Mercury’s greatest western elongation

As we know Mercury is the planet closest to our sun and it is very unlikely, we can see it on daily basis, but here’s an opportunity to see Mercury with telescope and even with our naked eyes. On the morning of 25th October 2021 at 9:15 IST Mercury (with respect to Earth) will be on the most Western point possible from sun at an altitude of 18 degrees from the horizon. As, like other planets, Mercury also have an elliptical orbit and because of the relative positions of Earth, Sun and Mercury; Mercury’s altitude starts increasing from 22nd September and reaches its peak on 25th October because of its greatest western elongation (increasing angular distance relative to us between Mercury from sun where Mercury drifts apart from Sun towards west) and then as gradually it occurred, it will start moving towards Sun and will be invisible because of Sun’s mighty bright light. So, 25th, 26th and 27th October are the best days to get a chance to see Mercury. So, what should you do to see Mercury?

(https://www.bing.com/images/search?view=detailV2&ccid=S2dSLJKr&id=FFFD2FD3F2A2C265D4EE3CA17918AF98D63ED1B0&thid=OIP.S2dSLJKrwGQj9m-pSniJ1gHaEI&mediaurl=https%3a%2f%2fth.bing.com%2fth%2fid%2fR.4b67522c92abc06423f66fa94a7889d6%3frik%3dsNE%252b1pivGHmhPA%26riu%3dhttp%253a%252f%252fd1jqu7g1y74ds1.cloudfront.net%252fwp-content%252fuploads%252f2013%252f03%252fMercury-elongations-580x324.jpg%26ehk%3dyWPh5Bv4WUSmCd%252fgxhiONUVo%252b3cmJxd3jHYRTLkjkH8%253d%26risl%3d%26pid%3dImgRaw%26r%3d0&exph=324&expw=580&q=mercury+elongation+perihelion&simid=608003310119563778&FORM=IRPRST&ck=ACFCA8FB76AAD053A6E887FA0896AEBE&selectedIndex=0&ajaxhist=0&ajaxserp=0)

To see mercury you just need to wake up early in the morning, on any of the above mentioned days, before sunrise, and look exactly toward East and the star that will just rise from the horizon or will be just above the horizon with nearly a magnitude of 0.8, will be our planet, make sure its not twinkling, it should be a stationary bright dot, you can use any tracking sky chart apps for this purpose. Make sure you see it as long as possible as soon after Sun will start to rise making Mercury invisible to our eyes, make sure to use eye protection equipment such as goggles, etc, to protect your eyes from Sun’s bright light. You can see Mercury for all three days, best chance on 27th October and after that you can still see it but not as good or as long as on our mentioned three days, and gradually it will again be lost till next elongation. Thank You   

(https://www.bing.com/images/search?view=detailV2&ccid=PXsLvnCJ&id=CCCA62409D03C3DC56CC3B72846C07B1440EEB47&thid=OIP.PXsLvnCJLHkrVvEQZ1KgxQHaHp&mediaurl=https%3a%2f%2fth.bing.com%2fth%2fid%2fR.3d7b0bbe70892c792b56f1106752a0c5%3frik%3dR%252bsORLEHbIRyOw%26riu%3dhttp%253a%252f%252fwww.alicesastroinfo.com%252fwp-content%252fuploads%252f2010%252f12%252fOrbitalVocabulary.jpg%26ehk%3dEmTaf7qxKIo91TNXj1e9yfYR%252bKAm0Cqf%252fuGNmrp8DDw%253d%26risl%3d%26pid%3dImgRaw%26r%3d0&exph=1087&expw=1052&q=mercury+elongation&simid=608053080197058816&FORM=IRPRST&ck=E3D0A304DE084E0B2977A57633246071&selectedIndex=1&ajaxhist=0&ajaxserp=0)

 

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