17 September 2010

Mercury greatest Western elongation

On Sunday 19th, the planet Mercury will reach Greatest Western elongation. It is called Western elongation because the planet will be west of Sun, although we will be seeing the planet in Eastern horizon. Maximum angular separation of Mercury from the Sun will be 18degrees. As Mercury will be low in the horizon, clear horizon is essential. Mercury will rise at 5am and will reach little comfortable viewing altitude of 12 degrees at 5:50am.

Sun will rise at 6:08am on Sunday.

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