html/encyclopedia/astronomy.html


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			<p class="pageTitle">Leksikon<sub> Astronomi</sub></p>
			<div class="section" id="measures-and-units">
				<p class="large">Mål og Enheder</p>
				<p>Jf. <a href="/html/encyclopedia/physics.html">fysikkens mål og enheder</a>.</p>
				<p>Mål med variante enheder:</p>
				<table>
					<tr>
						<th>Mål</th>
						<th>Enheder</th>
						<th>Symboler<sub> af enheder</sub></th>
					</tr>
					<tr>
						<td rowspan="2">masse</td>
						<td>jupitermasse</td>
						<td class="math">\(M_J\)</td>
					</tr>
					<tr>
						<td>solmasse</td>
						<td class="math">\(M_&#9737;\)</td>
					</tr>
					<tr>
						<td rowspan="6">afstand</td>
						<td>astronomisk enhed</td>
						<td class="math">\(au\)</td>
					</tr>
					<tr>
						<td>lyssekund</td>
						<td class="math">\(ls\)</td>
					</tr>
					<tr>
						<td>lysår</td>
						<td class="math">\(ly\)</td>
					</tr>
					<tr>
						<td>parsec</td>
						<td class="math">\(pc\)</td>
					</tr>
					<tr>
						<td>jupiterradius</td>
						<td class="math">\(R_J\)</td>
					</tr>
					<tr>
						<td>solradius</td>
						<td class="math">\(R_&#9737;\)</td>
					</tr>
					<tr>
						<td rowspan="2">tid</td>
						<td>år</td>
						<td class="math">\(a\)</td>
					</tr>
					<tr>
						<td>dag</td>
						<td class="math">\(d\)</td>
					</tr>
				</table>
				<p class="math">\(1\ M_J=189\ 813 \cdot 10^{22}\ kg\)</p>
				<p class="math">\(1\ M_&#9737;=19\ 8847 \cdot 10^{25}\ kg\)</p>
				<br />
				<p class="math">\(1\ au=149\ 597\ 870\ 700\ m\)</p>
				<p class="math">\(1\ ls=c \cdot 1\ s=299\ 792\ 458\ m\)</p>
				<p class="math">\(1\ ly=c \cdot 31\ 557\ 600\ s=9\ 460\ 730\ 472\ 580\ 800\ m\)</p>
				<p class="math">\(1\ pc=1\ au \cdot cot(1^{\prime \prime})=30\ 856\ 775\ 814\ 671\ 916\ m\)</p>
				<p class="math">\(1\ R_J=71492 \cdot 10^{3}\ m\)</p>
				<p class="math">\(1\ R_&#9737;=6957 \cdot 10^{5}\ m\)</p>
				<br />
				<p class="math">\(1\ a=\frac{1461}{4}\ d=315576 \cdot 10^2\ s\)</p>
				<p class="math">\(1\ d=864 \cdot 10^2\ s\)</p>
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