2026首个“超级月亮”现身夜空，年度最大满月年末见

Core Viewpoint - The recent appearance of the "supermoon" on January 3, 2026, has sparked curiosity about its frequency and scientific definition, as it is often perceived as occurring more frequently than expected [1][3]. Group 1: Definition and Characteristics - The term "supermoon" is not a scientific definition but rather a popular term that corresponds to the professional term "perigee full moon" [3]. - The moon orbits the Earth in an elliptical path, with the closest point called perigee and the farthest point called apogee. A full moon occurring near perigee is termed a "supermoon" [3][5]. - The visual effect of a "supermoon" is most pronounced when the full moon coincides closely with the time the moon reaches perigee [5][8]. Group 2: Frequency and Observations - The perception of frequent "supermoons" is attributed to increased public attention and a broad definition of the term [8]. - In reality, a true "supermoon" occurs only once a year, with the next one in December 2026 [5][7]. - The current "supermoon" is considered less significant compared to those in November and December 2025, as it occurred over a day and a half after reaching perigee [8]. Group 3: Distance and Size - The average distance from the Earth to the moon is approximately 384,400 kilometers, with the closest distance being around 350,000 kilometers. The recent "supermoon" was about 360,000 kilometers away, which is still relatively close [8].