Today Mercury will be at inferior conjunction. After today the planet will reappear in the dawn, rising high enough from the Sun’s glow to be seen in mid September.
Inferior conjunction is when the planet passes between the Sun and the Earth. As such the only planets to see inferior conjunction are Mercury and Venus. A transit is possible if the planet passes directly in front of the Sun, but normally this alignment does not occur, the planet passing above or below the Sun as seen from the Earth. There are no transits of Mercury in 2017, the next will be Nov 11, 2019.
|Mercury Events for 2017|
|Maximum Elongation||Jan 19||24.1°W||+0.0|
|Superior Conjunction||Mar 6|
|Maximum Elongation||Apr 1||19.0°E||+0.2|
|Inferior Conjunction||Apr 19|
|Maximum Elongation||May 17||25.8°W||+0.7|
|Superior Conjunction||Jun 21|
|Maximum Elongation||Jul 30||27.2°E||+0.6|
|Inferior Conjunction||Aug 26|
|Maximum Elongation||Sep 12||17.9°W||-0.1|
|Superior Conjunction||Oct 8|
|Maximum Elongation||Nov 24||22.0°E||-0.1|
|Inferior Conjunction||Dec 12|
|Source: NASA Sky Calendar and the Mercury Chaser’s Calculator|