Planets - Gravity, Mass, Size?

<p>How interrelated are the 'big triplet' factors?<br />Is there a quick 'rule-of-thumb' that can account for these on a sliding scale?</p><p>Consider that Gravity needs no more than a two decimal point granularity, and is used in the basic mechanic effects with only a one decimal point granularity.</p><p><br /><table border="1" style="border: #f10d0d 1px solid"><caption><strong><font size="2">Planets</font></strong></caption><tbody><tr><td> <strong>Gravity</strong> </td><td><strong>Mass</strong> </td><td> <strong>Size</strong></td></tr><tr style="background-color: #bcbcbc"><td> 0.10</td><td> 0.10</td><td> 0.10</td></tr><tr><td> 0.20</td><td> ?</td><td> ?</td></tr><tr style="background-color: #bcbcbc"><td> 0.30</td><td> ?</td><td> ?</td></tr><tr><td> 0.40</td><td> ?</td><td> ?</td></tr><tr style="background-color: #5a5a5a"><td><font color="#ffffff"> ...</font></td><td><font color="#ffffff"> ...</font></td><td><font color="#ffffff"> ...</font></td></tr><tr style="background-color: #bcbcbc"><td><font color="#800000"> 1.0</font></td><td><font color="#800000"> 1.0</font></td><td><font color="#800000"> 1.0</font></td></tr><tr style="background-color: #5a5a5a"><td> <font color="#ffffff">...</font></td><td><font color="#ffffff"> ...</font></td><td><font color="#ffffff"> ...</font></td></tr><tr><td> 1.60</td><td> ?</td><td> ?</td></tr><tr style="background-color: #bcbcbc"><td> 1.70</td><td> ?</td><td> ?</td></tr><tr><td> 1.80</td><td> ?</td><td> ?</td></tr><tr style="background-color: #bcbcbc"><td> 1.90</td><td> ?</td><td> ?</td></tr><tr style="background-color: #5a5a5a"><td> <font color="#ffffff">...</font></td><td><font color="#ffffff"> ...</font></td><td><font color="#ffffff"> ...</font></td></tr></tbody></table>Obviously a simple chart does not work, all the variables need to be more dynamic...<br /><br />But can it be simplified close enough, to match the single-decimal-point granularity of SF's planetary gravity statistic?<br />Are there other factors that <strong><em>must</em></strong> be accounted for, to make this basic triplet function properly, even given such a low resolution requirment?</p>