(129188) Dangallagher Main-belt Asteroid
Discovered on 17 June 2005 by Mt. Lemmon Survey at Mount Lemmon.
Daniel Gallagher (b. 1980) is a Multimedia Producer at NASA's Goddard Spaceflight Center. He is supporting the OSIRIS-REx Asteroid Sample Return Mission with videos, animations and other media products.Naming citation (MPC batch dated 2016-11-14), IAU / Minor Planet Center, via NASA/JPL
Where Dangallagher is today
Seen from above the solar system on 2026-10-14: Dangallagher is 2.45 au from the Sun and 3.33 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 129188 |
| Provisional designation | 2005 MM4 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.98 km (#12,779 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0640 |
| Absolute magnitude (H) | 15.89 |
| Orbital period | 4.44 years |
| Semi-major axis | 2.70 au |
| Perihelion – aphelion | 2.34 – 3.07 au |
| Eccentricity | 0.135 |
| Inclination | 12.7° |
| Closest distance between its orbit and Earth's (MOID) | 1.34 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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