(13405) Dorisbillings Main-belt Asteroid
Discovered on 21 September 1999 by G. W. Billings at Calgary.
Doris Billings, née Dora Kawchuk (b. 1925), is the mother of the discoverer. Some of his earliest memories are of her fascination with space.Naming citation (20010309/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Dorisbillings is today
Seen from above the solar system on 2026-10-14: Dorisbillings is 2.45 au from the Sun and 2.54 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 13405 |
| Provisional designation | 1999 ST1 |
| Orbit class | Main-belt Asteroid |
| Rotation period | 11.7 hours |
| Absolute magnitude (H) | 13.95 |
| Orbital period | 3.48 years |
| Semi-major axis | 2.29 au |
| Perihelion – aphelion | 2.07 – 2.52 au |
| Eccentricity | 0.0983 |
| Inclination | 4.83° |
| 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 Doris
All asteroids named after someone called Doris
Also discovered on 21 September 1999
More named asteroids discovered by G. W. Billings
← (13404) Norris · (13406) Sekora →