More details on objects' alternative names can be found at. The star can be seen with the naked eye, that is, you don't need a telescope/binoculars to see it. It is visible to the naked eye with an apparent visual magnitude of 3.568. is from Simbad, the Hipparcos data library based at the University at Strasbourg, France. Luminosity is the amount of energy that a star pumps out and its relative to the amount that our star, the Sun gives out. Based on the star's spectral type of G8III , Al Kirkab's colour and type is yellow giant star. Its nothing to fear as the stars are so far apart, they won't collide in our life-time, if ever. More information can be found on my dedicated multiple star systems page. Comments may be merged or altered slightly such as if an email address is given in the main body of the comment. The star is moving -54.57 ± 0.11 milliarcseconds/year towards the north and -23.39 ± 0.22 milliarcseconds/year east if we saw them in the horizon. Hipparcos was a E.S.A. Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 22.73000 which gave the calculated distance to Al Kirkab as 143.49 light years away from Earth or 43.99 parsecs. Su temperatura efectiva es de 4990 K y brilla con una luminosidad 74 veces mayor que la del Sol. Con una masa de 2,7 masas solares, tiene una edad aproximada de 500 millones de años. The location of the giant star in the night sky is determined by the Right Ascension (R.A.) and Declination (Dec.), these are equivalent to the Longitude and Latitude on the Earth. En los últimos 200 años la separación visual entre ambas estrellas apenas ha variado 2,5 segundos de arco, lo que sugiere que se trata de un verdadero sistema binario, si bien con un largo período orbital que supera los 3000 años. [3]​, El sistema se encuentra a 141 años luz del Sistema Solar. The file is dated 2000 so any differences between this and any other source will be down to the actual source from where the information came from. The time it will take to travel to this star is dependent on how fast you are going. Su diámetro es 11,5 veces más grande que el diámetro solar y su velocidad de rotación proyectada es de 5 km/s, dando lugar a un período de rotación que puede durar hasta 115 días. La componente principal, Kappa Geminorum A, es una gigante amarilla de tipo espectral G8III y magnitud aparente +3,57. The two letters at the start identify that the star is a variable star. The items in red are values that I've calculated so they could well be wrong. If you want that in miles, it is about 843,523,954,798,116.20, based on 1 Ly = 5,878,625,373,183.61 miles. Based on the spectral type, we can deduce that the surface temperature of the star is in the order of between between 5,000 and 6,000K based on the notes from Harvard University. The stars may be of equal mass, unequal mass where one star is stronger than the other or be in groups orbiting a central point which doesn't necessarily have to be a star. Al Kirkab (Kappa Geminorum) is a white to yellow giant star that can be located in the constellation of Gemini. An Astronomical Unit is the distance between Earth and the Sun. satellite operation launched in 1989 for four years. Our own Sun is the brightest star and therefore has the lowest of all magnitudes, -26.74. κ Geminorum (kappa Geminorum) κ Geminorum is a double giant star in the constellation of Gemini. The Radial Velocity, that is the speed at which the star is moving away/towards the Sun is 20.15000 km/s with an error of about 0.21 km/s . The number of A.U. The letters are allocated as the next in the list up e.g. has done some calculations as to how long it will take going at differing speeds. Al Kirkab has an apparent magnitude of 3.57 which is how bright we see the star from Earth. If the R.A. is positive then its eastwards. La componente principal, Kappa Geminorum A, es una gigante amarilla de tipo espectral G8III y magnitud aparente +3,57. The constellations that we see today will be different than they were 50,000 years ago or 50,000 years from now.

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