Mercury at Eastern Elongation

orbital-positions   Thursday May 7th at 5 UT (or midnight CDT Wednesday May 6th Mercury, the innermost planet, will reach its orbital position known as greatest eastern elongation. At that moment Mercury, the Sun, and the Earth, would be arranged in something close to approximating a right angle as this graphic shows.
   From our perspective Mercury, and Venus for that matter, appear to move out to the left (east) from the Sun for a period, then reverse and move westward between the Earth and the Sun to western elongation. From there the inner planet moves eastward going behind the Sun and eventually reappearing on the eastern side of the Sun for an eastern elongation. Repeat over and over – do not stop!
   Mercury is currently visible as an ‘evening star’ over the western horizon at sunset. The brighter planets Venus and Jupiter are very visible higher above the horizon. It may also be possible to see Mars – depending on your local horizon.

Caution: Objects viewed with an optical aid are further than they appear.
   Click here to go to the Qué tal in the Current Skies web site for more observing information for this month.

2 thoughts on “Mercury at Eastern Elongation

  1. Pingback: Mercury Moves Forward | Bob's Spaces

  2. Pingback: Mercury Ends Retrograde Motion | Bob's Spaces

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.