(13249) Marcallen Main-belt Asteroid
Discovered on 18 June 1998 by LONEOS at Anderson Mesa.
Marc Allen (b. 1951) is a stellar and solar astronomer who has directed the Space Studies Board of the U.S. National Research Council (1991-1999) and is currently Assistant Associate Administrator for Strategic and International Planning at NASA. The name was suggested by L. A. McFadden, L. J. Lanzerotti and C. R. Canizares.Naming citation (20010705/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Marcallen is today
Seen from above the solar system on 2026-10-14: Marcallen is 2.60 au from the Sun and 3.32 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 13249 |
| Provisional designation | 1998 MD38 |
| Orbit class | Main-belt Asteroid |
| Diameter | 20.8 km (#2,102 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0630 |
| Rotation period | 90.1 hours |
| Absolute magnitude (H) | 12.21 |
| Orbital period | 4.37 years |
| Semi-major axis | 2.67 au |
| Perihelion – aphelion | 2.23 – 3.12 au |
| Eccentricity | 0.167 |
| Inclination | 14.1° |
| Closest distance between its orbit and Earth's (MOID) | 1.26 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Marc
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All asteroids named after someone called Marc