Observations identified a natural asteroid#
Hungarian astronomer Krisztián Sárneczky first spotted 2026 QQ8 on August 20, IFLScience reports. Astronomers initially considered whether the object might be discarded space hardware rather than a natural rock. The Minor Planet Center later confirmed that it was natural, according to the outlet.iflscience.com 1 source for this line, starting with IFLScience
Follow-up observations used the Lowell Discovery Telescope and the University of Hawaii's 2.2-meter telescope, VICE reports. Those observations helped establish that the object was an asteroid rather than debris from an old rocket or satellite, according to EarthSky.vice.com+1 2 sources for this line, starting with VICE
The outlets give different estimates for the asteroid's size. VICE puts its width at about 3 feet, or 1 meter, while Space reports a diameter of about 6 feet, or 2 meters. Both describe an object much smaller than Earth's permanent moon.space.com+1 2 sources for this line, starting with Space.com
The asteroid follows a wide loop#
VICE describes the asteroid's path around Earth as a kidney-shaped loop. According to The CSR Journal, it entered Earth's Hill sphere, where the planet's gravity can control smaller objects' movement despite the sun's pull. That allowed Earth to capture it temporarily.vice.com+1 2 sources for this line, starting with VICE
IFLScience reports that the asteroid came within 537,000 kilometers, or 334,000 miles, of Earth on August 18. Space gives a different closest distance of about 568,000 kilometers, or 353,000 miles. IFLScience says there is no collision concern.space.com+1 2 sources for this line, starting with Space.com
The outlets also differ on when the temporary capture ends. IFLScience gives December 13 as the asteroid's departure date, while Space reports that it remains under Earth's gravity through December and cites modeling that points to a departure in January 2027.space.com+1 2 sources for this line, starting with Space.com



