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Koronis (minor planet designation: 158 Koronis) is a main-belt asteroid that was discovered by Russian astronomer Viktor Knorre on January 4, 1876, from the Berlin observatory.[1] It was the first of his four asteroid discoveries. The meaning of the asteroid name is uncertain, but it may come from Coronis the mother of Asclepius from Greek mythology. Alternatively, it may come from Coronis, a nymph of the Hyades sisterhood.[7] The Koronis family is named after this asteroid.

158 Koronis
A three-dimensional model of 158 Koronis based on its light curve.
Discovery[1]
Discovered byViktor Knorre
Discovery date4 January 1876
Designations
MPC designation
(158) Koronis
Pronunciation/kɒˈroʊnɪs/[2]
Alternative designations
A876 AA; 1893 PA;
1911 HB; 1955 HA1
Minor planet category
Main belt
AdjectivesKoronidian /kɒrəˈnɪdiən/[3]
Orbital characteristics[4][5]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc122.53 yr (44755 d)
Aphelion3.0181 AU (451.50 Gm)
Perihelion2.71904 AU (406.763 Gm)
Semi-major axis
2.86858 AU (429.133 Gm)
Eccentricity0.052130
Orbital period (sidereal)
4.86 yr (1774.6 d)
Average orbital speed
17.80 km/s
Mean anomaly
15.346°
Mean motion
0° 12m 10.296s / day
Inclination1.0015°
Longitude of ascending node
277.96°
Argument of perihelion
142.37°
Earth MOID1.7299 AU (258.79 Gm)
Jupiter MOID2.16233 AU (323.480 Gm)
TJupiter3.297
Physical characteristics
Dimensions35.37±1.4 km
Synodic rotation period
14.218 h (0.5924 d)
Sidereal rotation period
14.218 h (0.592 d)
Geometric albedo
0.2766±0.024
Spectral type
S[6]
Absolute magnitude (H)
9.27

    From its spectrum this is classified as an S-type asteroid,[6] indicating a stony composition. Photometric observations show a synodic rotation period of 14.206 ± 0.002 hours with a brightness variation of 0.28–0.43 in magnitude.[8] A subsequent study at the Altimira Observatory during 2010 was in agreement with this estimate, yielding a rotation period of 14.208 ± 0.040 hours.[9] Based on a model constructed from the lightcurve, the shape of Koronis resembles that of 243 Ida, an asteroid in the same family, although it is a bit larger.

    A collision involving 158 Koronis 15 million years ago created a cluster of 246 objects. 158 Koronis itself retained 98.7% of the total mass. These new objects formed the Koronis(2) family. Koronis(2) is a subfamily of the much larger Koronis family.[10]


    References


    1. "Numbered Minor Planets 1–5000", Discovery Circumstances, IAU Minor Planet center, retrieved 7 April 2013.
    2. "coronis". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
    3. McClintock & Strong (1894) Cyclopaedia of Biblical, Theological, and Ecclesiastical Literature
    4. Yeomans, Donald K., "158 Koronis", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.
    5. "The Asteroid Orbital Elements Database". astorb. Lowell Observatory.
    6. DeMeo, Francesca E.; et al. (July 2009), "An extension of the Bus asteroid taxonomy into the near-infrared" (PDF), Icarus, 202 (1): 160–180, Bibcode:2009Icar..202..160D, doi:10.1016/j.icarus.2009.02.005, archived from the original (PDF) on March 17, 2014, retrieved 2013-04-08. See appendix A.
    7. Schmadel, Lutz D. (2012), Dictionary of Minor Planet Names (6th ed.), Springer, p. 27, ISBN 978-3642297182.
    8. Slivan, Stephen M.; et al. (April 2003), "Spin vectors in the Koronis family: comprehensive results from two independent analyses of 213 rotation lightcurves", Icarus, 162 (2): 285–307, Bibcode:2003Icar..162..285S, CiteSeerX 10.1.1.136.468, doi:10.1016/S0019-1035(03)00029-0.
    9. Buchheim, Robert K. (July 2011), "Phase Curves of 158 Koronis and 535 Montague", The Minor Planet Bulletin, 38 (3): 128–130, Bibcode:2011MPBu...38..128B.
    10. Molnar, Lawrence A.; Haegert, M. J. (September 2009), "Details of Recent Collisions of Asteroids 832 Karin and 158 Koronis", American Astronomical Society, DPS meeting #41, #27.05, vol. 41, p. 27.05, Bibcode:2009DPS....41.2705M.



    На других языках

    [de] (158) Koronis

    (158) Koronis ist ein Asteroid des Hauptgürtels, der am 4. Januar 1876 von dem russischen Astronomen Viktor Knorre entdeckt wurde.
    - [en] 158 Koronis

    [es] (158) Koronis

    (158) Koronis es un asteroide que forma parte del cinturón de asteroides y fue descubierto el 4 de enero de 1876 por Víktor Karlovich Knorre desde el observatorio de Berlín, Alemania. Está nombrado por Coronis, amante de Apolo en la mitología griega.[2]

    [fr] (158) Coronis

    (158) Coronis (désignation internationale (158) Koronis) est un astéroïde de la ceinture principale découvert par Viktor Knorre le 4 janvier 1876, à l'observatoire de Berlin. Son nom se réfère à Coronis fille de Phlégias dans la mythologie grecque.

    [ru] (158) Коронида

    (158) Коронида (др.-греч. Κορωνίς) — довольно яркий каменистый астероид главного пояса, принадлежащий к светлому спектральному классу S. Он был обнаружен русским астрономом Виктором Кнорре 4 января 1876 года в Берлинской обсерватории и назван в честь Корониды, нимфы в древнегреческой мифологии или другого персонажа этой мифологии, носящего это имя[1]. Это был первый из четырёх открытых им астероидов.


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