https://www.astro-init.top/index.php?action=history&feed=atom&title=2018%E5%B9%B4IAO%E7%90%86%E8%AE%BA%E9%AB%98%E5%B9%B4%E7%BB%84%E7%AC%AC4%E9%A2%98-%E7%A7%91%E4%BC%A6%E5%9D%A1%E5%9C%B0%E7%90%83%E9%9D%99%E6%AD%A2%E8%BD%A8%E9%81%93%E5%8D%AB%E6%98%9F2018年IAO理论高年组第4题-科伦坡地球静止轨道卫星 - 版本历史2026-05-01T11:39:57Z本wiki的该页面的版本历史MediaWiki 1.32.2https://www.astro-init.top/index.php?title=2018%E5%B9%B4IAO%E7%90%86%E8%AE%BA%E9%AB%98%E5%B9%B4%E7%BB%84%E7%AC%AC4%E9%A2%98-%E7%A7%91%E4%BC%A6%E5%9D%A1%E5%9C%B0%E7%90%83%E9%9D%99%E6%AD%A2%E8%BD%A8%E9%81%93%E5%8D%AB%E6%98%9F&diff=1406&oldid=prevDg1200：创建页面，内容为“==英文题目== '''Colombo. Geostationary satellite''' '''4.1.''' At what minimun zenith distance can a geostationary satellite be observed from Colombo? Suppose…”2019-09-21T03:23:55Z<p>创建页面，内容为“==英文题目== '''Colombo. Geostationary satellite''' '''4.1.''' At what minimun zenith distance can a geostationary satellite be observed from Colombo? Suppose…”</p>
<p><b>新页面</b></p><div>==英文题目==<br />
<br />
'''Colombo. Geostationary satellite'''<br />
<br />
'''4.1.''' At what minimun zenith distance can a geostationary satellite be observed from Colombo? Suppose that such a satellite is observed as a 2<sup>m</sup> star in the night sky.<br />
<br />
'''4.2.''' How long during a day(24<sup>h</sup>) can we see this satellite with the naked eye (in a clear sky)?<br />
<br />
'''4.3.''' Estimate teh size of the satellite, considering it a polished metallic sphere.<br />
<br />
==中文题目==<br />
'''科伦坡 地球静止卫星'''<br />
<br />
4.1 从科伦坡可以观测到的地球静止卫星的天顶距最小为多少？ 假设这样的卫星与夜空中的2等星光度相等。<br />
<br />
4.2 在一天（24小时）中我们可以用肉眼在晴朗的天空中看到这颗卫星多长时间？<br />
<br />
4.3 估计卫星的大小，考虑它是抛光金属球（反射率为100%）。<br />
==解答==<br />
参见[[2018年IAO理论低年组第4题-科伦坡地球静止轨道卫星]]</div>Dg1200