The Units switch above does not change the units of your calculation! It only specifies the units of the constants buttons for future entries!
| NAME | SYMBOL | NUMBER | CGS UNITS | |
|---|---|---|---|---|
| Velocity of light | c | 2.998 x 1010 | cm s-1 | |
| Planck constant | h | 6.626 x 10-27 | erg s | |
| Gravitational constant | G | 6.67 x 10-8 | cm3 g-1 s-2 | |
| Electron charge | e | 4.803 x 10-10 | esu | |
| Mass of electron | m_e | 9.1096 x 10-28 | g | |
| Mass of proton | m_p | 1.6724 x 10-24 | g | |
| Mass of neutron | m_n | 1.6747 x 10-24 | g | |
| Mass of hydrogen | m_H | 1.6733 x 10-24 | g | |
| Atomic mass unit | amu | 1.661 x 10-24 | g | |
| Avagadro's number | N_A | 6.0222 x 1023 | ||
| Boltzmann constant | k | 1.38 x 10-16 | erg K-1 | |
| Electron volt | ev | 1.602 x 10-12 | erg | |
| Rad'n density constant | a | 7.5646 x 10-15 | erg cm-3 K-4 | |
| Stefan-Boltzmann const | sigma | 5.67 x 10-5 | erg cm-2 K-4 s-1 | |
| Fine structure constant | \alpha | 7.29735308 x 10-3 | ||
| Rydberg constant | R | 2.17992 x 10-11 | erg | |
| Year | yr | 3.156 x 107 | s | |
| Astronomical unit | AU | 1.496 x 1013 | cm | |
| Parsec | pc | 3.086 x 1018 | cm | |
| Light year | ly | 9.463 x 1017 | cm | |
| Solar mass | M_sun | 1.99 x 1033 | g | |
| Solar radius | R_sun | 6.96 x 1010 | cm | |
| Solar Luminosity | L_sun | 3.9 x 1033 | erg s-1 | |
| Solar Temperature | T_sun | 5780 | K |
In the calculator above, the Period has been converted to seconds and the Semi-Major Axis has been changed to cm.
| Name | Mass (g) | Radius (cm) | Period (yr) | Semi-Major (AU) | Eccentricity |
|---|---|---|---|---|---|
| Mercury | 3.303 x 1026 | 2.439 x 108 | 2.4085 x 10-1 | 3.87096 x 10-1 | 0.205622 |
| Venus | 4.87 x 1027 | 6.05 x 108 | 6.1521 x 10-1 | 7.23342 x 10-1 | 0.006783 |
| Earth | 5.976 x 1027 | 6.378 x 108 | 1.00004 x 100 | 9.99987 x 10-1 | 0.016684 |
| Mars | 6.418 x 1026 | 3.397 x 108 | 1.88089 x 100 | 1.523705 x 100 | 0.093404 |
| Jupiter | 1.899 x 1030 | 7.14 x 109 | 1.18622 x 101 | 5.204529 x 100 | 0.047826 |
| Saturn | 5.686 x 1029 | 6 x 109 | 2.94577 x 101 | 9.575133 x 100 | 0.052754 |
| Uranus | 8.66 x 1028 | 2.615 x 109 | 8.40139 x 101 | 1.930375 x 101 | 0.050363 |
| Neptune | 1.03 x 1029 | 2.43 x 109 | 1.64793 x 102 | 3.020652 x 101 | 0.004014 |
| Pluto | 1 x 1025 | 1.2 x 108 | 2.47686 x 102 | 3.991136 x 101 | 0.256695 |
Note: This calculator was written and tested on a Unix computer. If it
looks bad to you, try making your window wider. The calculator looks especially
bad on Macs, unfortunately...
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