秋分September Equinox
太陽直射赤道,晝夜等長;此後北半球夜晚逐漸變長,觀測季節開始。Day and night are nearly equal; nights in the Northern Hemisphere grow longer from here.
流星雨極大期、日月食、行星衝與二分二至,附倒數提醒。日期以台灣時間為準。Meteor shower peaks, eclipses, planetary oppositions and solstices — with countdowns. Dates in Taiwan time.
太陽直射赤道,晝夜等長;此後北半球夜晚逐漸變長,觀測季節開始。Day and night are nearly equal; nights in the Northern Hemisphere grow longer from here.
海王星距地球最近、整夜可見,需望遠鏡觀測,呈現淡藍色小圓盤。Neptune is closest and visible all night; a telescope shows a tiny pale-blue disc.
土星距地球最近、最亮,整夜可見;衝日前後幾天環會因「衝效應」明顯變亮。Saturn is at its brightest and closest, visible all night; the rings brighten from the opposition surge.
少數傍晚就能觀測的流星雨,輻射點在天龍座頭部;平時數量少,但曾多次爆發。An early-evening shower with the radiant in Draco. Usually weak but has produced major outbursts.
同樣來自哈雷彗星,流星速度快而明亮;輻射點在獵戶座與雙子座之間,下半夜最佳。Also from Halley’s Comet; fast, bright meteors. Radiant between Orion and Gemini, best after midnight.
以週期性流星暴聞名(33 年週期),平常年份數量不多,但流星速度極快。Famous for periodic storms every ~33 years. Normally modest, with very fast meteors.
天王星整夜可見,雙筒望遠鏡即可辨認,呈淡綠色星點。Uranus is visible all night; binoculars reveal a faint greenish point.
全年最穩定、數量最多的流星雨,來自小行星法厄同;傍晚即可開始觀測,深夜達高峰。The most reliable and prolific shower of the year, from asteroid Phaethon. Starts early evening, peaks late night.
北半球一年中夜晚最長的一天,是深空攝影的黃金時段。The longest night of the year in the Northern Hemisphere — prime time for deep-sky imaging.
年末的小型流星雨,輻射點靠近北極星,整夜可見;數量少但偶有小爆發。A minor year-end shower near Polaris, visible all night. Low rates with occasional bursts.
年度三大流星雨之一,極大期非常短(僅數小時),輻射點在牧夫座北方,下半夜觀測最佳。One of the big three; a very sharp peak lasting only hours. Radiant near Boötes, best after midnight.
環食帶通過南美洲南部與大西洋、非洲西部;台灣不可見。Annularity crosses southern South America, the Atlantic and West Africa. Not visible from Taiwan.
火星距地球最近、最亮,是拍攝火星表面細節的最佳時機,約每 26 個月一次。Mars is closest and brightest — the best window for surface detail, once every ~26 months.
月球僅進入地球半影,亮度略減、肉眼不易察覺。The Moon passes only through Earth’s penumbra — a subtle dimming, hard to notice by eye.
木星整夜可見、視直徑最大,大紅斑與四大衛星是入門觀測的首選目標。Jupiter is visible all night at maximum size; the Great Red Spot and Galilean moons are classic targets.
晝夜等長;春季銀河將在下半夜升起。Equal day and night; the spring Milky Way rises after midnight.
歷史最悠久的流星雨之一,偶有爆發;輻射點在織女星附近,下半夜天頂高度佳。One of the oldest recorded showers with occasional outbursts. Radiant near Vega, best after midnight.
哈雷彗星的塵埃,流星速度快、常有持續痕;黎明前 2 小時最佳,南半球條件更好。Debris from Halley’s Comet; fast meteors with persistent trains. Best two hours before dawn.
北半球白晝最長;夏季銀河核心在午夜前後高掛南方天空。Longest day in the north; the galactic core rides high in the south around midnight.
半影月食,月面亮度略減。A penumbral eclipse with slight dimming of the Moon.
全食帶經西班牙南部、北非、埃及、沙烏地阿拉伯;埃及樂蜀附近全食長達 6 分 23 秒,為本世紀最長。台灣不可見。Totality crosses southern Spain, North Africa, Egypt and Saudi Arabia; up to 6m23s near Luxor — the longest this century. Not visible from Taiwan.
夏季最受歡迎的流星雨,數量多、火流星比例高,整夜可見,午夜後至黎明最佳。The summer favourite: high rates and many fireballs. Visible all night, best after midnight.
半影月食。Penumbral lunar eclipse.
晝夜等長,觀測季節再度開始。Equal day and night; observing season begins again.
少數傍晚就能觀測的流星雨,輻射點在天龍座頭部;平時數量少,但曾多次爆發。An early-evening shower with the radiant in Draco. Usually weak but has produced major outbursts.
土星整夜可見;土星環傾角逐年變化,值得逐年比較。Saturn visible all night; the ring tilt changes year on year and is worth comparing.
同樣來自哈雷彗星,流星速度快而明亮;輻射點在獵戶座與雙子座之間,下半夜最佳。Also from Halley’s Comet; fast, bright meteors. Radiant between Orion and Gemini, best after midnight.
以週期性流星暴聞名(33 年週期),平常年份數量不多,但流星速度極快。Famous for periodic storms every ~33 years. Normally modest, with very fast meteors.
全年最穩定、數量最多的流星雨,來自小行星法厄同;傍晚即可開始觀測,深夜達高峰。The most reliable and prolific shower of the year, from asteroid Phaethon. Starts early evening, peaks late night.
年末的小型流星雨,輻射點靠近北極星,整夜可見;數量少但偶有小爆發。A minor year-end shower near Polaris, visible all night. Low rates with occasional bursts.
年度三大流星雨之一,極大期非常短(僅數小時),輻射點在牧夫座北方,下半夜觀測最佳。One of the big three; a very sharp peak lasting only hours. Radiant near Boötes, best after midnight.
事件日期取自公開天文年曆並以台灣時區整理;流星雨極大期可能前後一天,實際觀測請搭配「天氣觀測」確認雲量與月相。 Dates compiled from public astronomical almanacs in Taiwan time; meteor peaks may shift by a day. Check the Weather page for cloud cover and Moon phase before heading out.