Chi1 Fornacis is a blue subgiant star that can be located in the constellation of Fornax. Chi1 Fornacis is the Bayer Classification for the star. HIP15987 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD21423.
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 Chi1 Fornacis, the location is 03h 25m 55.82 and -35d55`15.1 .
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 -004.38 ± 000.34 towards the north and 036.30 ± 000.42 east if we saw them in the horizon.
Chi1 Fornacis has a spectral type of A1IV. This means the star is a blue subgiant star. The star has a B-V Colour Index of 0.08 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 8,626 Kelvin.
Chi1 Fornacis has been calculated as 2.20 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 1,533,752.47.km.
The star has companion stars which are in orbit close by, it has at least the following companions in close orbit, Chi2 Fornacis, Chi3 Fornacis.
Chi1 Fornacis has an apparent magnitude of 6.39 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 1.39 If you used the 2007 Parallax value, you would get an absolute magnitude of 1.23. 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.
Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 10.01 which gave the calculated distance to Chi1 Fornacis as 325.84 light years away from Earth or 99.90 parsecs. It would take a spaceship travelling at the speed of light, 325.84 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 9.27 which put Chi1 Fornacis at a distance of 351.85 light years or 107.87 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.
|Bayer Designation||Chi1 Fornacis|
|Hipparcos Library I.D.||15987|
|Henry Draper Designation||21423|
|Star Type||subgiant star|
|Absolute Magnitude||1.39 / 1.23|
|Right Ascension (R.A.)||03h 25m 55.82|
|1997 Distance from Earth||10.01 Parallax (milliarcseconds)|
|325.84 Light Years|
|2007 Revised Distance from Earth||9.27 Parallax (milliarcseconds)|
|351.85 Light Years|
|Proper Motion Dec.||-4.38 ± 0.34 milliarcseconds/year|
|Proper Motion RA.||36.30 ± 0.42 milliarcseconds/year|
|Companion Stars||Chi2 Fornacis|
|Radius (x the Sun)||2.20|
|Calculated Effective Temperature||8,626 Kelvin|