<div>Cannon Material </div><div><br /></div>Cryxia (K5) star <span style="white-space: pre"> </span>Orange Dwarf Examples: <span style="color: #202122; font-family: sans-serif; font-size: 14px"> </span><a href="https://en.wikipedia.org/wiki/Epsilon_Indi" title="Epsilon Indi">Epsilon Indi</a> & <a href="https://en.wikipedia.org/wiki/61_Cygni" title="61 Cygni">61 Cygni</a><span style="color: #202122; font-family: sans-serif; font-size: 14px"> </span><span style="color: #202122; font-family: sans-serif; font-size: 14px">A </span><table border="0" class="infobox" style="font-size: 12.32px; border: 1px solid #a2a9b1; border-spacing: 3px; background-color: #f8f9fa; color: black; margin: 0.5em 0px 0.5em 1em; padding: 0.2em; clear: right; line-height: 1.5em; width: 22em; font-family: sans-serif"><tbody><tr><th class="infobox-label" style="vertical-align: top; text-align: left" scope="row">Mass range</th><td class="infobox-data" style="vertical-align: top">0.6M<sub style="line-height: 1; font-size: 9.856px">?</sub> to 0.9M<sub style="line-height: 1; font-size: 9.856px">?</sub></td></tr><tr><th class="infobox-label" style="vertical-align: top; text-align: left" scope="row">Temperature</th><td class="infobox-data" style="vertical-align: top">3900 <abbr title="degrees Kelvin" style="border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: currentcolor; cursor: help">°K</abbr> to 5300 <abbr title="degrees Kelvin" style="border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: currentcolor; cursor: help">°K</abbr></td></tr></tbody></table><span style="color: #202122; font-family: sans-serif; font-size: 14px">K-type main-sequence stars are about three to four times as abundant as G-type main-sequence stars, making planet searches easier.</span><sup style="line-height: 1; unicode-bidi: isolate; font-size: 11.2px; color: #202122; font-family: sans-serif" class="reference"><a href="https://en.wikipedia.org/wiki/K-type_main-sequence_star#cite_note-10">[… style="color: #202122; font-family: sans-serif; font-size: 14px">K-type stars emit less total </span><a href="https://en.wikipedia.org/wiki/Ultraviolet_radiation" title="Ultraviolet radiation">ultraviolet</a><span style="color: #202122; font-family: sans-serif; font-size: 14px"> and other </span><a href="https://en.wikipedia.org/wiki/Ionizing_radiation" title="Ionizing radiation">ionizing radiation</a><span style="color: #202122; font-family: sans-serif; font-size: 14px"> than G-type stars like the Sun (which can damage </span><a href="https://en.wikipedia.org/wiki/DNA" title="DNA">DNA</a><span style="color: #202122; font-family: sans-serif; font-size: 14px"> and thus hamper the emergence of nucleic acid based life). In fact, many peak in the red.</span><sup style="line-height: 1; unicode-bidi: isolate; font-size: 11.2px; color: #202122; font-family: sans-serif" class="reference"><a href="https://en.wikipedia.org/wiki/K-type_main-sequence_star#cite_note-11">[… face="sans-serif" color="#202122"><span style="font-size: 11.2px"><br /></span></font></div><div><h3 style="margin: 0.3em 0px 0px; padding-top: 0.5em; padding-bottom: 0px; overflow: hidden; font-size: 1.2em; line-height: 1.6; font-family: sans-serif"><span class="mw-headline">Radiation hazard</span><span style="font-size: small; font-weight: normal; margin-left: 1em; vertical-align: baseline; line-height: 0; unicode-bidi: isolate; margin-right: 0px" class="mw-editsection"><span style="margin-right: 0.25em; color: #54595d" class="mw-editsection-bracket">[</span><a href="https://en.wikipedia.org/w/index.php?title=K-type_main-sequence_star&am…; title="Edit section: Radiation hazard">edit</a><span style="margin-left: 0.25em; color: #54595d" class="mw-editsection-bracket">]</span></span></h3><p style="margin: 0.5em 0px; color: #202122; font-family: sans-serif; font-size: 14px">Despite K-stars' lower total UV output, in order for their planets to have habitable temperatures, they must orbit much near to their K-stars hosts, offsetting or reversing any advantage of a lower total UV output. There is also growing evidence that K-type dwarf stars emit dangerously high levels of X-rays and far ultraviolet (FUV) radiation for considerably longer into their early <a href="https://en.wikipedia.org/wiki/Main_sequence" title="Main sequence">main sequence</a> phase than do either heavier G-type stars or lighter early M-type dwarf stars.<sup style="line-height: 1; unicode-bidi: isolate; font-size: 11.2px" class="reference"><a href="https://en.wikipedia.org/wiki/K-type_main-sequence_star#cite_note-Riche…; This prolonged radiation saturation period may be sterilising, destroying the atmospheres of, or at least delaying the emergence of life for Earth-like planets orbiting inside the habitable zones around K-type dwarf stars</p><p style="margin: 0.5em 0px; color: #202122; font-family: sans-serif; font-size: 14px"> </p><p style="margin: 0.5em 0px; color: #202122; font-family: sans-serif; font-size: 14px"><span style="color: #202124; font-family: 'Google Sans', Roboto, arial, sans-serif; font-size: 20px">A K-type star's habitable zone approximately ranges between </span><span style="background-color: rgba(80, 151, 255, 0.18); color: #040c28; font-family: 'Google Sans', Roboto, arial, sans-serif; font-size: 20px">0.1–0.4 to 0.3–1.3 AU</span><span style="color: #202124; font-family: 'Google Sans', Roboto, arial, sans-serif; font-size: 20px"> from the star. Here, exoplanets will receive only a relatively small amount of ultraviolet radiation, especially so towards the outer edge.</span></p><p style="margin: 0.5em 0px; color: #202122; font-family: sans-serif; font-size: 14px"><span style="color: #202124; font-family: 'Google Sans', Roboto, arial, sans-serif; font-size: 20px">Pi'Ka'Nair orbit: 0.2 AU T'Zaan orbit: 1.2 Au</span></p><br /><table border="0"><tbody><tr><td>Body </td><td> PR</td><td> Pop</td><td>TR </td><td>Grav </td><td>Day </td><td>Sat </td><td> Moons</td><td>Uses </td></tr><tr><td> Pi'Ka'Nair</td><td> *</td><td> Hvy</td><td> A</td><td> 0.5</td><td> 12</td><td> None</td><td> Bu'd</td><td> None</td></tr><tr><td> T'Zaan</td><td> *</td><td> Mod</td><td> A</td><td> 1.0</td><td> 20</td><td> TS</td><td> None</td><td> </td></tr></tbody></table><br />Pi'Ka'Nair is warmer and T'Zaan is cooler</div><div><br /></div><div>Note to self: compute a 1 AU journey between the two inhabited planets </div><div><br /></div><div><br /></div><div><br /><div><br /></div></div>
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