The brightest star in the constellation Draco. Its name comes from the Arabic for "the serpent" and stands for the whole constellation. Eltanin's high northerly position takes it nearly through the zenith as seen from London, causing it to be known formerly as the zenith star and to be heavily studied. While attempting to measure its parallax - the annual shift in stellar position caused by the changing position of the orbiting Earth (from which we get stellar distance) - James Bradley, in 1728, discovered the aberration of starlight, which is caused by the velocity of the moving Earth relative to the speed of the light coming from the star. This discovery proved, once and for all, that Copernicus was right and that Earth truly does move around the Sun.
Eltanin is moving toward us, and will make a closest pass of 28 light-years about 1.5 million years from now, when it will be the brightest star in the sky and will rival our current Sirius. Physically, Eltanin is an orange giant K star, a bit over half the size of Mercury's orbit.
visual magnitude
2.24
absolute magnitude
-1.04
spectral type
K5III
surface temperature
4,000K
luminosity
600 Lsun
radius
50 Rsun
mass
1.7 Msun
distance
148 ± 3 light-years (45.2 ± 0.9 pc)
position
R.A. 17h 56m 36.4s,
Dec. +51° 29' 20.3"
other designations
Etamin, Etanin, Ettanin,
Rastaban, Rasaben, 33 Draconis,
HR 6705, BD +51°2282, HD 164058,
SAO 30653, FK5 676, HIP 87833.
Surface Temperature: 4000 K
3,930 degrees kelvin. one of the coolest/coldest stars in the constellation
Eltanin is an orange giant of spectral type K5
Neither - Eltanin is a K type star
Gamma Draconis (Eltanin and Etamin) is a star in the constellation Draco.It is an orange giant of spectral type K5
Gamma Draconis (Eltanin) is a star in the constellation Draco.It has an apparent magnitude of +2.24It has an absolute magnitude of -1.04
This is not a letter. It's not an English word, either. I think you should check your spelling or ask someone what word they said that you thought was spelled "eltanin."
Surface temperature is the temperature on the outside of the object. For example the surface temperature of the Earth is the Ground temperature and the surface temperature of an orange is the rind not the pips.
It's a giant red star.
what is the sirius surface temperature
Why do they have different surface temperature
Surface temperature? Saturn probably doesn't HAVE a "surface".