Celestial     calendar

Satellites of Uranus

(Orbital, physical and photometric data)


Name

Orbital Period
(R=Retrograde1)

Semimajor Axis2

Mass

Radius

Magnitude3

d

´103 km

1/Planet

km

m

I  Ariel

2.52

191

1.55´10-5

581´578´578

+13.7

II Umbriel

4.14

266

1.35´10-5

585

+14.5

III Titania

8.71

436

4.06´10-5

789

+13.5

IV Oberon

13.46

583

3.47´10-5

762

+13.7

V Miranda

1.41

129

0.08´10-5

240´234´233

+15.8

IX Cressida

0.46

62

 

33:

+22.3

X Desdemona

0.47

63

 

30:

+22.5

XI Juliet

0.49

64

 

43:

+21.7

XII Portia

0.51

66

 

55:

+21.1

XIII Rosalind

0.56

70

 

30:

+22.5

XIV Belinda

0.62

75

 

34:

+22.1

XV Puck

0.76

86

 

78:

+20.4

XVI Caliban

579.7   R

7 231

 

30:

+22.4

XVII Sycorax

1 288.3   R

12 179

 

60:

+20.8

 

Main Astronomical Observatory

  

1 Retrograde motion: for orbital motion in the solar system, motion that is clockwise in the orbit as seen from the north pole of the ecliptic.

2 Half the length of the major axis of the ellipse; a standard element used to describe an elliptical orbit.

3 This is the mean opposition magnitude of the satellite.