Asteroid 2013 GM3 will fly past Earth at 0.68 LD on April 14, 2026

A near-Earth asteroid, designated 2013 GM3, will fly past Earth at a distance of 0.68 lunar distances (LD) or 0.00174 astronomical units (AU), equivalent to roughly 256 000 km (159 021 miles), at 16:15 UTC on April 14, 2026. During close approach, 2013 GM3 will travel at a relative velocity of 7.41 km/s.

Based on its absolute magnitude (H) of 26.3, the asteroid’s estimated diameter is approximately 15–35 m (49–115 feet), according to standard asteroid size calculations.

Asteroid 2013 GM3 is classified as an Aten-type near-Earth object. Its orbit is characterized by an eccentricity of 0.287, a semi-major axis of 0.836 AU, perihelion distance of 0.596 AU, and a notably low orbital inclination of 0.0176 degrees. These parameters indicate a moderately eccentric but nearly planar orbit compared to typical near-Earth asteroids.

The physical properties such as surface reflectivity (albedo) for 2013 GM3 have not been specified. It is not classified as a potentially hazardous asteroid (PHA).

2013 GM3 was first observed on April 1, 2013, and last detected on April 13, 2013, amounting to a 12-day observation arc. The current orbital solution carries a condition code of 7, reflecting an uncertain or preliminary trajectory that may be refined with future observations.

Other notable recent close approaches within 1 lunar distance include asteroid 2013 GM3 itself, which will come within 0.02 LD of Earth at 16:15 UTC on April 14, 2026; asteroid 2026 CE, passing at 0.30 LD at 18:18 UTC on February 4, 2026; and asteroid 2026 CS1, passing at 0.24 LD at 08:22 UTC on February 7, 2026. These objects typically range from a few meters to several meters in diameter, with varying approach velocities.