187 Lamberta

187 Lamberta
Discovery
Discovered by	J. Coggia, 1878
Discovery date	11 April 1878
Designations
MPC designation	(187) Lamberta
Pronunciation	/læmˈbɜːrtə/
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)
Aphelion	3.3856 AU (506.48 Gm)
Perihelion	2.0695 AU (309.59 Gm)
Semi-major axis	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°
Argument of perihelion	196.93°
Earth MOID	1.0648 AU (159.29 Gm)
Jupiter MOID	1.60306 AU (239.814 Gm)
TJupiter	3.289
Physical characteristics
Dimensions	130.40±2.7 km[1]; 131.31 ± 1.08 km[2]
Mass	(1.80 ± 0.85) × 1018 kg[2]
Mean density	1.51 ± 0.71 g/cm3[2]
Rotation period	10.670 h (0.4446 d)
Geometric albedo	0.0566±0.002[1]; 0.0647 ± 0.0135[3]
Spectral type	C[3] (Tholen)
Absolute magnitude (H)	8.16,[1] 7.980[3]

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.[2]

References

"187 Lamberta". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
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
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
187 Lamberta at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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[jpldata-1] "187 Lamberta". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.

[Carry2012-2] Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.

[Pravec2012-3] 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.