7638 Gladman
7638 Gladman is a small, stony asteroid in the middle of the asteroid belt, about 5.8 kilometers across. It was discovered on 26 October 1984 by American astronomer Edward Bowell at the Anderson Mesa Station near Flagstaff, Arizona, and was named after Canadian astronomer Brett J. Gladman.
It is a background asteroid, not part of any asteroid family. Gladman orbits the Sun every about 4.05 years, ranging from roughly 1.75 to 3.33 astronomical units. Its orbit is moderately inclined (around 6.8 degrees) and fairly elongated (eccentricity ~0.31). It sits near the region of a Jupiter resonance at 2.5 AU but has a less extreme orbit than many objects in that area.
The asteroid is classified as S-type (stony), with some data placing it in the Sk group. It rotates once every about 17.3 hours. Size and reflectivity come from infrared observations by the WISE/NEOWISE mission, giving a diameter near 5.84 km and an albedo around 0.248 (about 25% of sunlight reflected).
Gladman was first observed in 1969 (as 1969 AF), and the official naming citation was published in 1999.
This page was last edited on 3 February 2026, at 04:48 (CET).