The following is a list of the values of many widely-used physical units, expressed in SI units in easily-pasteable form. Some of the values below are taken from the Gnu Scientific Library, which in turn takes its values from Mohr, Taylor & Newell (2008). Others, such as the lightyear and the parsec are derived from these values. Others are less precisely defined.

Astronomical unit 1.4959787e+11  m
Ceres mass        9.43e+20       kg
Earth mass        5.9742e+24     kg
Erg               1e-07          J
Jupiter mass      1.8986e+27     kg
Lightminute       1.79875475e+10 m
Lightyear         9.4605362e+15  m
Lunar mass        7.3477e+22     kg
Parsec            3.08567758e+16 m
Solar luminosity  3.839e+26      W
Solar mass        1.98892e+30    kg

For more information, see the PyXPlot manual.

References

Mohr, P.J., Taylor, B.N., Newell, D.B., CODATA Recommended Values of the Fundamental Physical Constants: 2006, Reviews of Modern Physics, 80(2), pp. 633–730 (2008).

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