“花雪隨風(fēng)不厭看,更多還肯失林巒?!薄吨袊煳哪隁v》顯示,11月22日16時20分迎來2022年“小雪”節(jié)氣。
天象預(yù)報
小雪——大雪
太陽
從天蝎座運行至黃道所在的第13個星座——蛇夫座。目前太陽活動性不強,太陽正面有數(shù)群小黑子,可通過帶減光的望遠(yuǎn)鏡觀測。
月亮
11月30日上弦月,傍晚可見半圓形的月球恰好位于南方。
水星
由天蝎座穿過蛇夫座順行至人馬座。與太陽的角距離逐漸拉大,11月23日,水星合金星,日落后可在開闊地帶用望遠(yuǎn)鏡嘗試觀測。
金星
由天蝎座穿過蛇夫座順行至人馬座。與太陽的角距離逐漸拉大,日落后可在開闊地帶用望遠(yuǎn)鏡嘗試觀測。
火星
在金牛座逆行?;鹦且呀咏鼪_日,進(jìn)入一年中觀測條件最好的時期,夜晚6時左右升起,黎明前都可以觀測。
木星
在雙魚座,11月24日木星留,之后由逆行轉(zhuǎn)為順行。傍晚,明亮的木星位于東南方夜空,黎明前從西方落下。
土星
在摩羯座順行。入夜位于南方天空,前半夜可以觀測。
小知識
金星在夜空中的亮度僅次于月亮,最大亮度可達(dá)-4.9等。金星在中國古代被稱作“太白”,由于是內(nèi)行星,金星總是出現(xiàn)在太陽兩側(cè),最大角距離約為48°,金星在黎明前出現(xiàn)在東方時被叫做“啟明星”,黃昏時出現(xiàn)在西方時又被稱為“長庚星”。
金星是距離太陽第二近的行星,公轉(zhuǎn)周期約224.3天,軌道半長軸約為1.082億千米(0.723天文單位),金星的繞日公轉(zhuǎn)軌道非常接近圓形,偏心率僅為0.0068,是八大行星中最小的。金星的自轉(zhuǎn)也是太陽系行星中最慢的,自轉(zhuǎn)一周大約需要243天,并且是逆行的,自東向西轉(zhuǎn)動(地球是自西向東轉(zhuǎn)動)。但是自轉(zhuǎn)和公轉(zhuǎn)兩個效應(yīng)的疊加使得金星上的一個晝夜長度約為116.75天。
金星是類地行星,與地球堪稱“姊妹星”,它的平均半徑為6052千米,是地球的0.95倍;質(zhì)量是地球的0.82倍;平均密度為5.24g/cm3(地球5.52g/cm3),表面加速度為8.87m/s2,與地球都比較接近。但是金星表面的大氣壓是地球的九十多倍,96%以上都是二氧化碳,并布滿了硫酸等物質(zhì)形成的濃霧,強烈的溫室效應(yīng)使得金星表面的溫度達(dá)460℃之多,對生命來說是嚴(yán)酷的禁地。
The Minor Snow
The twentieth solar term of 2022 , Minor Snow (Xiaoxue in Chinese), falls on November 22nd at 16:20, when the longitude of the Sun reaches 240o. The Minor Snow marks the deepening of winter. From this point, snowflakes might be seen dancing in the air, adding a sense of poetic romance to the harsh winter.
Astronomical Forecast
Minor Snow —— Major Snow
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The Sun
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The Sun travels from Scorpio to the thirteenth constellation on the zodiac: Ophiuchus. Currently, solar activity is low, with a few groups of sunspots on its surface. They can be observed through a telescope with a solar filter.
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The Moon
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The Moon is at first quarter on Nov. 30th. At dusk, a semicircular moon is located in the south.
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Mercury
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Mercury travels in prograde motion from Scorpio to Sagittarius via Ophiuchus. Its angular distance to the Sun continues to increase. On Nov. 23rd, Mercury is at conjunction with the Venus. They can be observed after sunset in an open area.
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Venus
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Venus travels from Scorpio to Sagittarius via Ophiuchus in prograde motion. Its angular distance to the Sun continues to increase and can be observed after sunset in an open area.
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Mars
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Mars travels in retrograde motion in Taurus. Mars is now near opposition, and in the best time of the year to observe. It rises at 6 p.m., and remains observable until dawn.
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Jupiter
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Jupiter travels in Pisces. It is stationary on Nov. 24th, after which, it changes from retrograde motion to prograde motion. At dusk, the bright Jupiter appears in the southeastern sky. It falls in the western sky before dawn.
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Saturn
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Saturn travels in prograde motion in Capricornus. It appears in the southern sky at nightfall and can be observed in the earlier portion of the night.
輪值主編:朱聽雷
制作、編輯:王科超
英文版設(shè)計:朱曼清
(金陵中學(xué))ZHU manqing