58 Concordia is a fairly large main-belt asteroid that is orbiting the Sun with a period of 4.44 years, a semimajor axis of 2.7 AU, and a low eccentricity of 0.043. It is classified as a C-type asteroid, meaning that its surface is very dark and it is likely carbonaceous in composition. The surface spectra displays indications of hydrated minerals created through aqueous alteration.[5] The object is rotating with a sidereal period of 9.894541 h and pole orientations of (15.3°±0.7°, −4.2°±2.6°) and (195.9°±1.0°, 4.8°±1.2°).[6] It belongs to the Hungaria family of asteroids and has a satellite with an orbital period of 14.29 h.[3][dubious – discuss]
 Orbital diagram | |
| Discovery | |
|---|---|
| Discovered by | Karl Theodor Robert Luther |
| Discovery date | March 24, 1860 |
| Designations | |
| (58) Concordia | |
| Pronunciation | /kənˈkɔːrdiə/[1] |
Named after | Concordia |
| Main belt Nemesis | |
| Adjectives | Concordian |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 2.818 AU (421.526 Gm) |
| Perihelion | 2.583 AU (386.457 Gm) |
| 2.701 AU (403.991 Gm) | |
| Eccentricity | 0.043 |
| 4.44 a (1620.946 d) | |
| 15.122° | |
| Inclination | 5.057° |
| 161.290° | |
| 34.465° | |
| Physical characteristics | |
| Dimensions | 93.4 km |
| Mass | ~5.89×1017 kg (calculated) |
Mean density | 1.38 g/cm3 (assumed)[2] |
| 9.895±0.001 h[3] | |
| 0.058[4] | |
| C | |
| 8.86 | |
Concordia was discovered by German astronomer Robert Luther on March 24, 1860. At Luther's request, it was named by Carl Christian Bruhns of the University of Leipzig after Concordia, the Roman goddess of harmony.[7]
References
edit- ^ "Concordia". Dictionary.com Unabridged (Online). n.d.
- ^ Krasinsky, G. A.; Pitjeva, E. V.; Vasilyev, M. V.; Yagudina, E. I. (1 July 2002). "Hidden Mass in the Asteroid Belt". Icarus. 158 (1): 98–105. Bibcode:2002Icar..158...98K. doi:10.1006/icar.2002.6837 – via NASA ADS.
- ^ a b Pilcher, Frederick (October 2016), "Rotation Determinations for 50 Virginia, 58 Concordia 307 Nike, and 339 Dorothea", The Minor Planet Bulletin, 43 (4): 304–306, Bibcode:2016MPBu...43..304P.
- ^ "Asteroid Data Sets". Archived from the original on 17 December 2009.
- ^ Fornasier, S.; et al. (May 2014), "Aqueous alteration on main belt primitive asteroids: Results from visible spectroscopy", Icarus, 233: 163–178, arXiv:1402.0175, Bibcode:2014Icar..233..163F, doi:10.1016/j.icarus.2014.01.040.
- ^ Jiang, P. F.; Wang, X. B. (September 2018), "Photometric Study on Asteroid (58) Concordia", Acta Astronomica Sinica, 59 (5): 46, Bibcode:2018AcASn..59...46J, 46.
- ^ Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names. Springer Science & Business Media. p. 20. ISBN 978-3-540-00238-3.
External links
edit- 58 Concordia at AstDyS-2, Asteroids—Dynamic Site
- 58 Concordia at the JPL Small-Body Database
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