(187) Lamberta

187 Lamberta
Lamberta VLT.png
Discovery
Discovered byJ. Coggia, 1878
Discovery date11 April 1878
Designations
(187) Lamberta
Pronunciation/læmˈbɜːrtə/
Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc113.41 yr (41424 d)
Aphelion3.3856 AU (506.48 Gm)
Perihelion2.0695 AU (309.59 Gm)
2.7276 AU (408.04 Gm)
Eccentricity0.24126
4.50 yr (1645.3 d)
217.42°
0° 13m 7.68s / day
Inclination10.588°
21.707°
196.93°
Earth MOID1.0648 AU (159.29 Gm)
Jupiter MOID1.60306 AU (239.814 Gm)
TJupiter3.289
Physical characteristics
Dimensionsc/a = 0.86±0.07[2]
Mean diameter
141±2 km[2]
130.4±2.7 km[1]
131.3±1.1 km[3]
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]
10.670 h (0.4446 d)
0.052 (calculated)[2]
0.0566±0.002[1]
0.0647 ± 0.0135[4]
C[4] (Tholen)
8.16,[1] 7.980[4]

Lamberta (minor planet designation: 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]

References[]

  1. ^ a b c d "187 Lamberta". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
  2. ^ a b c d e P. Vernazza et al. (2021) VLT/SPHERE imaging survey of the largest main-belt asteroids: Final results and synthesis. Astronomy & Astrophysics 54, A56
  3. ^ a b c d Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, vol. 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
  4. ^ a b c 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, no. 1667, Bibcode:2012LPICo1667.6089P. See Table 4.

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