Venus Reaches Peak Brightness in September! Jupiter and Ve-nus Dancing with the Moon
September’s evening skies will be dominated by Venus, the brightest planet in the night sky. According to the Taipei Astronomical Museum, Venus will reach its greatest brightness on September 19 (Saturday), shining brilliantly in the western sky after sunset. In addition, Jupiter and Venus will take turns making close approaches to the waning crescent and young crescent Moon. Weather permitting, we will have opportunities to enjoy beautiful scenes of the planets and Moon shining together in the early morning or evening skies.The first celestial event will be the Moon-Jupiter conjunction at 2:11 a.m. on September 9 (Wednesday). The two celestial bodies will be separated by just 0.84 degrees, with Jupiter shining at about magnitude -1.8. The Moon will rise above the horizon at 3:24 a.m. Looking toward the low eastern sky, observers can easily spot brilliant Jupiter accompanying the slender waning crescent Moon. The two will gradually move farther apart as dawn approaches.Next comes the Moon-Venus conjunction at 7:11 p.m. on September 14 (Monday). Venus and the young crescent Moon will be only 0.52 degrees apart—roughly the width of one full Moon. After sunset, look toward the low western sky to see Venus, shining at an impressive magnitude of -4.7, alongside the crescent Moon. The pair will appear to draw even closer until the Moon sets. This beautiful sight can be enjoyed with the naked eye, viewed through binoculars, or captured with a camera.On September 19, September’s celestial highlight reaches its finale with Venus at Greatest Brightness. Venus will reach a visual magnitude of -4.8. Through a small telescope, it will appear as a thin crescent, but because Venus is relatively close to Earth and has a large apparent diameter, its overall brightness will nevertheless reach its peak. Venus will be especially dazzling in the western sky after sunset.For more information about celestial events in September, please visit the Taipei Astronomical Museum website.