AH Scorpii is one of the largest known stars in the Milky Way but the title of the largest star goes to UY Scuti. However just because its not the biggest star, we shouldn't underplay just how big AH Scorpii is. The star is about 1,411 times the size of our Sun. Wiki
HIP84071 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD155161.
AH Scorpii has alternative name(s) :- , AH Sco.
More details on objects' alternative names can be found at Star Names .
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 Right Ascension is how far expressed in time (hh:mm:ss) the star is along the celestial equator. If the R.A. is positive then its eastwards. The Declination is how far north or south the object is compared to the celestial equator and is expressed in degrees. For AH Scorpii, the location is 17h 11m 17.02 and -32° 19` 30.7 .
Based on the star's spectral type of M4III: , AH Scorpii's colour and type is red giant star. The star has a B-V Colour Index of 2.39 which means the star's temperature is about 0 Kelvin. The temperature was calculated using information from Morgans @ Uni.edu.
AH Scorpii Radius has been calculated as being 1,411.00 times bigger than the Sun. The Sun's radius is 695,800km, therefore the star's radius is an estimated 981,773,800.00.km. If you need the diameter of the star, you just need to multiple the radius by 2.
AH Scorpii has an apparent magnitude of 7.06 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. Using the supplied Parallax value, you would get an absolute magnitude of -1.75 Magnitude, whether it be apparent/visual or absolute magnitude is measured by a number, the smaller the number, the brighter the Star is. Our own Sun is the brightest star and therefore has the lowest of all magnitudes, -26.74. A faint star will have a high number.
Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 1.73380 which gave the calculated distance to AH Scorpii as 1881.21 light years away from Earth or 576.77 parsecs. If you want that in miles, it is about 11,058,928,838,286,738.97, based on 1 Ly = 5,878,625,373,183.61 miles.
The time it will take to travel to this star is dependent on how fast you are going. U.G. has done some calculations as to how long it will take going at differing speeds. A note about the calculations, when I'm talking about years, I'm talking non-leap years only (365 days).
The New Horizons space probe is the fastest probe that we've sent into space at the time of writing. Its primary mission was to visit Pluto which at the time of launch (2006), Pluto was still a planet.
|Description||Speed (m.p.h.)||Time (years)|
|Speed of Sound (Mach 1)||767.269||1,644,235,214.30|
|Concorde (Mach 2)||1,534.54||822,116,535.67|
|New Horizons Probe||33,000||38,229,415.41|
|Speed of Light||670,616,629.00||1,881.21|
The star is a pulsating Semiregular late- (M variable type which means that its size changes over time. The Variable Type is usually named after the first star of that type to be spotted. AH Scorpii brightness ranges from a magnitude of 7.449 to a magnitude of 6.646 over its variable period. The smaller the magnitude, the brighter the star. Its variable/pulsating period lasts for 0.6 days (variability).
The source of the information if it has a Hip I.D. is from Simbad, the Hipparcos data library based at the University at Strasbourg, France. Hipparcos was a E.S.A. satellite operation launched in 1989 for four years. The items in red are values that I've calculated so they could well be wrong. Information regarding Metallicity and/or Mass is from the E.U. Exoplanets. The information was obtained as of 12th Feb 2017.
|Primary / Proper / Traditional Name||AH Scorpii|
|Alternative Names||HD 155161, HIP 84071, AH Sco|
|Constellation's Main Star||No|
|Multiple Star System||No / Unknown|
|Star Type||Giant Star|
|Visual / Apparent Magnitude||7.06|
|Naked Eye Visible||Requires a 7x50 Binoculars - Magnitudes|
|Right Ascension (R.A.)||17h 11m 17.02|
|Declination (Dec.)||-32° 19` 30.7|
|Galactic Latitude||4.27071439 degrees|
|Galactic Longitude||353.08380098 degrees|
|Distance from Earth||1.73380 Parallax (milliarcseconds)|
|1881.21 Light Years|
|118,966,523.33 Astronomical Units|
|Radial Velocity||-13.40000 ± 2.40 km/s|
|Variable Star Class||Pulsating|
|Variable Star Type||Semiregular late- (M|
|Mean Variability Period in Days||0.575|
|Variable Magnitude Range (Brighter - Dimmer)||6.646 - 7.449|
|Radius (x the Sun)||1,411.00 (1,287.00 - 1,535.00)|
|Calculated Temperature Range||2,400.00 - 3,700.00|
The map was generated using Night Vision, an awesome free application by Brian Simpson.
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