https://www.astro-init.top/index.php?action=history&feed=atom&title=2018%E5%B9%B4IOAA%E7%90%86%E8%AE%BA%E7%AC%AC5%E9%A2%98-%E6%81%92%E6%98%9F%E6%97%B6 2026-05-06T18:36:00Z 本wiki的该页面的版本历史 MediaWiki 1.32.2 https://www.astro-init.top/index.php?title=2018%E5%B9%B4IOAA%E7%90%86%E8%AE%BA%E7%AC%AC5%E9%A2%98-%E6%81%92%E6%98%9F%E6%97%B6&diff=242&oldid=prev 2019-07-18T07:56:13Z

<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7月18日 (四) 07:56的版本</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l35" >第35行：</td> <td colspan="2" class="diff-lineno">第35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;"></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>&lt;br /&gt;</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>&lt;br /&gt;</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;">[[分类:恒星时]]</ins></div></td></tr> </table>

Quan787 https://www.astro-init.top/index.php?title=2018%E5%B9%B4IOAA%E7%90%86%E8%AE%BA%E7%AC%AC5%E9%A2%98-%E6%81%92%E6%98%9F%E6%97%B6&diff=68&oldid=prev 2019-06-27T14:29:54Z

<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6月27日 (四) 14:29的版本</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >第1行：</td> <td colspan="2" class="diff-lineno">第1行：</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;">== 英文 ==</ins></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;"><div>'''(T5)''' '''Sidereal Time                                                                    (10 points)'''</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>'''(T5)''' '''Sidereal Time                                                                    (10 points)'''</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 colspan="2" class="diff-lineno" id="mw-diff-left-l9" >第9行：</td> <td colspan="2" class="diff-lineno">第10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>You may assume that at the Royal Greenwich Observatory, the mean sidereal time (GMST&lt;sub&gt;0&lt;/sub&gt;) was 6.706h at   0h, 1st January, 2018 (JD2458119.5).  </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>You may assume that at the Royal Greenwich Observatory, the mean sidereal time (GMST&lt;sub&gt;0&lt;/sub&gt;) was 6.706h at   0h, 1st January, 2018 (JD2458119.5).  </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 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;">== 中文 ==</ins></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;"><div>恒星时：</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>恒星时：</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 colspan="2" class="diff-lineno" id="mw-diff-left-l19" >第19行：</td> <td colspan="2" class="diff-lineno">第21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>假设在格林威治皇家天文台，在2018年1月1日0时（儒略日2458119.5）的平均恒星时是6.706h。</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>假设在格林威治皇家天文台，在2018年1月1日0时（儒略日2458119.5）的平均恒星时是6.706h。</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><del class="diffchange diffchange-inline">解答：</del></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><ins class="diffchange diffchange-inline">== 解答 ==</ins></div></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> </div></td><td colspan="2"> </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>基本概念</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>基本概念</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> </table>

Quan787 https://www.astro-init.top/index.php?title=2018%E5%B9%B4IOAA%E7%90%86%E8%AE%BA%E7%AC%AC5%E9%A2%98-%E6%81%92%E6%98%9F%E6%97%B6&diff=67&oldid=prev 2019-06-27T14:27:31Z

<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6月27日 (四) 14:27的版本</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l23" >第23行：</td> <td colspan="2" class="diff-lineno">第23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>基本概念</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>基本概念</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>恒星时的一天是以春分点两次上中天的时间间隔定义的，而太阳时的一天是以太阳两次下中天的时间间隔定义的。太阳在天球上每365天往西移动360度，所以太阳每天向西移动$360^\circ/365=0.9863^\circ$。又因360度对应24小时，所以太阳时的一天比恒星时一天长3.94分钟。</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>恒星时的一天是以春分点两次上中天的时间间隔定义的，而太阳时的一天是以太阳两次下中天的时间间隔定义的。太阳在天球上每365天往西移动360度，所以太阳每天向西移动<ins class="diffchange diffchange-inline">$</ins>$360^\circ/365=0.9863^\circ<ins class="diffchange diffchange-inline">$</ins>$。又因360度对应24小时，所以太阳时的一天比恒星时一天长3.94分钟。</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>(a)</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>(a)</div></td></tr> </table>

悲回风 https://www.astro-init.top/index.php?title=2018%E5%B9%B4IOAA%E7%90%86%E8%AE%BA%E7%AC%AC5%E9%A2%98-%E6%81%92%E6%98%9F%E6%97%B6&diff=65&oldid=prev 2019-06-27T14:27:06Z

<p>悲回风移动页面<a href="/index.php?title=2018IOAA_T5%E6%81%92%E6%98%9F%E6%97%B6&amp;action=edit&amp;redlink=1" class="new" title="2018IOAA T5恒星时（页面不存在）">2018IOAA T5恒星时</a>至<a href="/index.php?title=2018%E5%B9%B4IOAA%E7%90%86%E8%AE%BA%E7%AC%AC5%E9%A2%98-%E6%81%92%E6%98%9F%E6%97%B6" title="2018年IOAA理论第5题-恒星时">2018年IOAA理论第5题-恒星时</a></p> <table class="diff diff-contentalign-left" data-mw="interface"> <tr class="diff-title" lang="zh-Hans-CN"> <td colspan="1" style="background-color: #fff; color: #222; text-align: center;">←上一版本</td> <td colspan="1" style="background-color: #fff; color: #222; text-align: center;">2019年6月27日 (四) 14:27的版本</td> </tr><tr><td colspan="2" class="diff-notice" lang="zh-Hans-CN"><div class="mw-diff-empty">（没有差异）</div> </td></tr></table>

悲回风 https://www.astro-init.top/index.php?title=2018%E5%B9%B4IOAA%E7%90%86%E8%AE%BA%E7%AC%AC5%E9%A2%98-%E6%81%92%E6%98%9F%E6%97%B6&diff=64&oldid=prev 2019-06-27T14:25:52Z

<p>创建页面，内容为“&#039;&#039;&#039;(T5)&#039;&#039;&#039; &#039;&#039;&#039;Sidereal Time                                                                    (10 points)&#039;&#039;&#039; It is very interesti…”</p> <p><b>新页面</b></p><div>'''(T5)''' '''Sidereal Time                                                                    (10 points)'''<br /> <br /> It is very interesting to observe that on one particular calendar day each year, the mean sidereal time will twice be 00:00:00.<br /> <br /> (a) What will be the approximate R.A. of the Sun when this event happens?<br /> <br /> (b) Estimate the exact date in 2018 for this event.<br /> <br /> You may assume that at the Royal Greenwich Observatory, the mean sidereal time (GMST&lt;sub&gt;0&lt;/sub&gt;) was 6.706h at   0h, 1st January, 2018 (JD2458119.5). <br /> <br /> 恒星时：<br /> <br /> 在某一天时，人们观察到一个很有趣的事，就是恒星时会出现两次00:00:00。<br /> <br /> (a) 此时太阳的大致赤经是多少？<br /> <br /> (b)估计2018年这件事的具体日期<br /> <br /> 假设在格林威治皇家天文台，在2018年1月1日0时（儒略日2458119.5）的平均恒星时是6.706h。<br /> <br /> 解答：<br /> <br /> 基本概念<br /> <br /> 恒星时的一天是以春分点两次上中天的时间间隔定义的，而太阳时的一天是以太阳两次下中天的时间间隔定义的。太阳在天球上每365天往西移动360度，所以太阳每天向西移动$360^\circ/365=0.9863^\circ$。又因360度对应24小时，所以太阳时的一天比恒星时一天长3.94分钟。<br /> <br /> (a)<br /> <br /> 因为太阳时的一天比恒星时的一天要长，所以有可能在一天内恒星时出现再次零点。第一次出现在太阳时零点刚过，第二次出现在太阳时二十三点五十多钟那会儿。所以，太阳此时在秋分点，所以赤经应该是12小时。<br /> <br /> (b)<br /> <br /> 太阳时的零时对应的恒星时时间，每天会加上3.94分钟。在2018年1月1日太阳时0时时恒星是6.706时，则过大约263天，太阳时的0时也大约对应恒星时的0时了。此时为2018年的9月22日。<br /> <br /> &lt;br /&gt;</div>

悲回风