2017 MB7 is a trans-Neptunian object and damocloid on a cometary-like orbit from the outer Solar System, approximately 6 kilometers (4 miles) in diameter.

It was first observed on 22 June 2017 by the Pan-STARRS survey at Haleakala Observatory in Hawaii, United States.

[4] The Johnston's Archive groups it to the damocloids,[3] due to its extreme orbital elements and a TJupiter of less than 2, while in JPL's Small Body Database, it is a trans-Neptunian object with a semi-major axis larger than that of Neptune.

The Johnston's Archive assumes a generic distant-object albedo of 0.09 and calculates a diameter of 8 kilometers.

[3] Like other distant objects, it is probably also fairly red in appearance due to tholins on its surface.