https://www.astro-init.top/index.php?action=history&feed=atom&title=2016%E5%B9%B4APAO%E7%90%86%E8%AE%BA%E7%AC%AC2%E9%A2%98-%E7%81%AB%E6%98%9F%E4%B8%8A%E7%9A%84%E8%A7%86%E5%B7%AE 2026-04-29T11:06:46Z 本wiki的该页面的版本历史 MediaWiki 1.32.2 https://www.astro-init.top/index.php?title=2016%E5%B9%B4APAO%E7%90%86%E8%AE%BA%E7%AC%AC2%E9%A2%98-%E7%81%AB%E6%98%9F%E4%B8%8A%E7%9A%84%E8%A7%86%E5%B7%AE&diff=1431&oldid=prev 2019-09-22T05:29:39Z

<p></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="zh-Hans-CN"> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">←上一版本</td> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">2019年9月22日 (日) 05:29的版本</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l8" >第8行：</td> <td colspan="2" class="diff-lineno">第8行：</td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>2.3 太阳的视差(用合适的角度单位)</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>2.3 太阳的视差(用合适的角度单位)</div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>2.4 (仅高年组) <del class="diffchange diffchange-inline">(地球的)月球的视差</del>(用合适的角度单位)</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>2.4 (仅高年组) <ins class="diffchange diffchange-inline">地球的视差</ins>(用合适的角度单位)</div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==解答==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==解答==</div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">地球上的常用视差有两种：周日视差和周年视差。周日视差用于测量太阳系内天体的距离，基线是地球的直径；周年视差用于测量太阳系外天体的距离，基线是地球绕太阳公转轨道的直径。</ins></div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">2.1 地球上的秒差距定义为在距离地球1秒差距的位置看地球公转轨道视直径为1″。那么，火星上的秒差距就定义为在距离火星1秒差距的位置看火星公转轨道视直径为1″。因为火星公转轨道的平均直径是地球的1.524倍，所以1火星秒差距也应为1.524地球秒差距等于1.524×3.26=4.97光年。</ins></div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">2.2 测量恒星使用周年视差。已知1火星秒差距也应为1.524地球秒差距，由表可知半人马座 α在地球上的视差为0.747″，因此它在火星上的视差为1.524×0.747″=1.13″。</ins></div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">2.3 测量太阳系内天体使用周日视差。火星上的太阳周日视差为$$\frac{3397km×2}{1.524×149600000km×2}=1.49×10^{-5}rad$$,将弧度化为角度为$$1.49×10^{-5}rad×206265≈3.1″$$。</ins></div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">2.4 对火星上的观测者而言，地球的视差随着时间的变化而变化。它在火星冲日时最大，在火星合日时最小。所以</ins></div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">$$P_{max}=\frac{3397km×2}{0.524×149600000km×2}=4.33×10^{-5}rad≈8.9″$$</ins></div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">$$P_{min}=\frac{3397km×2}{2.524×149600000km×2}=9.00×10^{-6}rad≈1.86″$$</ins></div></td></tr> </table>

Heavens above https://www.astro-init.top/index.php?title=2016%E5%B9%B4APAO%E7%90%86%E8%AE%BA%E7%AC%AC2%E9%A2%98-%E7%81%AB%E6%98%9F%E4%B8%8A%E7%9A%84%E8%A7%86%E5%B7%AE&diff=1353&oldid=prev 2019-09-20T05:08:25Z

<p>创建页面，内容为“==题目== 住在火星上的宇航员使用与地球人民同样的体系定义视差。请计算火星人民使用的下列数值： 2.1 秒差距 2.2 半人马…”</p> <p><b>新页面</b></p><div>==题目==<br /> 住在火星上的宇航员使用与地球人民同样的体系定义视差。请计算火星人民使用的下列数值：<br /> <br /> 2.1 秒差距<br /> <br /> 2.2 半人马座α(Cen α)的视差(用合适的角度单位)<br /> <br /> 2.3 太阳的视差(用合适的角度单位)<br /> <br /> 2.4 (仅高年组) (地球的)月球的视差(用合适的角度单位)<br /> <br /> ==解答==</div>

Heavens above