Luminosity is the amount of energy that a star pumps out and its relative to the amount that our star, the Sun gives out. ![]() 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 Temperatureīased 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. 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. Yed Posterior Physical Properties Yed Posterior Colourīased on the star's spectral type of G9.5 IIIb, Yed Posterior'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. 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 towards the Sun is -10.10000 km/s with an error of about 0.90 km/s. The star is moving 40.58 ± 0.13 milliarcseconds/year towards the north and 83.4 ± 0.2 milliarcseconds/year east if we saw them in the horizon. ![]() Proper Motion details the movements of these stars and are measured in milliarcseconds. 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. Roughly, change the distance from light years to years, that 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. ![]() 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. 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. In case you're wondering, 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 is located in the Milky Way galaxy, this is the galaxy that you reside in. The star can be seen with the naked eye, that is, you don't need a telescope/binoculars to see it. It is a main star in the constellation Ophiuchus and makes up the constellation outline. 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. Based on the spectral type (G9.5 IIIb) of the star, the Yed Posterior colour is yellow. ![]() Yed Posterior is a Giant Star that is located in the constellation of Ophiuchus. A YED smaller than zero tends to be the case for inferior goods. In other words, consumers demand less of this product when income increases. This means that an increase in income will result in a proportionally larger decrease in the quantity demanded. YED <0: If YED is smaller than zero, it implies a negative elasticity of demand. A YED larger than 1 tends to be the case for luxury goods - as average income increases, consumers tend to spend more on luxuries like designer clothes, expensive jewellery, or luxury holidays. This means that a change in income will result in a proportionally larger change in quantity demanded. There are three different expected outcomes:Ġ 1: If YED is much higher than one, it implies income elastic demand. Similarly to PED, we need to understand how to interpret the value of YED. Market Segmentation Targeting and Positioning.
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