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<p>Hi everyone,</p>
<p>Resolution 3 of the 27th CGPM introduces 4 new decimal prefixes :</p>
<p><a class="moz-txt-link-freetext" href="https://www.bipm.org/en/cgpm-2022/resolution-3">https://www.bipm.org/en/cgpm-2022/resolution-3</a></p>
<table width="60%">
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<tr>
<td>10<sup>27</sup></td>
<td class="title-third">ronna</td>
<td>
<h4>R</h4>
</td>
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<tr>
<td>10<sup>–27</sup></td>
<td class="title-third">ronto</td>
<td>
<h4>r</h4>
</td>
</tr>
<tr>
<td>10<sup>30</sup></td>
<td class="title-third">quetta</td>
<td>
<h4>Q</h4>
</td>
</tr>
<tr>
<td>10<sup>–30</sup></td>
<td class="title-third">quecto</td>
<td>
<h4>q</h4>
</td>
</tr>
</tbody>
</table>
<p>I don't think they pose any issue with what we have in VOUnits.<br>
<a class="moz-txt-link-freetext" href="https://ivoa.net/documents/VOUnits/20220525/index.html">https://ivoa.net/documents/VOUnits/20220525/index.html</a><br>
</p>
<p>R is also used for rayleigh, but because bare unit prefixes are
ungrammatical,<br>
I don't think they pose any issue in the parsing.</p>
<p>I suggest these could be added to the Table 3 of the VOUnits
document.</p>
<p>Sébastien<br>
</p>
<pre class="moz-signature" cols="72">--
((( Sebastien Derriere <a class="moz-txt-link-abbreviated" href="mailto:sebastien.derriere@astro.unistra.fr">sebastien.derriere@astro.unistra.fr</a>
(. .) Observatoire de Strasbourg Phone +33 (0) 368 852 444
(( v )) 11, rue de l'universite Telefax +33 (0) 368 852 432
---m-m--- F-67000 Strasbourg France
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