Asteroid 2026 QQ8 Captured as Earth's Temporary Moon Until December

The minor asteroid designated 2026 QQ8 entered Earth’s orbit last April but was not detected until August. This celestial body now functions as a temporary moon for our planet, having completed one full revolution around the Sun every 359 days. It approaches Earth approximately once every ten years, and its recent close encounter allowed terrestrial gravity to capture it temporarily.

Orbital Mechanics of Asteroid QQ8

According to the International Astronomical Union’s Minor Planet Center, the object will continue circling Earth until next December. Following this period, it is scheduled to leave Earth’s orbital zone in 2027. The asteroid’s solar year lasts roughly 0.98 Earth years, based on calculations of its 359-day cycle.

Astronomers first observed the body in August 2026, despite its earlier arrival in April. Its trajectory brought it within about 568,000 kilometers of Earth. This distance exceeds the average gap between Earth and the Moon by approximately 177,000 kilometers. With a diameter not exceeding two meters, experts suggest the rock would likely burn up completely in the atmosphere if it were on a collision course with the surface.

Comparison to Typical Temporary Moons

QQ8 stands out because it is larger than standard temporary moons. Models indicate that a typical temporary satellite measures about 75 centimeters in diameter and remains near Earth for roughly nine months. Objects measuring around three meters across can stay in orbit for periods ranging from 10 to 20 years.

This event is not unprecedented. A study conducted last year noted that up to six small moons could orbit Earth simultaneously at any given time. Many of these bodies are believed to be fragments originating from the Moon itself. The current companion has accompanied Earth since 100 BC and is predicted to remain in rotation around us until the year 3700.