Jupiter Goes Retro

   The giant outer planet Jupiter slows down and reverses its orbital motion on Monday February 6th as it begins its more or less annual retrograde motion. Retrograde motion is an apparent motion that occurs for an outer planet (past Earth’s orbit) when the faster moving Earth catches up with and then passes by the outer planet. During this retrograde motion Jupiter will move westward starting near the blue-white star Spica in Virgo the Harvest Maiden.

   Jupiter currently rises about around midnight local time and is very visible above the southwestern horizon sunrise.


Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to return to bobs-spaces.

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