Asteroid 2025 US6 will fly past Earth at 1.0 LD on November 22, 2025

Asteroid 2025 US6 will fly past Earth at a minimum distance of 1.0 lunar distance (0.00255 AU / 382 000 km / 237 370 miles) at 14:18 UTC on November 22, 2025. The object will be traveling at a relative velocity of 0.26 km/s at the time of its closest approach.

Based on its absolute magnitude (H = 31.008), asteroid 2025 US6 is estimated to be less than 10 m (32.8 feet) in diameter, classifying it among the smallest near-Earth asteroid discoveries.

Asteroid 2025 US6 belongs to the Aten orbital class. Its orbital elements include a low eccentricity of 0.0265, a semi-major axis of 0.961 AU, a perihelion distance of 0.935 AU, and an inclination of 0.03 degrees. This indicates a nearly circular orbit with almost no tilt relative to the ecliptic, which is relatively uncommon among near-Earth asteroids.

Physical properties such as albedo are not available for 2025 US6. It is not classified as a potentially hazardous asteroid according to current NASA definitions.

2025 US6 was first observed on October 26, 2025, and last observed on the same day, resulting in a very short observation window. The current orbit solution has a condition code of 6, indicating the trajectory remains uncertain or preliminary and may be refined with further observations.

Several other near-Earth objects have recently approached Earth within 1 lunar distance. Asteroid 2025 UV6 passed at 0.53 LD at 20:04 UTC on October 25, 2025; this object is estimated to be among the larger recent flybys, likely over 10 m (32.8 feet) in diameter. Asteroid 2025 US5 flew by at 0.61 LD at 11:08 UTC on October 25, 2025. Additionally, 2025 UG6 approached at 0.36 LD on October 23, 2025, at 23:07 UTC. These encounters contribute to ongoing study and tracking of small near-Earth objects within the lunar distance.