(368617) Sebastianotero Main-belt Asteroid
Discovered on 5 October 2004 by Cooney Jr., W. R., Gross, J. at Sonoita.
Sebastián Otero (b. 1973) is an active amateur astronomer in Argentina who is well known for extremely precise visual observations of bright stars. He is also a researcher with many publications, one of the moderators of the AAVSO Variable Star Index, and a strong advocate for astronomy in the Spanish-speaking community.Naming citation (WGSBN Bull. 4, #15, 5), IAU / Minor Planet Center, via NASA/JPL
Where Sebastianotero is today
Seen from above the solar system on 2026-10-14: Sebastianotero is 3.04 au from the Sun and 3.87 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 368617 |
| Provisional designation | 2004 TM10 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 16.58 |
| Orbital period | 4.71 years |
| Semi-major axis | 2.81 au |
| Perihelion – aphelion | 2.42 – 3.19 au |
| Eccentricity | 0.137 |
| Inclination | 4.84° |
| Closest distance between its orbit and Earth's (MOID) | 1.42 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Sebastian
All asteroids named after someone called Sebastian