Praxidike , also known as , is a Jupiter XXVII retrograde irregular satellite of Jupiter. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2000,  and given the  temporary designation .
S/2000 J 7
It was named in August 2003 after
Praxidice, the  Greek goddess of punishment.
orbits Jupiter at an average distance of 20,824,000 km in 613.904 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.  With an estimated diameter of 7 km, Praxidike is the second largest member of the group after Ananke itself (assumed albedo of 0.04). 
The satellite appears grey (
colour indices B-V=0.77, R-V= 0.34), typical of C-type asteroids.
^ as 'Praxidice' in Noah Webster (1884)
A Practical Dictionary of the English Language
^ There is also 'Praxidician' , 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
^ 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". The Astrophysical Journal. 809 (1): 9. Bibcode: 2015ApJ...809....3G. doi: 10.1088/0004-637X/809/1/3. 3.
IAUC 7555: January 5, 2001 (discovery) Satellites of Jupiter
MPEC 2001-A29: January 15, 2001 (discovery and ephemeris) S/2000 J 7, S/2000 J 8, S/2000 J 9, S/2000 J 10, S/2000 J 11
IAUC 7998: 2002 October 22 (naming the moon) Satellites of Jupiter
^ 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.; , The Astronomical Journal, Vol. 126 (2003), pp. 398–429 Orbital and Collisional Evolution of the Irregular Satellites
^ Sheppard, S. S.; Jewitt, D. C.;
Jupiter's Outer Satellites and Trojans Archived 2011-07-14 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.; , Icarus, Vol. 166 (2003), pp. 33-45 Photometric Survey of the Irregular Satellites
IAU-MPC NSES Mean orbital parameters NASA JPL