Home > Conjunction, GTAS Outreach Event, Mercury, Observing, Venus > 01/09/2015 – Ephemeris – Tomorrow Mercury almost makes a conjunction with Venus but falls back

01/09/2015 – Ephemeris – Tomorrow Mercury almost makes a conjunction with Venus but falls back

January 9, 2015

Ephemeris for Friday, January 9th.  The sun will rise at 8:19.  It’ll be up for 9 hours and 1 minute, setting at 5:20.   The Moon, 4 days before last quarter, will rise at 10:06 this evening.

Low in the southwest just after sunset, say around 6 to 6:15 in the evening Venus and Mercury can be seen seeming to flirt with one another.  Venus has been moving away from the Sun in the evening sky for a couple of month’s not, but hasn’t been all that visible.  Mercury, named after the messenger of the gods is fleet of orbit and is almost about to catch up with Venus.  Except it can’t, not this time.   Tomorrow evening Mercury will appear closest to Venus about 0.6 angular degrees away, a bit more than the width of the Moon.  So for another day the two planets will appear close.  But after tomorrow night they will separate with Mercury not able to keep up.  Next Tuesday it will reach its greatest elongation or separation from the sun and fall back.

Times are for the Traverse City/Interlochen area of Michigan.  They may be different for your location.


Venus and Mercury

Venus, the straight track, and Mercury are shown for every evening from yesterday 1/08/15 to 01/23/15. The planets are marked for every night at 6 p.m. and tagged every other day. with month-day and magnitude. The higher the magnitude value the dimmer it is. Created using Cartes du Ceil (Sky Charts).

  1. Richard Fidler
    January 9, 2015 at 4:15 pm

    How come hours of daylight changes very slowly around the solstice, but very rapidly around the equinoxes?

    • January 10, 2015 at 3:09 am

      Good question, see the post of 1/10/2015.


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