(19912) Aurapenenta Main-belt Asteroid
Discovered on 14 September 1955 by Indiana University at Brooklyn.
Aurapenenta honors the fiftieth anniversary of the Association of Universities for Research in Astronomy, which transformed American astronomy through its stewardship of the National Optical Astronomy Observatory, the National Solar Observatory, the Gemini Observatory and the Space Telescope Science Institute.Naming citation (20070601/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Aurapenenta is today
Seen from above the solar system on 2026-10-14: Aurapenenta is 2.91 au from the Sun and 3.51 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 19912 |
| Provisional designation | 1955 RE1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.09 km (#12,524 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.443 |
| Rotation period | 2.78 hours |
| Absolute magnitude (H) | 13.97 |
| Orbital period | 3.67 years |
| Semi-major axis | 2.38 au |
| Perihelion – aphelion | 1.78 – 2.98 au |
| Eccentricity | 0.253 |
| Inclination | 7.22° |
| Closest distance between its orbit and Earth's (MOID) | 0.772 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.