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Contents

   



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1 Orbit  





2 Characteristics  





3 References  





4 External links  














Praxidike (moon)






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From Wikipedia, the free encyclopedia
 


Praxidike
Praxidike imaged by the Canada-France-Hawaii Telescope in December 2001
Discovery[1]
Discovered byScott S. Sheppard et al.
Discovery siteMauna Kea Obs.
Discovery date23 November 2000
Designations

Designation

Jupiter XXVII
Pronunciation/prækˈsɪdək/[2]

Named after

Πραξιδίκη Praxidikē

Alternative names

S/2000 J 7
AdjectivesPraxidikean /ˌpræksədəˈkən/[3]
Orbital characteristics[4]

Semi-major axis

21147000 km
Eccentricity0.230

Orbital period (sidereal)

−609.25 days[5]

Mean anomaly

21.8°
Inclination149.0°

Longitude of ascending node

285.2°

Argument of perihelion

209.7°
Satellite ofJupiter
GroupAnanke group
Physical characteristics

Mean diameter

7.0±0.7 km[6]
Albedo0.029±0.006[6]

Apparent magnitude

21.2

Praxidike /prækˈsɪdək/, also known as Jupiter XXVII, is a retrograde irregular satelliteofJupiter. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2000,[7][1] and given the temporary designation S/2000 J 7.

It was named in August 2003 after Praxidike,[8] the Greek goddessofpunishment.

Orbit[edit]

Praxidike observed by the WISE spacecraft in 2010

Praxidike orbits Jupiter at an average distance of 20,824,000 km in 609.25 days, at an inclination of 144° to the ecliptic (143° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.1840.

Praxidike belongs to the Ananke group, believed to be the remnants of a break-up of a captured heliocentric asteroid.[9][10] With an estimated diameter of 7 km, Praxidike is the second largest member of the group after Ananke itself (assumed albedo of 0.04).[11]

Characteristics[edit]

The satellite appears grey (colour indices B-V=0.77, R-V= 0.34), typical of C-type asteroids.[12]

References[edit]

  • ^ as 'Praxidice' in Noah Webster (1884) A Practical Dictionary of the English Language
  • ^ There is also 'Praxidician' /præksəˈdɪʃiən/, as in the 'Praxidician goddesses' that include Praxidice, but this does not derive from the name Praxidice itself.
  • ^ S.S. Sheppard (2019), Moons of Jupiter, Carnegie Science, on line
  • ^ "M.P.C. 104798" (PDF). Minor Planet Circular. Minor Planet Center. 10 May 2017.
  • ^ a b Grav, T.; Bauer, J. M.; Mainzer, A. K.; Masiero, J. R.; Nugent, C. R.; Cutri, R. M.; et al. (August 2015). "NEOWISE: Observations of the Irregular Satellites of Jupiter and Saturn" (PDF). The Astrophysical Journal. 809 (1): 9. Bibcode:2015ApJ...809....3G. doi:10.1088/0004-637X/809/1/3. S2CID 5834661. 3.
  • ^ IAUC 7555: Satellites of Jupiter January 5, 2001 (discovery)
  • ^ IAUC 7998: Satellites of Jupiter 2002 October 22 (naming the moon)
  • ^ Sheppard, S. S., Jewitt, D. C.; An Abundant Population of Small Irregular Satellites Around Jupiter Archived 2003-08-05 at the Wayback Machine, Nature, Vol. 423 (May 2003), pp. 261-263
  • ^ Nesvorný, D.; Alvarellos, J. L. A.; Dones, L.; and Levison, H. F.; Orbital and Collisional Evolution of the Irregular Satellites, The Astronomical Journal, Vol. 126 (2003), pp. 398–429
  • ^ Sheppard, S. S.; Jewitt, D. C.; Porco, C.; Jupiter's Outer Satellites and Trojans Archived 2009-09-20 at the Wayback Machine, in Jupiter: The Planet, Satellites and Magnetosphere, edited by Fran Bagenal, Timothy E. Dowling, and William B. McKinnon, Cambridge Planetary Science, Vol. 1, Cambridge, UK: Cambridge University Press, ISBN 0-521-81808-7, 2004, pp. 263-280
  • ^ Grav, T.; Holman, M. J.; Gladman, B. J.; Aksnes, K.; Photometric Survey of the Irregular Satellites, Icarus, Vol. 166 (2003), pp. 33-45
  • External links[edit]


    Retrieved from "https://en.wikipedia.org/w/index.php?title=Praxidike_(moon)&oldid=1195677215"

    Categories: 
    Ananke group
    Moons of Jupiter
    Irregular satellites
    Discoveries by Scott S. Sheppard
    Astronomical objects discovered in 2000
    Moons with a retrograde orbit
    Hidden categories: 
    Webarchive template wayback links
    Articles with short description
    Short description matches Wikidata
     



    This page was last edited on 14 January 2024, at 21:17 (UTC).

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