The Gliese ID of the star is GL 317. The star was part of the original catalogue devised by German Astronomer Wilheim Gliese of stars located within 20 parsecs of Earth. Star Names
More details on objects' alternative names can be found at Star Names .
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 Gliese 317, the location is 08h 40m 59.24 and -23° 27` 23.3 .
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 794.00 milliarcseconds/year towards the north and -438.00 milliarcseconds/year east if we saw them in the horizon.
The Radial Velocity, that is the speed at which the star is moving away/towards the Sun is 87.72800 km/s . 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.
Based on the star's spectral type of M3.5V C , Gliese 317's colour and type is red main sequence star. Based on the star's spectral, the stars temperature is between 2,400.00 and 3,700.00 degrees kelvin.
Gliese 317 has an apparent magnitude of 11.98 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 11.06 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 65.30000 which gives a calculated distance to Gliese 317 of 49.95 light years from the Earth or 15.31 parsecs. It is about 293,637,337,390,521 miles from Earth.
The star is roughly 3,157,892.18 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.
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||43,657,831.37|
|Concorde (Mach 2)||1,534.54||21,828,887.24|
|New Horizons Probe||33,000||1,015,069.72|
|Speed of Light||670,616,629.00||49.95|
|Primary / Proper / Traditional Name||Gliese 317|
|Alternative Names||Gliese 317|
|Spectral Type||M3.5V C|
|Constellation's Main Star||No|
|Multiple Star System||No / Unknown|
|Star Type||Main Sequence Dwarf Star|
|Visual / Apparent Magnitude||11.98|
|Naked Eye Visible||Requires a 4.5 - 6 Inch Telescope - Magnitudes|
|Right Ascension (R.A.)||08h 40m 59.24|
|Declination (Dec.)||-23° 27` 23.3|
|Distance from Earth||65.30000 Parallax (milliarcseconds)|
|49.95 Light Years|
|3,157,892.18 Astronomical Units|
|Proper Motion Dec.||794.00000 milliarcseconds/year|
|Proper Motion RA.||-438.00000 milliarcseconds/year|
|Radial Velocity||87.72800 km/s|
|Calculated Temperature Range||2,400.00 - 3,700.00|
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