPL
Where Mammana is today
Seen from above the solar system on 2026-10-14: Mammana is 2.69 au from the Sun and 3.34 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20506 |
| Provisional designation | 1999 RO17 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.66 km (#8,049 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0790 |
| Absolute magnitude (H) | 14.54 |
| Orbital period | 4.07 years |
| Semi-major axis | 2.55 au |
| Perihelion – aphelion | 2.05 – 3.05 au |
| Eccentricity | 0.195 |
| Inclination | 12.5° |
| Closest distance between its orbit and Earth's (MOID) | 1.08 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Luis
- (4725) Milone
- (5160) Camoes
- (11711) Urquiza
- (17489) Trenker
- (19395) Barrera
- (19595) Lafer-Sousa
- (20696) Torresduarte
- (29298) Cruls
- (780857) Rodes
All asteroids named after someone called Luis
Also discovered on 7 September 1999
- (12126) Chersidamas
- (12577) Samra
- (12578) Bensaur
- (12585) Katschwarz
- (12586) Juliaspeyer
- (12588) Arseneau
- (12604) Lisatate
- (12924) Madisonicole
- (13818) Ullery
- (14214) Hirsch
- (15503) Estradioto
- (16067) Brandonfan