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Posts Tagged ‘Piscis Austrinus’

11/24/2017 – Ephemeris – Fomalhaut, the loneliest star, has a little buddy

November 24, 2017 1 comment

Ephemeris for Friday, November 24th. The Sun will rise at 7:51. It’ll be up for 9 hours and 15 minutes, setting at 5:07. The Moon, 2 days before first quarter, will set at 10:30 this evening.

The lonely bright star low in the south 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, 15 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.

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

Addendum

Fomalhaut in the south at 8 p.m. on November 15, 2012. Created using Stellarium.

Fomalhaut in the south at 8 p.m. on November evenings. Created using Stellarium.

Fomalhaut b

Fomalhaut b and it’s path around its star. Credit: NASA, ESA, and P. Kalas (University of California, Berkeley and SETI Institute)

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

December 5, 2016 Comments off

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.

Addendum

Fomalhaut b

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

10/24/2016 – Ephemeris – Fomalhaut, the loneliest star in the sky

October 24, 2016 Comments off

Ephemeris for Monday, October 24th.  The Sun will rise at 8:10.  It’ll be up for 10 hours and 31 minutes, setting at 6:42.  The Moon, 2 days past last quarter, will rise at 3:01 tomorrow morning.

There’s a bright star that appears for only seven and a half hours on autumn evenings.  It’s appearance, low in the south at 10 p.m., is a clear indication of the autumn season.  The star’s name is Fomalhaut, which means fish’s mouth.  That’s fitting because it’s in the constellation of Piscis Austrinus, the southern fish.  At our latitude it’s kind of the fish that got away, because Fomalhaut appears to be quite alone low in the sky.  The dimness of the constellation’s other stars and location close to the horizon make the faint stars hard to spot. The earth’s thick atmosphere near the horizon reduces their brightness by a factor of two or more, so Fomalhaut, one of the brightest stars in the sky, keeps a lonely vigil in the south.

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

Addendum

Aquarius and Fomalhaut as visualized by Stellarium

Aquarius and Fomalhaut as visualized by Stellarium. 

10/05/2015 – Ephemeris – The loneliest star

October 5, 2015 Comments off

Ephemeris for Monday, October 5th.  The Sun will rise at 7:45.  It’ll be up for 11 hours and 31 minutes, setting at 7:16.   The Moon, 1 day past last quarter, will rise at 1:38 tomorrow morning.

There’s a bright and lonely star that appears low in the south for only seven and a half hours a night on autumn evenings.  It’s appearance is a sign as sure as the falling leaves that autumn is here  At 10 p.m. tonight it’s low in the south-southeast.  The star’s name is Fomalhaut, which means fish’s mouth.  This is appropriate because it’s in the constellation of Piscis Austrinus, the southern fish.  At our latitude it’s the fish that got away, because Fomalhaut appears to be quite alone.  The dimness of the constellation’s other stars and location close to the horizon make the fainter stars hard to spot.  The earth’s thick atmosphere near the horizon reduces the stars brightness by a factor of two or more, so Fomalhaut appears to keep a lonely vigil in the south.

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

Addendum

Fomalhaut

Fomalhaut appears quite alone in the south-southeast at about 10 p.m. Created using Stellarium.

Actually Fomalhaut isn’t all that alone,  It apparently has a companion planet.

Fomalhaut b

Fomalhaut b and it’s path around its star. Credit: NASA, ESA, and P. Kalas (University of California, Berkeley and SETI Institute)

10/14/2014 – Ephemeris – The loneliest star

October 14, 2014 Comments off

Ephemeris for Tuesday, October 14th.  The sun will rise at 7:56.  It’ll be up for 11 hours and 3 minutes, setting at 6:59.   The moon, 1 day before last quarter, will rise at 11:57 this evening.

There’s a bright star that appears for only seven and a half hours a night on autumn evenings.  It’s appearance, low in the south, is a clear indication of the autumn season.  At 9 p.m. tonight it’s low in the southeast.  The star’s name is Fomalhaut, which means fish’s mouth.  That fits because it’s in the constellation of Piscis Austrinus, the southern fish.  At our latitude it’s the fish that got away, because Fomalhaut appears to be the loneliest star in the sky.  The dimness of the constellation’s other stars and location close to the horizon make the fainter stars hard to spot.   They would be overhead in Australia.  The earth’s thick atmosphere near the horizon reduces the stars brightness by a factor of two or more.

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

Addendum

Fomalhaut

Fomalhaut appears quite alone in the south-southeast at 10 p.m. October 14, 2014. Created using Stellarium. Click on the image to enlarge.

10/17/2013 – Ephemeris – The lonely star

October 16, 2013 Comments off

Ephemeris for Thursday, October 17th.  The sun will rise at 8:00.  It’ll be up for 10 hours and 53 minutes, setting at 6:54.   The moon, 1 day before full, will set at 7:37 tomorrow morning.

There’s a bright star that appears for only seven and a half hours on autumn evenings.  It’s appearance, low in the southeast at 10 p.m., is a clear indication of the autumn season.  The star’s name is Fomalhaut, which means fish’s mouth.  That’s fitting because it’s in the constellation of Piscis Austrinus, the southern fish.  At our latitude it’s kind of the fish that got away, because Fomalhaut appears to be quite alone low in the sky.  The dimness of the constellation’s other stars and location close to the horizon make the faint stars hard to spot. The earth’s thick atmosphere near the horizon reduces their brightness by a factor of two or more, so Fomalhaut, one of the brightest stars in the sky, keeps a lonely vigil in the south.

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

Addendum

The bright star Fomalhaut all alone at 9 p.m.  Created using Stellarium.

The bright star Fomalhaut all alone at 9 p.m. Created using Stellarium.

10/04/2012 – Ephemeris – The lonely autumn star Fomalhaut

October 4, 2012 Comments off

Ephemeris for Thursday, October 4th.  The sun will rise at 7:44.  It’ll be up for 11 hours and 32 minutes, setting at 7:16.   The moon, 4 days before last quarter, will rise at 9:40 this evening.

There’s a bright star that appears for only seven and a half hours on autumn evenings.  It’s appearance, low in the southeast at 10 p.m., is a clear indication of the autumn season.  The star’s name is Fomalhaut, which means fish’s mouth.  That’s fitting because it’s in the constellation of Piscis Austrinus, the southern fish.  At our latitude it’s kind of the fish that got away, because Fomalhaut appears to be quite alone low in the sky.  The dimness of the constellation’s other stars and location close to the horizon make the faint stars hard to spot. The earth’s thick atmosphere near the horizon reduces their brightness by a factor of two or more, so Fomalhaut, one of the brightest stars in the sky, keeps a lonely vigil in the south.

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

Addendum

The bright star Fomalhaut all alone at 10 p.m. on October 4, 2012.  Created using Stellarium.

The bright star Fomalhaut all alone at 10 p.m. on October 4, 2012. Created using Stellarium.

Click image to enlarge.