| Minorplanet: | yes |
| Mpc Name: | (187) Lamberta |
| Background: |
|
| 187 Lamberta | |
| Alt Names: | A878 GB; 1946 LB; 1948 XR |
| Discoverer: | J. Coggia, 1878 |
| Semimajor: | 2.7276AU |
| Perihelion: | 2.0695AU |
| Aphelion: | 3.3856abbr=onNaNabbr=on |
| Period: | 4.50 yr (1645.3 d) |
| Inclination: | 10.588° |
| Eccentricity: | 0.24126 |
| Dimensions: | c/a = |
| Mean Diameter: | [1] |
| Mass: | |
| Density: | |
| Rotation: | 10.67abbr=onNaNabbr=on |
| Spectral Type: | C (Tholen) |
| Abs Magnitude: | 8.16, 7.980 |
| Albedo: | 0.052 (calculated) 0.0647 ± 0.0135 |
| Discovered: | 11 April 1878 |
| Epoch: | 31 July 2016 (JD 2457600.5) |
| Asc Node: | 21.707° |
| Arg Peri: | 196.93° |
| Mean Motion: | / day |
| Orbit Ref: | [2] |
| Observation Arc: | 113.41 yr (41424 d) |
| Uncertainty: | 0 |
| Moid: | 1.0648AU |
| Jupiter Moid: | 1.60306AU |
| Tisserand: | 3.289 |
187 Lamberta is a main-belt asteroid that was discovered by Corsican-born French astronomer Jérôme Eugène Coggia on April 11, 1878, and named after the astronomer Johann Heinrich Lambert. It was the second of Coggia's five asteroid discoveries.
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.