(135991) Danarmstrong Main-belt Asteroid
Discovered on 31 October 2002 by D. S. Dixon at Las Cruces.
Daniel Armstrong (b. 1944) received a BS in Mechanical Engineering from the University of Wisconsin in 1967. In the early 1980's, before CCD sensors were available to amateurs, Dan began a nearly decade-long visual observation program directed at minor planet paths and occultation events.Naming citation (MPC batch dated 2016-11-14), IAU / Minor Planet Center, via NASA/JPL
Where Danarmstrong is today
Seen from above the solar system on 2026-10-14: Danarmstrong is 2.82 au from the Sun and 3.66 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 135991 |
| Provisional designation | 2002 UY35 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.46 |
| Orbital period | 4.25 years |
| Semi-major axis | 2.62 au |
| Perihelion – aphelion | 2.15 – 3.10 au |
| Eccentricity | 0.180 |
| Inclination | 11.8° |
| Closest distance between its orbit and Earth's (MOID) | 1.17 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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