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TABLE OF THE PLANETS AND SUN

Planet	Distance (AU)¹	Rotation² Period	Orbital Period	Orbital Speed km/sec	Axis³ Tilt	Radius⁴ (x R_E)	Mass⁵ (x M_E)	M_D⁶ (x M_{D, E})	Dipole⁷ Tilt	Number^* of Moons
Sun	0.000	25 days^#	N/A	N/A	7.25^o&	109⁺	332,000	X^$	X^$	N/A
Mercury	0.387	58.7 days	88 days	47.9	~0^o	0.382	0.055	~4.7x10^-4	~10^o	0
Venus	0.723	243 days	225 days	35.0	-2^o	0.949	0.815	N/A	N/A	0
Earth	1.000	23.9 hrs	365 days	29.8	23.5^o	1.000	1.000	1.000	11.5^o	1
Mars	1.520	24.6 hrs	1.88 yrs	24.1	24^o	0.533	0.107	?	?	2
Jupiter	5.200	9.92 hrs	11.9 yrs	13.1	3.1^o	11.2	318	20,000	9.6^o	28 (63)
Saturn	9.540	10.7 hrs	29.5 yrs	9.64	29^o	9.45	95.2	540	0.7^o	18 (61)
Uranus	19.200	-17.29hrs	84.0 yrs	6.81	-82.1^o	4.1	14.6	48	59^o	17
Neptune	30.100	16.11 hrs	165 yrs	5.43	28.8^o	3.88	17.2	26	47^o	8
Pluto	39.400	6.39 days	248 yrs	4.74	>50^o?	~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.

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

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

⁵ The Earth's mass M_E = 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 M_D,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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