Home > Ephemeris Program, stars > 01/19/2015 – Ephemeris – Sirius, the brightest star in the night

01/19/2015 – Ephemeris – Sirius, the brightest star in the night

January 19, 2015

Ephemeris for Martin Luther King Day, Monday, January 19th.  The sun will rise at 8:14.  It’ll be up for 9 hours and 19 minutes, setting at 5:33.   The moon, 1 day before new, will rise at 7:53 tomorrow morning.  |  The star Sirius is the brightest night-time star in the heavens. It’s up on frosty winter evenings, and currently low in the southeastern sky in the early evening.  It can be found in line and left of the three stars of Orion’s belt.  It’s known as the Dog Star because it’s in the heart of the constellation Canis Major the greater dog.  Sirius, however means dazzling one or sparkling one due to its brightness and the long time it spends low to the horizon where our turbulent atmosphere breaks up its light as a sparkler of color in telescopes and binoculars.  Sirius owes its brightness mostly to its close proximity of 8.6 light years.  It is 25 times brighter than the sun.  It also has a white dwarf companion star nicknamed the Pup.

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

Addendum

Sirius A and B

Sirius A and B (near the diffraction spike to the lower left), A Hubble Space Telescope photograph. Credit NASA, ESA.

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