(554268) Marksylvester Main-belt Asteroid
Discovered on 26 September 2012 by T. Vorobjov at Mount Lemmon SkyCe.
Mark Lyle George Sylvester (b. 1952, South Africa) joined United World College of the Adriatic in 1983 and has been instrumental in its development since its early years. Renowned for his adventurous teaching methods, Mark has inspired several generations of students with his innovative approach to learning, both inside and outside the physics lab.Naming citation (WGSBN Bull. 4, #11, 20), IAU / Minor Planet Center, via NASA/JPL
Where Marksylvester is today
Seen from above the solar system on 2026-10-14: Marksylvester is 2.43 au from the Sun and 1.79 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 554268 |
| Provisional designation | 2012 SD77 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 17.35 |
| Orbital period | 4.55 years |
| Semi-major axis | 2.75 au |
| Perihelion – aphelion | 2.31 – 3.18 au |
| Eccentricity | 0.158 |
| Inclination | 7.51° |
| Closest distance between its orbit and Earth's (MOID) | 1.32 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Mark
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- (7778) Markrobinson
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- (10276) Matney
- (10598) Markrees
- (12094) Mazumder
- (13211) Stucky
All asteroids named after someone called Mark