380550

380550 is a numbered minor planet located in the main asteroid belt between Mars and Jupiter. It was discovered on 28 February 2007 by the Lincoln Near-Earth Asteroid Research (LINEAR) program at the Lincoln Laboratory's Experimental Test Site in Socorro, New Mexico. The provisional designation 2007 DH138 was assigned following its discovery observations before the object received its permanent number.

The asteroid's orbit is characterized by a semi-major axis of approximately 2.5 astronomical units, placing it in the central portion of the belt. Its orbital period is about 4.0 years, and it has an eccentricity of roughly 0.12, indicating a slightly elongated orbit. The inclination relative to the ecliptic is 7.5°, which is typical for main-belt bodies of its size. These orbital elements place 380550 in the background population rather than in a prominent asteroid family.

Photometric studies conducted by the Collaborative Asteroid Lightcurve Astrometry Survey (CALL) suggest that 380550 has a rotation period of around 3.5 hours, though the data is sparse and further observations are needed for a definitive lightcurve. The asteroid’s absolute magnitude is listed as 15.8; assuming an albedo between 0.05 and 0.25, its diameter is estimated to lie between 2 and 5 kilometers.

Because 380550 has not been observed spectroscopically, its taxonomic classification is unknown. However, its moderate albedo range and main-belt location suggest a likely C-type or S-type composition, common among asteroids in this region. No significant non-gravitational forces or close encounters with major planets have been recorded for this object.

As of the latest data releases, 380550 remains a typical, faint main-belt asteroid with no special features that have attracted particular scientific attention. Its orbit is stable, and it continues to be tracked by survey programs to refine its orbital parameters and physical characteristics.