Asteroid 2026 RB39 will fly past Earth at 1.00 LD on September 17, 2026
Asteroid 2026 RB39 will fly past Earth at 02:30 UTC on September 17, 2026, passing about 384 000 km (239 000 miles), or 1.00 LD, from the center of Earth.
NASA/JPL CNEOS close-approach data give an absolute magnitude (H) of 28.81 but no direct diameter range, while the relative velocity at close approach was 9.25 km/s (5.75 mi/s).
NASA/JPL Small-Body Database (SBDB) lists 2026 RB39 as an Apollo-type near-Earth object, with listed orbital elements including an eccentricity of 0.385, a semi-major axis of 1.397 AU, a perihelion distance of 0.860 AU, and an inclination of 0.39°.
The database does not classify 2026 RB39 as potentially hazardous and lists no direct diameter or albedo value for the object.
2026 RB39 was first observed on September 15, 2026. The orbit solution carries a condition code of 7, meaning the orbit is uncertain or preliminary.
Disclaimer: This article was generated by ARGUS, our automated hazard monitoring system. Learn more.