Universe Guide

Gliese 317

Gliese 317 Facts

  • Gliese 317 is a main sequence star that can be located in the constellation of Pyxis. The description is based on the spectral class.
  • Gliese 317 is not part of the constellation outline but is within the borders of the constellation.
  • Based on the spectral type (M3.5V C) of the star, the star's colour is red .
  • The star can not be seen by the naked eye, you need a telescope to see it.
  • The star is calculated at being about 49.95 light years away from us. Distance

Gliese 317's Alternative Names

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 .

Location of Gliese 317

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 .

Radial Velocity and Proper Motion of Gliese 317

Proper Motion

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.

Radial Velocity

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.

Physical Properties of Gliese 317

Gliese 317 Temperature and Colour

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 Radius

Gliese 317 Apparent and Absolute Magnitudes

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.

Distance to Gliese 317

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.

Travel Time to Gliese 317

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.

DescriptionSpeed (m.p.h.)Time (years)
Airbus A38073645,512,636.71
Speed of Sound (Mach 1)767.26943,657,831.37
Concorde (Mach 2)1,534.5421,828,887.24
New Horizons Probe33,0001,015,069.72
Speed of Light670,616,629.0049.95

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Additional Gliese 317 Facts and Figures

Visual Facts

Primary / Proper / Traditional NameGliese 317
Alternative NamesGliese 317
Spectral TypeM3.5V C
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star Type Main Sequence Dwarf Star
GalaxyMilky Way
Visual / Apparent Magnitude11.98
Naked Eye VisibleRequires a 4.5 - 6 Inch Telescope - Magnitudes
Right Ascension (R.A.)08h 40m 59.24
Declination (Dec.)-23° 27` 23.3
Distance from Earth65.30000 Parallax (milliarcseconds)
 49.95 Light Years
 15.31 Parsecs
 3,157,892.18 Astronomical Units
Proper Motion Dec.794.00000 milliarcseconds/year
Proper Motion RA.-438.00000 milliarcseconds/year
Radial Velocity87.72800 km/s

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Estimated Calculated Facts

Calculated Temperature Range2,400.00 - 3,700.00

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Comments and Questions

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