Eupheme (moon)

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Eupheme
Provisional or systematic name S / 2003 J 3
Central body Jupiter
Properties of the orbit
Major semi-axis 20,224,000 km
Periapsis 16,242,000 km
Apoapsis 24,206,000 km
eccentricity 0.1969
Orbit inclination 147.541 °
Orbital time 583.88 d
Mean orbital velocity 2.49 km / s
Physical Properties
Albedo 0.04
Apparent brightness 23.4 mag
Medium diameter ≈ 2 km
Dimensions ≈ 1.1 * 10 13 kg
Medium density 2.6 g / cm 3
Acceleration of gravity on the surface ≈ 0 m / s 2
Escape speed ≈ 0 m / s
discovery
Explorer

University of Hawaii

Date of discovery February 5, 2003

Eupheme (also Jupiter LX ) is one of the smaller moons of the planet Jupiter .

discovery

Eupheme was discovered on February 5, 2003 by astronomers at the University of Hawaii and was given the provisional designation S / 2003 J 3. On August 23, 2019, it was named by the International Astronomical Union after Eupheme , a figure in Greek mythology .

Orbit data

Eupheme orbits Jupiter at an average distance of 20,224,000 km in 583.88 days. The track has an eccentricity of 0.1969. With an inclination of 147.5 ° from the local Laplace plane , the orbit is retrograde, i.e. that is, the moon moves around the planet against the direction of rotation of Jupiter.

Due to its orbital properties, Eupheme is assigned to the Ananke group , named after the Jupiter moon Ananke .

Physical data

Eupheme has a diameter of about 2 km. Their density is estimated at 2.6 g / cm³. It is probably made up mainly of silicate rock. It has a very dark surface with an albedo of 0.04, i.e. that is, only 4% of the incident sunlight is reflected. Their apparent brightness is 23.4 m .

Web links

Individual evidence

  1. ↑ The results are in! Jovian moon-naming contest winners announced. Carnegie Institution for Science, August 23, 2019; accessed August 28, 2019 .
before Jupiter moons after that
S / 2003 J 2 Eupheme (moon)
 S / 2003 J 4
Well-known moons of planets and dwarf planets


earth

moon

Mars

Deimos  • Phobos

Jupiter
( list )

Adrastea  • Aitne  • Amalthea  • Ananke  • Aoede  • Arche  • Autonoe  • Callirrhoe  • Carme  • Carpo  • Chaldene  • Cyllene  • Dia  • Eirene  • Elara  • Erinome  • Ersa  • Euanthe  • Eucelade  • Eupheme  • Euporia  • Europe  • Eurydome  • Ganymed  • Harpalyke  • Hegemone  • Helike  • Hermippe  • Herse  • Himalia  • Io  • Iocaste  • Isonoe  • Kale  • Kallichore  • Callisto  • Kalyke  • Kore  • Leda  • Lysithea  • Megaclite  • Metis  • Mneme  • Orthosie  • Pandia  • Pasiphae  • Pasithee  • Philophrosyne  • Praxidike  • Sinope  • Sponde  • Taygete  • Thebe  • Thelxinoe  • Themisto  • Thyone  • Valetudo
S / 2003 Y 10  • S / 2003 Y 12  • S / 2003 Y 16  • S / 2003 Y 18  • S / 2003 Y 19  • S / 2003 Y 2  • S / 2003 Y 23  • S / 2003 Y 4  • S / 2003 Y 9  • S / 2010 Y 1  • S / 2010 Y 2  • S / 2011 Y 1  • S / 2011 Y 2  • S / 2016 Y 1  • S / 2017 Y 1  • S / 2017 Y 2  • S / 2017 Y 3  • S / 2017 Y 5  • S / 2017 Y 6  • S / 2017 Y 7  • S / 2017 Y 8  • S / 2017 Y 9

Saturn
( list )

Aegaeon  • Aegir  • Albiorix  • Anthe  • Atlas  • bebhionn  • Bergelmir  • Bestla  • Calypso  • Daphnis  • Dione  • Enceladus  • Epimetheus  • erriapus  • Farbauti  • Fenrir  • Fornjot  • Greip  • Hati  • Helene  • Hyperion  • hyrrokkin  • Iapetus  • Ijiraq  • Janus  • Jarnsaxa  • Kari  • Kiviuq  • Loge  • Methone  • Mimas  • Mundilfari  • Narvi  • Paaliaq  • Pallene  • Pan  • Pandora  • Phoebe  • Polydeuces  • Prometheus  • Rhea  • Siarnaq  • Skathi  • Skoll  • Surtur  • Suttungr  • Tarqeq  • Tarvos  • Telesto  • Tethys  • Thrymr  • Titan  • Ymir
S / 2004 S 7  • S / 2004 S 12  • S / 2004 S 13  • S / 2004 S 17  • S / 2004 S 20  • S / 2004 S 21  • S / 2004 S 22  • S / 2004 S 23  • S / 2004 S 24  • S / 2004 S 25  • S / 2004 S 26  • S / 2004 S 27  • S / 2004 S 28  • S / 2004 S 29  • S / 2004 S 30  • S / 2004 S 31  • S / 2004 S 32  • S / 2004 S 33  • S / 2004 S 34  • S / 2004 S 35  • S / 2004 S 36  • S / 2004 S 37  • S / 2004 S 38  • S / 2004 S 39  • S / 2006 S 1  • S / 2006 S 3  • S / 2007 S 2  • S / 2007 S 3  • S / 2009 S 1

Uranus
( list )

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Neptune
( list )

Despina  • Galatea  • Halimede  • Hippocamp  • Laomedeia  • Larissa  • Naiad  • Nereid  • Neso  • Proteus  • Psamathe  • Sao  • Thalassa  • Triton

Pluto

Charon  • Hydra  • Kerberos  • Nix  • Styx

Haumea

Hi'iaka  • Namaka

Makemake

S / 2015 (136472) 1

Eris

Dysnomia