Everyone knows that Clark Kent came from a planet called Krypton which no longer exists. In collaboration with respected astronomer Neil deGrasse Tyson, Action Comics has revealed that Krypton orbited the star LHS 2520.
Its not a well known star and you're not going to be able to see unaided. Part of the reason it was chosen was that the mascot of Superman's high school was the Smallville Crows and Corvus is the constellation of the Crow.
The location of the main sequence 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 LHS 2520, the location is 12h 10m 05.597 and -15° 04` 15.66 .
All stars like planets orbit round a central spot, in the case of planets, its the central star such as the Sun. In the case of a star, its the galactic centre. The constellations that we see today will be different than they were 50,000 years ago or 50,000 years from now. Proper Motion details the movements of these stars and are measured in milliarcseconds. The star is moving -710.00 milliarcseconds/year towards the north and -65.00 milliarcseconds/year east if we saw them in the horizon. . 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. Its nothing to fear as the stars are so far apart, they won't collide in our life-time, if ever.
LHS 2520 has a spectral type of M3.5V E. This means the star is a red main sequence star.
LHS 2520 has an apparent magnitude of 12.12 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 11.58 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.
The Parallax of the star is given as 77.93 which gives a calculated distance to LHS 2520 of 41.85 light years from the Earth or 12.83 parsecs. It would take a spaceship travelling at the speed of light, 41.85 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.
The star is roughly 2,646,359.02 Astronomical Units from the Earth/Sun give or take a few. An Astronomical Unit is the distance between Earth and the Sun. The number of A.U. is the number of times that the star is from the Earth compared to the Sun.
|Primary / Proper / Traditional Name||LHS 2520|
|Spectral Type||M3.5V E|
|Constellation's Main Star||No|
|Multiple Star System||No / Unknown|
|Star Type||Main Sequence Dwarf Star|
|Visual / Apparent Magnitude||12.12|
|Naked Eye Visible||Requires a 4.5 - 6 Inch Telescope - Magnitudes|
|Right Ascension (R.A.)||12h 10m 05.597|
|Declination (Dec.)||-15° 04` 15.66|
|Distance from Earth||77.93 Parallax (milliarcseconds)|
|41.85 Light Years|
|2,646,359.02 Astronomical Units|
|Proper Motion Dec.||-710.00 milliarcseconds/year|
|Proper Motion RA.||-65.00 milliarcseconds/year|
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