猎户座流星雨本周达峰值 专家建议黎明前观测

猎户座流星雨将在本周早些时候迎来峰值，其中周四早晨至周六期间为最佳观测窗口1。这场流星雨由哈雷彗星遗留的碎屑引发，每年十月出现1。在正常条件下，观测者每小时可看到20至30颗流星1。

本次流星雨的观测条件受到明亮满月的影响1。天文学家指出，月光可能使可见流星数量减少达50%1。为了获得最佳观测效果，专家建议在黎明前观测，最理想的时间窗口为周四凌晨3至4点（澳洲东部夏令时），此时月亮将在凌晨2至3点才会落下1。

猎户座流星雨已被观测至少2500年，最早的报告可追溯到公元前800年左右1。下一场观测条件良好的猎户座流星雨将出现在2070年1。天文爱好者如计划观测其他流星雨，可将目光投向12月中旬的双子座流星雨，该流星雨预计在12月14日左右达到峰值，可产生每小时多达150颗流星1。

The Orionid meteor shower is set to reach its peak early this week, with the best viewing window extending from Thursday morning through Saturday 1. Caused by debris left behind by Halley's Comet, this annual October phenomenon typically produces between 20 and 30 meteors per hour under ideal conditions 1.

However, astronomers caution that a bright full moon will significantly hamper visibility, potentially reducing the number of visible meteors by as much as 50 percent 1. To maximize viewing opportunities, observers are advised to watch before dawn, with the optimal time falling between 3 and 4 a.m. on Thursday 1. The moon will not set until 2 to 3 a.m. 1. The Orionid shower has been documented for at least 2,500 years, with the earliest recorded observations dating back to around 800 BCE 1. Skywatchers hoping for better viewing conditions will need to wait until 2070 for the next favorable opportunity 1.