158 Koronis
{{Short description|Main-belt asteroid}}
{{Use dmy dates|date=September 2018}}
{{Infobox planet
| minorplanet=yes
| background=#D6D6D6
| name=158 Koronis
| image= 158Koronis (Lightcurve Inversion).png
| image_scale =
| caption=A three-dimensional model of 158 Koronis based on its light curve.
| discoverer=Viktor Knorre
| discovered=4 January 1876
| mpc_name=(158) Koronis
| pronounced={{IPAc-en|k|ɒ|ˈ|r|oʊ|n|ᵻ|s}}{{OED|coronis}}
| adjective=Koronidian {{IPAc-en|k|ɒr|ə|ˈ|n|ɪ|d|i|ə|n}}McClintock & Strong (1894) Cyclopaedia of Biblical, Theological, and Ecclesiastical Literature
| alt_names=A876 AA; 1893 PA;
1911 HB; 1955 HA1
| mp_category=Main belt
| orbit_ref={{Cite web |url=http://ftp.lowell.edu/pub/elgb/astorb.html |website=astorb |title=The Asteroid Orbital Elements Database |publisher=Lowell Observatory }}
| epoch=31 July 2016 (JD 2457600.5)
| semimajor={{Convert|2.86858|AU|Gm|abbr=on}}
| perihelion={{Convert|2.71904|AU|Gm|abbr=on}}
| aphelion={{Convert|3.0181|AU|Gm|abbr=on|lk=on}}
| eccentricity=0.052130
| inclination=1.0015°
| asc_node=277.96°
| arg_perihelion=
| mean_anomaly=15.346°
| avg_speed=17.80 km/s
| dimensions={{val|35.37|1.4|ul=km}}
| mass=
| density=
| surface_grav=
| escape_velocity=
| sidereal_day=14.218 h (0.592 d)
| axial_tilt=
| pole_ecliptic_lat=
| pole_ecliptic_lon=
| spectral_type=S
| abs_magnitude=9.27
| albedo={{val|0.2766|0.024}}
| single_temperature=
| arg_peri=142.37°
| mean_motion={{Deg2DMS|0.20286|sup=ms}} / day
| observation_arc=122.53 yr (44755 d)
| uncertainty=0
| rotation={{Convert|14.218|h|d|abbr=on|lk=on}}
| moid={{Convert|1.7299|AU|Gm|abbr=on}}
| jupiter_moid={{Convert|2.16233|AU|Gm|abbr=on}}
| tisserand=3.297
}}
158 Koronis is a main-belt asteroid that was discovered by Russian astronomer Viktor Knorre on January 4, 1876, from the Berlin observatory. 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. The Koronis family is named after this asteroid.
From its spectrum this is classified as an S-type asteroid, 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. 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. 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. [https://web.archive.org/web/20030419143817/http://www.astro.helsinki.fi/~kaselain/asteroids.html]
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.
References
{{Reflist|refs=
| title = Numbered Minor Planets 1–5000
| work = Discovery Circumstances
| publisher = IAU Minor Planet center
| url = https://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html
| access-date= 2013-04-07
| postscript= .}}
| first1 = Donald K.
| last1 = Yeomans
| title = 158 Koronis
| work = JPL Small-Body Database Browser
| publisher = NASA Jet Propulsion Laboratory
| url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=158
| access-date= 12 May 2016
| postscript= .}}
| first1 = Lutz D.
| last1 = Schmadel
| title = Dictionary of Minor Planet Names
| publisher = Springer
| page = 27
| edition = 6th
| year = 2012
| isbn = 978-3642297182
| url = https://books.google.com/books?id=aeAg1X7afOoC&pg=PA27
| postscript= .}}
| last1 = Slivan
| first1 = Stephen M.
| last2 = Binzel
| first2 = Richard P.
| last3 = Crespo da Silva
| first3 = Lucy D.
| last4 = Kaasalainen
| first4 = Mikko
| last5 = Lyndaker
| first5 = Mariah M.
| last6 = Krčo
| first6 = Marko
| display-authors = 1
| title = Spin vectors in the Koronis family: comprehensive results from two independent analyses of 213 rotation lightcurves
| journal = Icarus
| volume = 162
| issue = 2
| pages = 285–307
|date=April 2003
| doi = 10.1016/S0019-1035(03)00029-0
| bibcode = 2003Icar..162..285S
| postscript= .| citeseerx = 10.1.1.136.468
}}
| last1 = Buchheim
| first1 = Robert K.
| title = Phase Curves of 158 Koronis and 535 Montague
| journal = The Minor Planet Bulletin
| volume = 38
| issue = 3
| pages = 128–130
|date=July 2011
| bibcode = 2011MPBu...38..128B
| postscript= .}}
|last1=DeMeo
|first1=Francesca E.
|last2=Binzel
|first2=Richard P.
|last3=Slivan
|first3=Stephen M.
|last4=Bus
|first4=Schelte J.
|display-authors=1
|title=An extension of the Bus asteroid taxonomy into the near-infrared
|journal=Icarus
|volume=202
|issue=1
|pages=160–180
|date=July 2009
|doi=10.1016/j.icarus.2009.02.005
|bibcode=2009Icar..202..160D
|url=http://www.tara.tcd.ie/bitstream/2262/43276/1/PEER_stage2_10.1016%252Fj.icarus.2009.02.005.pdf
|access-date=2013-04-08
|postscript=.
|url-status=dead
|archive-url=https://web.archive.org/web/20140317200310/https://www.tara.tcd.ie/bitstream/2262/43276/1/PEER_stage2_10.1016/j.icarus.2009.02.005.pdf
|archive-date=March 17, 2014
|df=mdy }} See appendix A.
| last1 = Molnar
| first1 = Lawrence A.
| last2 = Haegert
| first2 = M. J.
| title = Details of Recent Collisions of Asteroids 832 Karin and 158 Koronis
| pages = 27.05
| work = American Astronomical Society, DPS meeting #41, #27.05
| date = September 2009
| volume = 41
| bibcode = 2009DPS....41.2705M
| postscript= .}}
}}
External links
- {{AstDys|158}}
- {{JPL small body}}
{{Minor planets navigator |157 Dejanira |number=158 |159 Aemilia}}
{{Small Solar System bodies}}
{{Authority control}}
{{DEFAULTSORT:Koronis}}