The location of the Cool Methane Dwarf 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 WISE 1217+16 A, the location is 12h 17m 57.00 and 16° 26` 40.00 .
WISE 1217+16 A has a spectral type of T8.5. This means the star is a brown Cool Methane Dwarf Star.
WISE 1217+16 A has been calculated as 0.09 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 63,317.80.km. If you need the diameter of the star, you just need to multiple the radius by 2.
The star is believed to be about 6.00 Billion years old. To put in context, the Sun is believed to be about five billion years old and the Universe is about 13.8 billion years old.
WISE 1217+16 A has an apparent magnitude of 19.00 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 19.0 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 100.00 which gives a calculated distance to WISE 1217+16 A of 32.62 light years from the Earth or 10 parsecs. It would take a spaceship travelling at the speed of light, 32.62 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.
The star is roughly 2,062,633.69 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||WISE 1217+16 A|
|Constellation's Main Star||No|
|Multiple Star System||No / Unknown|
|Star Type||Cool Methane Dwarf Star|
|Age||6.00 Billion Years Old|
|Visual / Apparent Magnitude||19.00|
|Naked Eye Visible||Requires 8m Telescope - Magnitudes|
|Right Ascension (R.A.)||12h 17m 57.00|
|Declination (Dec.)||16° 26` 40.00|
|Distance from Earth||100.00 Parallax (milliarcseconds)|
|32.62 Light Years|
|2,062,633.69 Astronomical Units|
|Radius (x the Sun)||0.09|
|Name||Status||Mass (Jupiters)||Orbital Period (Days)||Eccentricity||Discovered||Semi-Major Axis||Periastron|
|WISE 1217+16 A b||Confirmed||2.0||47400.000||2012||7.6|
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