TABLE OF THE PLANETS AND SUN



Planet
Distance
(AU)1
Rotation2

Period
Orbital

Period

Orbital
Speed
km/sec
Axis3

Tilt

Radius4

(x RE)

Mass5

(x ME)

MD6

(x MD, E)

Dipole7

Tilt

Number*

of Moons

Sun0.000 25 days# N/A N/A 7.25o& 109+ 332,000 X$ X$ N/A
Mercury0.387 58.7 days 88 days 47.9 ~0o 0.382 0.055 ~4.7x10-4 ~10o 0
Venus0.723 243 days 225 days 35.0 -2o 0.949 0.815 N/A N/A 0
Earth1.000 23.9 hrs 365 days 29.8 23.5o 1.000 1.000 1.000 11.5o 1
Mars1.520 24.6 hrs 1.88 yrs 24.1 24o 0.533 0.107 ? ? 2
Jupiter5.200 9.92 hrs 11.9 yrs 13.1 3.1o 11.2 318 20,000 9.6o 28 (63)
Saturn9.540 10.7 hrs 29.5 yrs 9.64 29o 9.45 95.2 540 0.7o 18 (61)
Uranus19.200 -17.29hrs 84.0 yrs 6.81 -82.1o 4.1 14.6 48 59o 17
Neptune30.100 16.11 hrs 165 yrs 5.43 28.8o 3.88 17.2 26 47o 8
Pluto39.400 6.39 days 248 yrs 4.74 >50o? ~0.24 0.002 N.K.* N.K.* 1

Footnotes:

1 D(AU) is the planet's average distance from the Sun in units of A.U. See the glossary.

2 Rotation period is given in a "fixed" (i.e., non rotating) coordinate system with respect to the stars.

3 Tilt of the planet's rotation axis compared to a line perpendicular to its orbital plane.

4 The Earth's average radius at its equator, RE = 6378 km (or 3963 miles).

5 The Earth's mass ME = 5, 977, 000, 000, 000, 000, 000, 000, 000 kg.

6 The planet's magnetic dipole moment, which is a measure of the main part of its magnetic field, its dipole field, in units of MD,E, the Earth's Dipole moment, which is 79, 000, 000, 000, 000, 000, 000, 000, 000 Gauss-cm^3.

7 The dipole tilt is the angle between the planet's magnetic dipole axis and its rotation axis.

8 Number of known moons per planet; the total is 64 moons.

* N.K. means "not known."

# Rotation at the Sun's equator. It is slower at higher latitudes.

& Tilt of the rotation axis with respect to the Ecliptic plane.

+ The radius of the Sun refers to the radius of its photosphere.

$ The Sun's magnetic dipole moment and dipole tilt angle are highly variable. In fact, the dipole moment changes polarity approximately every 11 years. It is usually not too useful to describe only the dipole of the Sun when describing the Sun's magnetism, whose field geometry is very complicated.


This table is a modified, extended, and updated version of a table on the characteristics of the planets published by the Astronomical Society of the Pacific (1983)

Last Modified: December 12, 2003
orbital speed added 2011, and # of moons of Jupiter  and Saturn as per WIKI (Rolf Witzsche)

Original page at: http://wind.nasa.gov/mfi/lepedu/planets.htm -  a NASA site

 

NASA reference 
Curator: Albert E. Davison, International Technology and Management, Inc. E-mail: Albert.E.Davison@gsfc.nasa.gov
Responsible NASA Representative: Dr. Michael Collier E-mail: Michael.R.Collier@nasa.gov


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