(31491) Demessie Main-belt Asteroid
Discovered on 10 February 1999 by LINEAR at Socorro.
Bluye DeMessie (b. 1997) was awarded second place in the 2014 Intel International Science and Engineering Fair for his environmental management project. He attends the William Mason High School, Mason, Ohio, U.S.A.Naming citation (MPC batch dated 2015-07-02), IAU / Minor Planet Center, via NASA/JPL
Where Demessie is today
Seen from above the solar system on 2026-10-14: Demessie is 2.47 au from the Sun and 3.42 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 31491 |
| Provisional designation | 1999 CF57 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.94 km (#15,366 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.389 |
| Absolute magnitude (H) | 14.77 |
| Orbital period | 3.85 years |
| Semi-major axis | 2.46 au |
| Perihelion – aphelion | 2.44 – 2.47 au |
| Eccentricity | 0.00752 |
| Inclination | 3.13° |
| Closest distance between its orbit and Earth's (MOID) | 1.43 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 10 February 1999
- (10939) Maheshwari
- (10942) Natashamaniar
- (11197) Beranek
- (11407) Madsubramanian
- (15083) Tianhuili
- (15088) Licitra
- (15492) Nyberg
- (16012) Jamierubin
- (16013) Schmidgall
- (16014) Sinha
- (16015) Snell
- (16016) Boylan