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Epsilon Fornacis, HD18907, HIP14086, HR914

Epsilon Fornacis is a white to yellow main sequence dwarf star that can be located in the constellation of Fornax. The star can be seen with the naked eye, that is, you don't need a telescope/binoculars to see it.

Epsilon Fornacis's Alternative Names

Epsilon Fornacis is the Bayer Classification for the star. The Id of the star in the Yale Bright Star Catalogue is HR914. HIP14086 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD18907.

More details on star alternative names can be found at Star Names.

Location of Epsilon Fornacis

The location of the star in the galaxy is determined by the Right Ascension (R.A.) and Declination (Dec.), these are equivalent to the Longitude and Latitude on the Earth. The Right Ascension is how far expressed in time (hh:mm:ss) the star is along the celestial equator. If the R.A. is positive then its eastwards. The Declination is how far north or south the star is compared to the celestial equator and is expressed in degrees. For Epsilon Fornacis, the location is 03h 01m 37.45 and -28° 05` 25.7 .

Proper Motion of Epsilon Fornacis

All stars like planets orbit round a central spot, in the case of planets, its the central star such as the Sun. In the case of a star, its the galactic centre. The constellations that we see today will be different than they were 50,000 years ago or 50,000 years from now. Proper Motion details the movements of these stars and are measured in milliarcseconds. The star is moving -441.16 ± 0.24 miliarcseconds/year towards the north and 282.18 ± 0.36 miliarcseconds/year east if we saw them in the horizon. The Radial Velocity, that is the speed at which the star is moving away/towards us is 42.59000 km/s with an error of about 0.09 km/s .

Epsilon Fornacis Luminosity

Luminosity is the amount of energy that a star pumps out and its relative to the amount that our star, the Sun gives out. The figure of 4.7000000 that I have given is based on the value in the Simbad Hipparcos Extended Catalogue at the University of Strasbourg from 2012.

Physical Properties (Colour, Temperature) of Epsilon Fornacis

Epsilon Fornacis has a spectral type of G8/K0V. This means the star is a white to yellow main sequence dwarf star. The star is 7411.00000000 Parsecs from the Galactic Centre or terms of Light Years is 24171.9654238400000000s. The star has a B-V Colour Index of 0.79 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 5,311 Kelvin.

Epsilon Fornacis Radius has been calculated as being 2.23 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 1,552,391.16.km. However with the 2007 release of updated Hipparcos files, the radius is now calculated at being round 2.37. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures. The star's Iron Abundance is -0.57 with an error value of 0.01 Fe/H with the Sun has a value of 1 to put it into context.

Epsilon Fornacis Apparent and Absolute Magnitudes

Epsilon Fornacis has an apparent magnitude of 5.88 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. If you used the 1997 Parallax value, you would get an absolute magnitude of 3.47 If you used the 2007 Parallax value, you would get an absolute magnitude of 3.34. Magnitude, whether it be apparent/visual or absolute magnitude is measured by a number, the smaller the number, the brighter the Star is. Our own Sun is the brightest star and therefore has the lowest of all magnitudes, -26.74. A faint star will have a high number.

Distance to Epsilon Fornacis

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 32.94 which gave the calculated distance to Epsilon Fornacis as 99.02 light years away from Earth or 30.36 parsecs. It would take a spaceship travelling at the speed of light, 99.02 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

In 2007, Hipparcos data was revised with a new parallax of 31.06 which put Epsilon Fornacis at a distance of 105.01 light years or 32.20 parsecs. It should not be taken as though the star is moving closer or further away from us. It is purely that the distance was recalculated.

The star's Galacto-Centric Distance is 7,411.00 Parsecs or 24,171.97 Light Years. The Galacto-Centric Distance is the distance from the star to the Centre of the Galaxy which is Sagittarius A*.

Source of Information

The source of the information if it has a Hip I.D. is from Simbad, the Hipparcos data library based at the University at Strasbourg, France. Hipparcos was a E.S.A. satellite operation launched in 1989 for four years. The items in red are values that I've calculated so they could well be wrong. Information regarding Metallicity and/or Mass is from the E.U. Exoplanets. The information was obtained as of 12th Feb 2017.

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Epsilon Fornacis Facts

Visual Facts

Alternative NamesHD 18907, HIP 14086, HR 914
Star Type main sequence Dwarf Star
GalaxyMilky Way
Absolute Magnitude3.47 / 3.34
Visual / Apparent Magnitude5.88
Naked Eye VisibleYes - Magnitudes
Right Ascension (R.A.)03h 01m 37.45
Declination (Dec.)-28° 05` 25.7
Galactic Latitude-61.23 degrees
Galactic Longitude222.50 degrees
1997 Distance from Earth32.94 Parallax (milliarcseconds)
 99.02 Light Years
 30.36 Parsecs
2007 Revised Distance from Earth31.06 Parallax (milliarcseconds)
 105.01 Light Years
 32.20 Parsecs
Galacto-Centric Distance24,171.97 Light Years / 7,411.00 Parsecs
Proper Motion Dec.-441.16 ± 0.24 milliarcseconds/year
Proper Motion RA.282.18 ± 0.36 milliarcseconds/year
B-V Index0.79
Radial Velocity42.59 ± 0.09 km/s
Iron Abundance-0.57 ± 0.01 Fe/H
Semi-Major Axis3897.00
Stellar Luminosity (Lsun)4.70
Spectral TypeG8/K0V
Colour(G) White to Yellow

Estimated Facts

Calculated Effective Temperature5,311 Kelvin

Sources and Links

SIMBAD SourceLink

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