Draco is home to several double stars and binary stars. Its name comes from the Arabic for "the serpent" and stands for the whole constellation. An Astronomical Unit is the distance between Earth and the Sun. Draco is a constellation and thus made up of many stars with different distances.
– Etamin (Gamma Draconis), the constellation’s brightest star, is an orange giant situated 154 light years distant with a visual magnitude of 2.36. Beta Draconis, traditionally called Rastaban, is a yellow giant star of magnitude 2.8, 362 light-years from Earth. The said star is Gamma Draconis, and the observations are made in London.
Rastaban – β Draconis (Beta Draconis) The Beta Dranconis is the third brightest star in the constellation. Distance: 100 (ly) Visual brightness: 2.23 (mag) Spectral type: K5III : Eltanin became famous when in 1728, James Bradley discovered the aberration of light, due to Earth's motion and the finite velocity of light, from observations of this star. The star's Galacto-Centric Distance is 7,397.00 Parsecs or 24,126.30 Light Years. It is also referred to as the Zenith star because it lies almost directly overhead as seen from London. Using the 2007 distance, the star is roughly 9,756,257.35 Astronomical Units from the Earth/Sun give or take a few. Using the 2007 distance, the star is roughly 6,239,466.91 Astronomical Units from the Earth/Sun give or take a few. I am reading Roobert Hooke's paper An attempt to prove the motion of the earth from observations (1674, faksimile). The brighter of the three, and the brightest star in Draco, is Gamma Draconis, traditionally called Etamin or Eltanin. The number of A.U. Cosmological Distance Ladder Objects: Introduction: Step 1 : the Earth: Step 2 : the Solar System: Step 3 : nearby stars - 61 Cygni - Star - Gamma Draconis - Star: Step 4 : more distant stars: Step 5 : the Galaxy: Step 6 : the Local Group: Step 7 : more distant galaxies: Step 8 : the Universe - 3C 273 - Quasar

It is an orange giant star of magnitude 2.2, 148 light-years from Earth. Its name shares a meaning with Thuban, "head of the serpent". Its name comes from the Arabic for "the serpent" and stands for the whole constellation. It is about 380 light years away and is 40 times the radius of the Sun.

An Astronomical Unit is the distance between Earth and the Sun. However, the distance of Draco III means that that it can avoid the worst of it. The brightest is Gamma Draconis (γ Dra / γ Draconis) It has the traditional name Eltanin (also Etamin). The principal dayes of doing which will be about the 4 of April, when our Zenith passeth by the said Star at midnight. The problem facing him was how to explain this phenomenon. Gamma Draconis exudes far more light than Sol, being 471 times as bright as Sol, meaning that closer planets, such as Draco I and Draco Prime are bathed in extreme levels of light. Etamin is 72% more massive than the Beta Draconis (β Draconis, abbreviated Beta Dra, β Dra) is a binary star and the third-brightest star in the northern circumpolar constellation of Draco.With an apparent visual magnitude of 2.79, it is bright enough to be easily seen with the naked eye. The aberration of starlight was discovered in 1728 when James Bradley observed Gamma Draconis.