Table : APPENDIX C THE PLANETS: ORBITAL DATA

Planet

Semimajor axis

Sidereal period

Synodic period (day)

Mean orbital speed (km/s)

Orbital eccentricity

Inclination of orbit to ecliptic (°)

(AU)

(106 km)

(year)

(day)

Mercury

  0.3871

    57.9

        0.2408

              87.97

  115.88

47.9

0.206

7.00

Venus

  0.7233

  108.2

        0.6152

           224.70

  583.92

35.0

0.007

3.39

Earth

  1.0000

  149.6

        1.0000

           365.26

—

29.8

0.017

0.00

Mars

  1.5237

  227.9

        1.8808

           686.98

  779.94

24.1

0.093

1.85

Jupiter

  5.2034

  778.6

    11.862

      4,332.6

398.9

13.1

0.048

1.31

Saturn

  9.5371

1433.5

    29.457

10,759

378.1

  9.7

0.054

2.48

Uranus

19.1913

2872.5

  84.01

30,685

369.7

  6.8

0.047

0.77

Neptune

30.0690

4495.1

164.79

60,189

367.5

  5.4

0.009

1.77