Asteroid 2025 US6 will fly past Earth at 0.36 LD on November 13, 2025.

Asteroid 2025 US6 will fly past Earth at a minimum distance of 0.36 lunar distances (LD), equivalent to 0.00091 astronomical units (AU), or approximately 136 500 km (84 850 miles), at 07:01 UTC on November 13, 2025. The object will pass Earth at a relative velocity of 2.08 km/s at the moment of closest approach.

Based on its absolute magnitude (H) of 31.0, asteroid 2025 US6 is estimated to be between 2 and 5 m (6.6 to 16.4 feet) in diameter, assuming an average albedo typical for small near-Earth objects.

Asteroid 2025 US6 belongs to the Aten group of near-Earth objects. Its orbit exhibits very low eccentricity (e = 0.0265) and has a semi-major axis of 0.961 AU. The perihelion distance is 0.935 AU, and its orbit is inclined only 0.03° with respect to the ecliptic plane. These parameters indicate a near-circular, low-inclination orbit, which is less eccentric than most near-Earth asteroids.

The object is not classified as potentially hazardous (PHA) due to its small size and orbital parameters.

2025 US6 was first observed on October 26, 2025, and last observed on the same date, indicating a very short observation arc. The orbit solution currently has a condition code of 6, which suggests the trajectory remains uncertain or preliminary and may require refinement with additional data.

Several other objects have made close approaches within 1 lunar distance in the same general time period. For example, asteroid 2025 US6 will also approach Earth at 0.00 LD at 06:40 UTC on December 2, 2025, and at 0.39 LD at 02:33 UTC on October 28, 2025. Another recent notable close approach was by asteroid 2025 UJ4, which passed at 0.16 LD at 21:30 UTC on October 21, 2025, and has an estimated diameter of 5–12 m (16.4–39.4 feet).