designation: 1948 OA) is an asteroid and near-Earth object of the Apollo group on an eccentric orbit.

It was discovered on 17 July 1948, by American astronomer Carl Wirtanen at Lick Observatory on Mount Hamilton, California.

[3][20] The stony S-type asteroid has a rotation period of 10.2 hours and measures approximately 4 kilometers (2.5 miles) in diameter.

A study of long-term stability shows that the alternating resonances will possibly be broken roughly 3 million years from now because of close approaches between Toro and Mars.

[26] In the Tholen and SMASS taxonomic scheme, Toro is characterized as a stony S-type asteroid.