XO-2 (disambiguation) explained
XO-2 is a star.
XO-2 may also refer to:
- XO-2Nb, an extrasolar planet orbiting XO-2.
- OLPC XO-2, a design study of the One Laptop per Child computer
- Douglas XO-2, a variant of the Douglas O-2 U.S. Army Air Corps interwar observation plane
See also
