187 Lamberta
| Discovery | |
|---|---|
| Discovered by | J. Coggia, 1878 |
| Discovery date | 11 April 1878 |
| Designations | |
| (187) Lamberta | |
| Pronunciation | /læmˈbɜːrtə/ |
| A878 GB; 1946 LB; 1948 XR | |
| Main belt | |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 113.41 yr (41424 d) |
| Aphelion | 3.3856 AU (506.48 Gm) |
| Perihelion | 2.0695 AU (309.59 Gm) |
| 2.7276 AU (408.04 Gm) | |
| Eccentricity | 0.24126 |
| 4.50 yr (1645.3 d) | |
| 217.42° | |
| 0° 13m 7.68s / day | |
| Inclination | 10.588° |
| 21.707° | |
| 196.93° | |
| Earth MOID | 1.07102 AU (160.222 Gm) |
| Jupiter MOID | 1.60105 AU (239.514 Gm) |
| TJupiter | 3.289 |
| Physical characteristics | |
| 141±2 km 147.294±1.389 km 131.3±1.1 km | |
| Flattening | 0.14 |
| Mass | (1.9±0.3)×1018 kg (1.80±0.85)×1018 kg |
Mean density | 1.28±0.22 g/cm3 1.51±0.71 g/cm3 |
| 10.67 h (0.445 d) | |
| 0.052 (calculated) 0.044±0.007 0.0647 ± 0.0135 | |
| C (Tholen) | |
| 8.40, 7.980 | |
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.