58 Concordia

Main-belt asteroid

58 Concordia
Orbital diagram
Discovery
Discovered byKarl Theodor Robert Luther
Discovery dateMarch 24, 1860
Designations
(58) Concordia
Pronunciation/kənˈkɔːrdiə/[1]
Named after
Concordia
Main belt Nemesis
AdjectivesConcordian
Orbital characteristics
Epoch December 31, 2006 (JD 2454100.5)
Aphelion2.818 AU (421.526 million km)
Perihelion2.583 AU (386.457 million km)
2.701 AU (403.991 million km)
Eccentricity0.043
4.44 a (1620.946 d)
15.122°
Inclination5.057°
161.290°
34.465°
Physical characteristics
Dimensions93.4 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

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 Nemesis family of asteroids.

Concordia was discovered by German astronomer Robert Luther on March 24, 1860. At Luther's request, it was named by Karl Christian Bruhns of the University of Leipzig after Concordia, the Roman goddess of harmony.[7]

References

  1. ^ "Concordia". Dictionary.com Unabridged (Online). n.d.
  2. ^ 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.
  3. ^ 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.
  4. ^ "Asteroid Data Sets". Archived from the original on 17 December 2009.
  5. ^ 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.
  6. ^ 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.
  7. ^ Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names. Springer Science & Business Media. p. 20. ISBN 978-3-540-00238-3.
  • 58 Concordia at AstDyS-2, Asteroids—Dynamic Site
    • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
  • 58 Concordia at the JPL Small-Body Database
    • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters


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