| Name | Symbol | Number | Exp | CGS Units | Relative Error (ppm) |
|---|---|---|---|---|---|
| speed of light in a vacuum | c | 2.99792458 | 10 | cm s-1 | exact |
| Planck constant | h | 6.6260755(40) | -27 | erg s | 0.60 |
| hbar | 1.05457266(63) | -27 | erg s | 0.60 | |
| Gravitational constant | G | 6.67259(85) | -8 | cm3 g-1 s-2 | 128 |
| Electron charge | e | 4.8032068(14) | -10 | esu | 0.30 |
| Mass of electron | me | 9.1093897(54) | -28 | g | 0.59 |
| Mass of proton | mp | 1.6726231(10) | -24 | g | 0.59 |
| Mass of neutron | mn | 1.6749286(10) | -24 | g | 0.59 |
| Mass of hydrogen | mH | 1.6733 | -24 | g | -- |
| Atomic mass unit | amu | 1.6605402(10) | -24 | g | 0.59 |
| Avagadro's number | NA | 6.0221367(36) | 23 | 0.59 | |
| Boltzmann constant | k | 1.380658(12) | -16 | erg k-1 | 8.5 |
| Electron volt | eV | 1.6021772(50) | -12 | erg | ~0.60 |
| Stefan-Boltzmann constant | \sigma | 5.67051(19) | -5 | erg cm-2 K-4 s-1 | 34 |
| Fine structure constant | \alpha | 7.29735308(33) | -3 | 0.045 | |
| Rydberg constant | R\inf | 2.1798741(13) | -11 | erg | 0.60 |
NAME SYMBOL NUMBER EXP CGS UNITS ---------------------------------------------------------------- Astronomical unit AU 1.496 13 cm Parsec pc 3.086 18 cm Light year ly 9.463 17 cm Solar mass Mo 1.99 33 g Solar radius Ro 6.96 10 cm Solar luminosity Lo 3.9 33 erg s-1 Solar Temperature To 5.780 3 K ----------------------------------------------------------------
NAME MASS RADIUS PERIOD SEMI-MAJOR ECCENTRICITY (g) (cm) (yr) (AU) ---------------------------------------------------------------------- Mercury 3.303e26 2.439e8 2.4085e-1 3.87096e-1 0.205622 Venus 4.870e27 6.050e8 6.1521e-1 7.23342e-1 0.006783 Earth 5.976e27 6.378e8 1.00004e0 9.99987e-1 0.016684 Mars 6.418e26 3.397e8 1.88089e0 1.523705e0 0.093404 Jupiter 1.899e30 7.140e9 1.18622e1 5.204529e0 0.047826 Saturn 5.686e29 6.000e9 2.94577e1 9.575133e0 0.052754 Uranus 8.66 e28 2.615e9 8.40139e1 1.930375e1 0.050363 Neptune 1.030e29 2.43 e9 1.64793e2 3.020652e1 0.004014 Pluto 1. e25 1.2 e8 2.47686e2 3.991136e1 0.256695 ----------------------------------------------------------------------