Constants

NAME			SYMBOL	NUMBER	EXP	CGS UNITS
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Velocity of light	c	2.998	10	cm s-1
Planck constant		h	6.626	-27	erg s
Gravitational constant	G	6.67	-8	dyn cm2 g-2
Electron charge		e	4.803	-10	esu
Mass of electron	m_e	9.1096	-28	g
Mass of proton		m_p	1.6724	-24	g
Boltzmann constant	k	1.380	-16	erg K-1
Electron volt		ev	1.602	-12	erg
Stefan-Boltzmann const	\sigma	5.67	-5	erg cm-2 K-4 s-1

Year			year	3.156	7	s
Astronomical unit	AU	1.496	13	cm
Parsec			pc	3.086	18	cm
Solar mass		M_\sun	1.99	33	g
Solar radius		R_\sun	6.96	10	cm
Solar luminosity	L_\sun	3.9	33	erg s-1
Solar Temperature	T_\sun	5.780	3	K
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NAME	MASS (g)  RADIUS (cm) PERIOD (yr) SEMI-MAJOR (AU) ECCENTRICITY
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Mercury	3.303 26  2.439  8    2.4085  -1  3.87096  -1     0.205622
Venus	4.870 27  6.050  8    6.1521  -1  7.23342  -1     0.006783
Earth	5.976 27  6.378  8    1.00004  0  9.99987  -1     0.016684
Mars	6.418 26  3.397  8    1.88089  0  1.523705  0     0.093404
Jupiter	1.899 30  7.140  9    1.18622  1  5.204529  0     0.047826
Saturn	5.686 29  6.000  9    2.94577  1  9.575133  0     0.052754
Uranus	8.66  28  2.615  9    8.40139  1  1.930375  1     0.050363
Neptune	1.030 29  2.43   9    1.64793  2  3.020652  1     0.004014
Pluto	1.    25  1.2    8    2.47686  2  3.991136  1     0.256695
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More constants

• NIST