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Kelu-1

Kelu-1 is a brown Dwarf Star that can be located in the constellation of Hydra. The description is based on the spectral class. Kelu-1 is not part of the constellation but is within the borders of the constellation.

Location of Kelu-1

The location of the 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 star is compared to the celestial equator and is expressed in degrees. For Kelu-1, the location is 13h 05m 40.196 and -25° 41` 05.99 .

Radial Velocity and Proper Motion of Kelu-1

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 -30.00 miliarcseconds/year towards the north and -284.00 miliarcseconds/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 6.37 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 (Colour) of Kelu-1

Kelu-1 has a spectral type of L2+L3.5 C. This means the star is a brown Dwarf Star.

Distance to Kelu-1

The Parallax of the star is given as 53.60 which gives a calculated distance to Kelu-1 of 60.85 light years from the Earth or 18.66 parsecs. It would take a spaceship travelling at the speed of light, 60.85 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

The star is roughly 3,848,874.47 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.

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Kelu-1 Facts

Visual Facts


Primary / Proper / Traditional NameKelu-1
Spectral TypeL2+L3.5 C
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeDwarf Star
Colour brown
GalaxyMilky Way
ConstellationHydra
Right Ascension (R.A.)13h 05m 40.196
Declination (Dec.)-25° 41` 05.99
Distance from Earth53.60 Parallax (milliarcseconds)
 60.85 Light Years
 18.66 Parsecs
 3,848,874.47 Astronomical Units
Proper Motion Dec.-30.00 milliarcseconds/year
Proper Motion RA.-284.00 milliarcseconds/year
Radial Velocity6.37 km/s

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Sources and Links


Sourcehttp://simbad.u-strasbg.fr/simbad/sim-id?Ident=Kelu-1

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