Home > Ephemeris Program, Exoplanets, Fomalhaut b > 12/05/2016 – Ephemeris – The planet’s name is Dagon

12/05/2016 – Ephemeris – The planet’s name is Dagon

December 5, 2016

Ephemeris for Monday, December 5th.  The Sun will rise at 8:04.  It’ll be up for 8 hours and 57 minutes, setting at 5:02.  The Moon, 2 days before first quarter, will set at 11:02 this evening.

The lonely bright star low in the south-southwest at 8 p.m. these evenings is Fomalhaut the harbinger of autumn in my book, and about to leave as winter approaches.  Fomalhaut means fishes mouth and is located at the head of Piscis Austrinus, a very dim constellation.  Fomalhaut is a young white star only about 400 million years old with a disk of dust surrounding it.  Near an outer dust ring, 14 years ago the Hubble Space Telescope discovered a spot.  Four years later astronomers discovered that the spot moved along the dust lane and announced the first direct discovery of an exoplanet.  In 2010 and 2012 the planet now dubbed Fomalhaut b or Dagon was observed again and it really does orbit Fomalhaut in a very eccentric orbit.

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


Fomalhaut b

The track of observations of Fomalhaut b or Dagon in 2004, 2006, 2010 and 2012. Credit: NASA and ESA.

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