# Physics Notation Help

1. Feb 23, 2010

### FeDeX_LaTeX

Hi, what does this notation mean?

$$M_\odot$$

Does it mean mass?

Thanks

2. Feb 23, 2010

### torquil

It is the symbol for the solar mass, which is around 2x10^30 kg.

Ref:
http://en.wikipedia.org/wiki/Solar_mass

Torquil