(17196) Mastrodemos Main-belt Asteroid
Discovered on 3 December 1999 by LONEOS at Anderson Mesa.
Nickolaos Mastrodemos (b. 1964), a member of the navigation group at the Jet Propulsion Laboratory, was a key figure in the development of autonavigation on the Deep Impact mission, as well as on earlier missions to comets. He developed the targeting algorithms and carried out the testing via numerous simulations.Naming citation (20050721/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Mastrodemos is today
Seen from above the solar system on 2026-10-14: Mastrodemos is 3.00 au from the Sun and 2.04 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 17196 |
| Provisional designation | 1999 XW234 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.07 km (#7,556 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.107 |
| Rotation period | 5.27 hours |
| Absolute magnitude (H) | 14.18 |
| Orbital period | 4.62 years |
| Semi-major axis | 2.77 au |
| Perihelion – aphelion | 2.54 – 3.01 au |
| Eccentricity | 0.0838 |
| Inclination | 7.55° |
| Closest distance between its orbit and Earth's (MOID) | 1.54 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 3 December 1999
- (14223) Dolby
- (17195) Jimrichardson
- (23032) Fossey
- (23038) Jeffbaughman
- (24173) SLAS
- (24186) Shivanisud
- (25462) Haydenmetsky
- (29986) Shunsuke
- (43188) Zouxiaoduan
- (92097) Aidai