Encyclopedia of the Solar System 2nd ed

TABLE

4

Physical and Orbital Properties of the Satellites of the Planets and Dwarf Planets (

Continued

)

Semimajor

Orbital

Orbital Inclination Orbital Period

Mean Radius

Density

Year of

Discovered

Name

Axis 10

3

km

Eccentricity

degrees

days

Km

Mass (10

23

g)

g cm

−^3

Discovery

By

S1 Mimas

185.54

0.0196

1.57

0.942

198.8

0.37

1.1

1789

Herschel

S2 Enceladus

238.04

0.0047

0.01

1.370

252.3

0.73

1.1

1789

Herschel

S3 Tethys

294.67

0.0001

1.09

1.888

536.3

6.3

1.0

1684

Cassini

S14 Calypso

294.71

0.0005

1.50

1.888

15

×

8

×

8

—

—

1980

Pascu

S13 Telesto

294.71

0.0002

1.18

1.888

15

×

12

×

8

—

—

1980

Reitsema

S4 Dione

377.42

0.0022

0.03

2.737

562.5

11.0

1.5

1684

Cassini

S12 Helene

377.42

0.0071

0.21

2.737

16.

—

—

1980

Lecacheux

S5 Rhea

527.07

0.0010

0.33

4.518

764.5

23.1

1.2

1672

Cassini

S6 Titan

1,221.87

0.0288

0.28

15.95

2,575.5

1346.

1.88

1655

Huygens

S7 Hyperion

1,500.88

0.0274

0.63

21.28

180

×

140

×

112

15.9

1.0

1848

Bond

S8 Iapetus

3,560.84

0.0283

7.49

79.33

734.5

18.8

1.21

1671

Cassini

S9 Phoebe

12,947.80

0.1635

175.99

550.31

106.6

0.1

—

1898

Pickering

S19 Ymir

23,040.

0.3350

173.12

1315.21

9.

—

—

2000

Gladman

S20 Paaliaq

15,200.

0.3631

45.08

686.93

11.

—

—

2000

Gladman

S21 Tarvos

17,983.

0.5305

33.82

926.23

7.5

—

—

2000

Kavelaars and Gladman

S22 Ijiraq

11,124.

0.3163

46.44

451.43

6

—

—

2000

Kavelaars and Gladman

S23 Suttungr

19,459.

0.1140

175.82

1016.67

3.5

—

—

2000

Gladman and Kavelaars

S24 Kiviuq

11,111.

0.3288

45.70

449.22

8

—

—

2000

Gladman

S25 Mundilfari

18,685.

0.2100

167.32

952.67

3.5

—

—

2000

Gladman and Kavelaars

S26 Albiorix

16,182.

0.4770

34.21

783.46

16.

—

—

2000

Holman and Spahr

S27 Skathi

15,541.

0.2701

152.64

728.21

4.

—

—

2000

Kavelaars and Gladman

S28 Erriapo

17,343.

0.4724

34.69

871.18

5.

—

—

2000

Kavelaars and Gladman

S29 Siarnaq

17,531.

0.2961

46.00

895.55

20.

—

—

2000

Gladman and Kavelaars

S30 Thrymr

20,474.

0.4652

175.97

1094.23

3.5

—

—

2000

Gladman and Kavelaars

S31 Narvi

19,007.

0.4309

145.82

1003.93

3.5

—

—

2003

Sheppard

S32 Methone

194.44

0.0001

0.01

1.01

—

—

—

2004

Cassini

S33 Pallene

212.80

0.0040

0.18

1.15

—

—

—

2004

Cassini

S34 Polydeuces

377. 20

0.0192

0.17

2.74

—

—

—

2004

Cassini

S35 Daphnis

136.50

0.0000

0.00

0.594

—

—

—

2005

Cassini

S/2004 S7

20,999.

0.5299

166.18

1140.28

3.

—

—

2005

Jewitt et al.

S/2004 S8

25,108.

0.2064

170.42

1490.87

3.

—

—

2005

Jewitt et al.

S/2004 S9

20,390.

0.2397

156.38

1086.10

2.5

—

—

2005

Jewitt et al.

S/2004 S10

20,753.

0.2520

166.69

1116.47

3.

—

—

2005

Jewitt et al.

S/2004 S11

17,119.

0.4691

35.01

834.84

3.

—

—

2005

Jewitt et al.

S/2004 S12

19,878.

0.3261

165.28

1046.16

2.5

—

—

2005

Jewitt et al.

S/2004 S13

18,403.

0.2586

168.79

933.45

3.

—

—

2005

Jewitt et al.

S/2004 S14

19,856.

0.3715

165.83

1038.67

3.

—

—

2005

Jewitt et al.

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