187 Lamberta is a main-belt asteroid that was discovered by Corsican-born French astronomer Jérôme Eugène Coggia on April 11, 1878. It was named after the astronomer Johann Heinrich Lambert. This was the second of Coggia's five asteroid discoveries.
This object is orbiting the Sun at a distance of with a moderate eccentricity of 0.24 and an orbital period of 4.50 years. The orbital plane is inclined at an angle of 10.6ð to the plane of the ecliptic. It is spinning with a rotation period of 10.67 hours.
The spectrum matches a classification of a C-type asteroid, which may mean it has a composition of primitive carbonaceous materials. It is a dark object as indicated by the low albedo and has an estimated size of about 131 km.