北半球的四分仪流星雨

2024年1月11日

Quadrantids of the North
Image Credit & Copyright: 염범석 Yeom Beom-seok

Explanation: Named for a forgotten constellation, the Quadrantid Meteor Shower puts on an annual show for planet Earth’s northern hemisphere skygazers. The shower’s radiant on the sky lies within the old, astronomically obsolete constellation Quadrans Muralis. That location is not far from the Big Dipper asterism, known to some as the Plough, at the boundaries of the modern constellations Bootes and Draco. In fact the Big Dipper “handle” stars are near the upper right corner in this frame, with the meteor shower radiant just below. North star Polaris is toward the top left. Pointing back toward the radiant, Quadrantid meteors streak through the night in this skyscape from Jangsu, South Korea. The composite image was recorded in the hours around the shower’s peak on January 4, 2024. A likely source of the dust stream that produces Quadrantid meteors was identified in 2003 as an asteroid.

Tomorrow’s picture: good morning moon

北半球的四分仪流星雨
影像提供与版权: 염범석 Yeom Beom-seok

说明: 以早已遗忘的星座为名的四分仪（座）流星雨，是地球北半球观星人会追随的年度天文盛事之一。它于天空的辐射点，在已弃用的古老四分仪座之内，位于现代的牧夫座和天龙座之交界处，离北斗七星不远。在这幅主题影像里，指北的北极星位于左上角，北斗七星（或称牛犁）的斗柄在右上角，而其下方则是这群流星雨的辐射点。在这幅2024年1月4日摄于南韩长水郡的星空组合影像里，掠过夜空的四分仪流星之流星痕，皆可回溯到这个辐射点。造成四分仪流星雨的尘埃碎片流，在2003年判断可能是源自一颗小行星。

明日的图片: good morning moon