Praxidike (satellite)

Praxidics
Praxidics
	Jupiter's satellite
Discovery story
Discoverer	, and
opening date	November 23, 2000
Orbital characteristics
Eccentricity	0.230 °
Circulation period	625.3 days
Orbital inclination	144 °; (to the ecliptic ); 143 °; (to the equator of Jupiter)
physical characteristics
Diameter	7 km
Weight	4.3⋅10 14 kg
Density	2.6 g / cm³
Albedo	0.04
Atmosphere	missing

Praxidike (from other Greek: Πραξιδίκη ) is an irregular satellite of Jupiter, also known as Jupiter XXVII .

Content

Opening

It was discovered on November 23, 2000 by a group of astronomers from the University of Hawaii under the leadership of Scott Sheppard and received the provisional designation S / 2000 J 7 ^[1] ^[2] . In August 2003, the satellite got its name in honor of the Greek goddess of retaliation Praxidica ^[3] .

Orbit

Praxidike makes a complete revolution around Jupiter at an average distance of 21,147,000 km in 625 days and 7 hours. The orbit has an eccentricity of 0.230. The inclination of the retrograde orbit to the local Laplace plane is 149.0 °. Belongs to the Ananke group ^[4] ^[5] .

Physical Characteristics

The diameter of Praxidike is about 7 km. Density is estimated at 2.6 g / cm³. The satellite is supposedly composed mainly of silicate rocks. A very dark surface has an albedo of 0.04. The magnitude is 21.2 ^m .

Notes

↑ IAUC 7555: Satellites of Jupiter (neopr.) . Archived on September 16, 2002. January 5, 2001 (Opening)
↑ MPEC 2001-A29: S / 2000 J 7, S / 2000 J 8, S / 2000 J 9, S / 2000 J 10, S / 2000 J 11 January 15, 2001 (Discovery and ephemeris)
↑ IAUC 7998: Satellites of Jupiter (unopened) (inaccessible link - history ) . October 22, 2002 (Naming a Satellite)
↑ Sheppard, SS, Jewitt, DC ; An Abundant Population of Small Irregular Satellites Around Jupiter , Nature, Vol. 423 (May 2003), pp. 261-263
↑ Nesvorný, D .; Alvarellos, JLA ; Dones, L .; and Levison, HF ; Orbital and Collisional Evolution of the Irregular Satellites , The Astronomical Journal, Vol. 126 (2003), pp. 398-429

[1] IAUC 7555: Satellites of Jupiter (neopr.) . Archived on September 16, 2002. January 5, 2001 (Opening)

[2] MPEC 2001-A29: S / 2000 J 7, S / 2000 J 8, S / 2000 J 9, S / 2000 J 10, S / 2000 J 11 January 15, 2001 (Discovery and ephemeris)

[3] IAUC 7998: Satellites of Jupiter (unopened) (inaccessible link - history ) . October 22, 2002 (Naming a Satellite)

[SheppardJewitt2003-4] Sheppard, SS, Jewitt, DC ; An Abundant Population of Small Irregular Satellites Around Jupiter , Nature, Vol. 423 (May 2003), pp. 261-263

[Nesvorny2003-5] Nesvorný, D .; Alvarellos, JLA ; Dones, L .; and Levison, HF ; Orbital and Collisional Evolution of the Irregular Satellites , The Astronomical Journal, Vol. 126 (2003), pp. 398-429