Astronomy:187 Lamberta
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| Discovery | |
|---|---|
| Discovered by | J. Coggia, 1878 |
| Discovery date | 11 April 1878 |
| Designations | |
| (187) Lamberta | |
| Pronunciation | /læmˈbɜːrtə/ |
| A878 GB; 1946 LB; 1948 XR | |
| Minor planet category | Main belt |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 113.41 yr (41424 d) |
| |{{{apsis}}}|helion}} | 3.3856 astronomical unit|AU (506.48 Gm) |
| |{{{apsis}}}|helion}} | 2.0695 AU (309.59 Gm) |
| 2.7276 AU (408.04 Gm) | |
| Eccentricity | 0.24126 |
| Orbital period | 4.50 yr (1645.3 d) |
| Mean anomaly | 217.42° |
| Mean motion | 0° 13m 7.68s / day |
| Inclination | 10.588° |
| Longitude of ascending node | 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 | |
| Mean diameter | 141±2 km[2] 147.294±1.389 km[1] 131.3±1.1 km[3] |
| Flattening | 0.14[lower-alpha 1] |
| Mass | (1.9±0.3)×1018 kg[2] (1.80±0.85)×1018 kg[3] |
| Mean density | 1.28±0.22 g/cm3[2] 1.51±0.71 g/cm3[3] |
| Rotation period | 10.67 h (0.445 d)[1] |
| Geometric albedo | 0.052 (calculated)[2] 0.044±0.007[1] 0.0647 ± 0.0135[4] |
| C[4] (Tholen) | |
| Absolute magnitude (H) | 8.40,[1] 7.980[4] |
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.[3]
Notes
References
- ↑ 1.0 1.1 1.2 1.3 1.4 "187 Lamberta". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=187;cad=1.
- ↑ 2.0 2.1 2.2 2.3 2.4 P. Vernazza et al. (2021) VLT/SPHERE imaging survey of the largest main-belt asteroids: Final results and synthesis. Astronomy & Astrophysics 54, A56
- ↑ 3.0 3.1 3.2 3.3 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73: pp. 98–118, doi:10.1016/j.pss.2012.03.009, Bibcode: 2012P&SS...73...98C. See Table 1.
- ↑ 4.0 4.1 4.2 Pravec, 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 (1667), Bibcode: 2012LPICo1667.6089P. See Table 4.
External links
- 187 Lamberta at AstDyS-2, Asteroids—Dynamic Site
- 187 Lamberta at the JPL Small-Body Database
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