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Orthosie (moon)

Orthosie (moon)

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Orthosie (/ɔːrˈθɒs(i)i/ or-THOSS-(ee-)ee; Greek: Ορθωσία), also known as Jupiter XXXV, is a natural satellite of Jupiter. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2001, and given the temporary designation S/2001 J 9.[1][2]

Discovered by Scott S. Sheppard
Discovery date 2001
Orbital characteristics
Mean orbit radius
21,075,662 km
Eccentricity 0.337[3]
625.07 days[3]
Inclination 146.46[4]
Physical characteristics
Mean radius
~1 km

Orthosie is about 2 kilometres in diameter, and orbits Jupiter at an average distance of 21,075,662 km in 625.07 days, at an inclination of 146.46° to the ecliptic (143° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.3376.[3]

It was named in August 2003 after Orthosie, the Greek goddess of prosperity and one of the Horae.[5] The Horae (Hours) were daughters of Zeus and Themis.

Orthosie belongs to the Ananke group.


  1. ^ Daniel W. E. Green (May 16, 2002). "IAUC 7900: Satellites of Jupiter". International Astronomical Union. 
  2. ^ Brian G. Marsden (May 15, 2003). "MPEC 2002-J54: Eleven New Satellites of Jupiter". International Astronomical Union Minor Planet Center. 
  3. ^ a b c "Ephemeris of Orthosie, Epoch 2017 Feb. 16.0 TT = JDT 2457800.5". MPC. Retrieved August 13, 2018. 
  4. ^ Sheppard, Scott S. "Jupiter's Moons". carnegiescience.edu. sites.google.com. Retrieved 18 July 2018. 
  5. ^ Daniel W. E. Green (August 8, 2003). "IAUC 8177: Satellites of Jupiter, Saturn, Uranus". International Astronomical Union. 

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