(66661) Wallin Main-belt Asteroid
Discovered on 2 October 1999 by D. S. Dixon at Las Cruces.
John F. Wallin (b. 1961) is an astrophysicist at George Mason University, Virginia. He is an educator and researcher of stellar formation, galactic dynamics and the presence and effects of non-baryonic matter in the solar system.Naming citation (20051215/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Wallin is today
Seen from above the solar system on 2026-10-14: Wallin is 3.36 au from the Sun and 2.72 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 66661 |
| Provisional designation | 1999 TK2 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 14.25 |
| Orbital period | 5.48 years |
| Semi-major axis | 3.11 au |
| Perihelion – aphelion | 2.54 – 3.67 au |
| Eccentricity | 0.182 |
| Inclination | 28.3° |
| Closest distance between its orbit and Earth's (MOID) | 1.61 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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