is the brightest star in Carina based on the Hipparcos 2007 apparent magnitude. The star can be seen with the naked eye, that is, you don't need a telescope/binoculars to see it.
Eta Carinae is the Bayer Classification for the star. The Id of the star in the Yale Bright Star Catalogue is HR4210.
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 , the location is 10h 45m 03.59 and -59 d 41 ` 04.26 .
has a spectral type of LBV. This means the star is a main sequence dwarf star. The star has a B-V Colour Index of 0.61 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 5,859 Kelvin.
has been calculated as 60.00 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 41,748,000.00.km.
has an apparent magnitude of 1.00 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. 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.
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.
|Bayer Designation||Eta Carinae|
|Yale Bright Star Catalogue (HR) Id||4210|
|Star Type||main sequence dwarf star|
|Visual / Apparent Magnitude||1.00|
|Naked Eye Visible||Yes - Magnitudes|
|Right Ascension (R.A.)||10h 45m 03.59|
|Declination (Dec.)||-59 d 41 ` 04.26|
|Radius (x the Sun)||60.00|