Overview

• The identification and orbital analysis were published in Research Notes of the American Astronomical Society by Carlos and Raúl de la Fuente Marcos.
• Pan-STARRS in Hawaii first recorded the object on August 29, 2025, with earlier images revealing a long-standing Earth-like solar orbit with co-orbital and horseshoe dynamics.
• Distance estimates place it on average near 384,400 kilometers from Earth, with closest approaches around 299,000–299,337 kilometers.
• The object is extremely faint, producing rare visibility windows that require close approaches for detection with current telescopes.
• Experts consider it very likely a natural rocky body; it is the smallest known Earth quasi-moon, and models suggest it will remain nearby for decades, roughly 60 to perhaps 128 years.