Yed Posterior Iron Abundance is -0.11 with an error value of 0.02 Fe/H with the Sun has a value of 1 to put it into context. It has been known to produce widely incorrect figures. The figure is derived at by using the formula from SDSS rather than peer reviewed papers. However with the 2007 release of updated Hipparcos files, the radius is now calculated at being round 9.46. If you need the diameter of the star, you just need to multiple the radius by 2. The Sun's radius is 695,800km, therefore the star's radius is an estimated 6,640,739.17.km. Yed Posterior estimated radius has been calculated as being 9.54 times bigger than the Sun. The figure of 63.71 that I have given isīased on the value in the Simbad Hipparcos Extended Catalogue at the University of Strasbourg from 2012. Luminosity is the amount of energy that a star pumps out and its relative to the amount that our star, the Sun gives out. Small stars are more energy efficient than larger stars and live longer. There is no relationship between colour and size, a red star can be both the largest and the smallest stars in the Universe. These stars are found mainly in Star Clusters. An example of when its a Blue Straggler, the star has stolen matter from a nearby star and grown to appear youthful when its not.

Those that are blue stars are normally identified as being young stars whereas redder stars are usually older stars, ones that are at the end of their life. There is a relationship between colour and temperature, stars that are closer to red in the rainbow spectrum are cooler whereas those closer to blue are hotter. To put this in context, the temperature of our Sun is about 5,778 Kelvin as said by Google. , Yed Posterior's colour and type is yellow giant star.īased on the spectral type as we don't have the exact temperature', we can deduce that the surface temperature of the star is in the order of 5,000 and 6,000K based on the notes from Harvard University. Yed Posterior Physical Properties Yed Posterior Colourīased on the star's spectral type of G9.5 IIIb Its nothing to fear as the stars are so far apart, they won't collide in our life-time, if ever. When the value is negative then the star and the Sun are getting closer to one another, likewise, a positive number means that two stars are moving away. The Radial Velocity, that is the speed at which the star is moving away/towards the Sun is -10.10000 km/s Milliarcseconds/year east if we saw them in the horizon. Milliarcseconds/year towards the north and 83.40 Proper Motion details the movements of these stars and are The constellations that we see today will be different than they were 50,000 years ago or 50,000 years from now. In the case of a star, its the galactic centre. Yed Posterior Radial Velocity and Proper Motion Yed Posterior Proper MotionĪll stars like planets orbit round a central spot, in the case of planets, its the central star such as the Sun. The Declination is how far north or south the object is compared to the celestial equator and is expressed in degrees. The Right Ascension is how far expressed in time (hh:mm:ss) the star is along the celestial equator. 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. The star's name is a traditional/name which has been officially recognised by the I.A.U.Using the most recent figures given by the 2007 Hipparcos data, Yed Posterior distance from Earth is 106.45 light years.Yed Posterior is a Binary or Multiple star system.The star can be seen with the naked eye, that is, you don't need a telescope/binoculars to see it.Based on the spectral type (G9.5 IIIb) of the star, the Yed Posterior colour is yellow.Yed Posterior is a main star in the constellation Ophiuchus and makes up the constellation outline.

No one has visited Yed Posterior and we have no probes on a rendezvous with the star.

There are no known exoplanets in orbit round the star, there might or might not be any but due to their size compared to the star, they'll be very hard to spot compared to other smaller stars hence why none have been spotted around a supergiant.

Roughly, change the distance from light years to years will tell you how long ago we are looking at the star. When you look at Yed Posterior, you are in fact looking back in time, you are seeing how it looks years ago.

Yed Posterior is not located within the Solar System, there is only one star in the Solar System and that is the Sun.

Yed Posterior can be located in the Milky Way galaxy, this is the galaxy that you reside in.

Normally, the brightest star in the constellation is classified as Alpha.

Yed Posterior is the traditional/proper name for the star whilst Epsilon Ophiuchi is the Bayer classification for the star.

Yed formula