(48639) 1995 TL8 is a binary trans-Neptunian object from the scattered disc in the outermost regions of the Solar System. It was discovered by Arianna Gleason in 1995 and measures approximately 176 kilometers in diameter. Its 80-kilometer minor-planet moon, provisionally designated S/2002 (48639) 1, was discovered on 9 November 2002.
1995 TL8 and its satellite (unresolved) imaged by the Hubble Space Telescope
A relative size and distance comparison of the 1995 TL8 system with the Earth–Moon system. The scale of the Earth–Moon system has been reduced so Earth appears the same size as the 1995 TL8 primary.
Image: 1995TL8 Orbital Period
The scattered disc (or scattered disk) is a distant circumstellar disc in the Solar System that is sparsely populated by icy small Solar System bodies, which are a subset of the broader family of trans-Neptunian objects. The scattered-disc objects (SDOs) have orbital eccentricities ranging as high as 0.8, inclinations as high as 40°, and perihelia greater than 30 astronomical units (4.5×109 km; 2.8×109 mi). These extreme orbits are thought to be the result of gravitational "scattering" by the gas giants, and the objects continue to be subject to perturbation by the planet Neptune.
Eris, the largest known scattered-disc object (center), and its moon Dysnomia (left of object)
Tempel 1, a Jupiter-family comet
