# Table of Astronomical Data

In this module, you may find that certain constants are needed! You may find them by searching the web, or checking this table if it exists.

# Distances

Data for this table was collated from NASA's Space Science Data Coordinated Archive. ¹

Origin	Destination	Distance	Unit
Sun	Mercury	57.9	10^6 km
	Venus	108.2	10^6 km
	Earth	149.6	10^6 km
	Mars	228.0	10^6 km
	Jupiter	778.5	10^6 km
	Saturn	1432.0	10^6 km
	Uranus	2867.0	10^6 km
	Neptune	4515.0	10^6 km

Earth	Moon	384 400	km

# Masses

Data for this table was collated from NASA's Space Science Data Coordinated Archive. ¹

Body	Mass	Units
Mercury	0.330	10^{24} kg
Venus	4.87	10^{24} kg
Earth	5.97	10^{24} kg
Moon	0.073	10^{24} kg
Mars	0.642	10^{24} kg
Jupiter	1898	10^{24} kg
Saturn	568	10^{24} kg
Uranus	86.8	10^{24} kg
Neptune	102	10^{24} kg

# Radii

Data for this table was collated from NASA's Space Science Data Coordinated Archive. ¹

Why are the values on Google slightly different?

These values refer to the volumetric mean radii -- usually you'd find equatorial radii on search results. The difference is because planets spin, and hence they bulge a little at their equator! Regardless, it is safe to use either value for most calculations.

Body	Mass	Units
Mercury	2 439.7	km
Venus	6 051.8	km
Earth	6 371.0	km
Moon	1 737.4	km
Mars	3 389.5	km
Jupiter	69 911	km
Saturn	58 232	km
Uranus	25 362	km
Neptune	24 622	km

# Constants

Data for this table was collated from NASA/Caltech JPL - Solar System Dynamics. ²

Description	Symbol	Value	Unit	SI Unit
Speed of Light	c	2.9979 × 10^{8}	\frac{m}{s}
Gravitational Constant	G	6.6743 × 10^{-11}	\frac{m^3}{kg×s^2}
Planck Constant	h	6.6261 × 10^{-34}	\frac{J}{Hz}	\frac{kg×m^2}{s}
Stefan-Boltzmann	\delta	5.6704 × 10^{-8}	\frac{W}{m^2×K^4}	\frac{kg}{s^3×K^4}
Light year	ly	9.4608 × 10^{15}	m
Parsec	pc	3.2616	ly	-
Parsec	pc	3.0857×10^{16}	m

# External Links

NASA NSSDCA's Planetary Fact Sheets

# Table of Astronomical Data

# Distances

# Masses

# Radii

Why are the values on Google slightly different?

# Constants

# External Links

# References