158 Koronis

158 Koronis
A three-dimensional model of 158 Koronis based on its light curve.
Discovery[1]
Discovered byViktor Knorre
Discovery date4 January 1876
Designations
(158) Koronis
Pronunciation/kɒˈroʊnɪs/[2]
A876 AA; 1893 PA;
1911 HB; 1955 HA1
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)
2.86858 AU (429.133 Gm)
Eccentricity0.052130
4.86 yr (1774.6 d)
17.80 km/s
15.346°
0° 12m 10.296s / day
Inclination1.0015°
277.96°
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
14.218 h (0.5924 d)
14.218 h (0.592 d)
0.2766±0.024
S[6]
9.27

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.

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. [1]

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]

  1. ^ a b Cite error: The named reference IAU_MPC was invoked but never defined (see the help page).
  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. ^ Cite error: The named reference JPL was invoked but never defined (see the help page).
  5. ^ "The Asteroid Orbital Elements Database". astorb. Lowell Observatory.
  6. ^ a b Cite error: The named reference DeMeo2009 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Schmadel2012 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Slivan2003 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Buchheim2011 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference MolnarHaegert2009 was invoked but never defined (see the help page).