187 Lamberta is amain-beltasteroid that was discovered by Corsican-born French astronomerJérôme Eugène Coggia on April 11, 1878, and named after the astronomerJohann Heinrich Lambert. It was the second of Coggia's five asteroid discoveries.
Thespectrum matches a classification of aC-type asteroid, which may mean it has a composition of primitivecarbonaceous materials. It is a dark object as indicated by the lowalbedo and has an estimated size of about 131 km.[3]
^abcdeP. Vernazza et al. (2021) VLT/SPHERE imaging survey of the largest main-belt asteroids: Final results and synthesis.Astronomy & Astrophysics 54, A56
^abcPravec, P.; et al. (May 2012), "Absolute Magnitudes of Asteroids and a Revision of Asteroid Albedo Estimates from WISE Thermal Observations",Asteroids, Comets, Meteors 2012, Proceedings of the conference held May 16–20, 2012 in Niigata, Japan, no. 1667,Bibcode:2012LPICo1667.6089P. See Table 4.