675 Ludmilla
675 Ludmilla is a minor planet orbiting the Sun. It was named after Mikhail Glinka's opera Ruslan and Lyudmila.
Mass and density
In 2012, a study by Benoît Carry estimated a mass of (1.20±0.24)×1019 kg for Ludmilla based on its gravitational influence on other Solar System bodies.[2] However, given Ludmilla's diameter of 67.7 km (42.1 mi), this mass implies an extremely high density 73.99±15.05 g/cm3. Such a high density is unphysical, so this mass and density estimate of Ludmilla has been rejected by Carry.[2] Because of Ludmilla's small size, its gravitational influence on other bodies is extremely difficult to detect and may lead to highly inaccurate mass and density estimates.[2] A more recent study in 2019 determined a mass of (6.47±3.14)×1017 kg for Ludmilla, which corresponds to a density of 3.99±1.94 g/cm3 for a diameter of 67.7 km (42.1 mi).[3]
References
- ^ a b "675 Ludmilla (1908 DU)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 7 May 2016.
- ^ 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.
- ^ a b Kretlow, Mike. "Size, Mass and Density of Asteroids (SiMDA) – Summary for: (675) Ludmilla". Size, Mass and Density of Asteroids (SiMDA). Retrieved 24 October 2023.
External links
- 675 Ludmilla at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
- 675 Ludmilla at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters
- v
- t
- e
- 674 Rachele
- 675 Ludmilla
- 676 Melitta
This article about an asteroid native to the asteroid belt is a stub. You can help Wikipedia by expanding it. |
- v
- t
- e