1139 Atami
Asteroid
1139 Atami, provisional designation 1929 XE, is a stony asteroid and sizable Mars-crosser, as well as a synchronous binary system near the innermost region of the asteroid belt, approximately 9 kilometers in diameter. Wikipedia
Discovered: December 1, 1929
Discoverers: Kazuo Kubokawa and Okuro Oikawa
Discovery site: Tokyo Astronomical Observatory
Orbital period: 993 days
Orbits: Sun
Absolute magnitude: 12.51