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HD 218188

Primary Facts on HD 218188

HD 218188's Alternative Names

The Id of the star in the Henry Draper catalogue is HD218188.

More details on objects' alternative names can be found at Star Names .

Location of HD 218188

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 object is compared to the celestial equator and is expressed in degrees. For HD 218188, the location is 23 05 46.2961303854 and +22 52 12.785348784 .

Radial Velocity and Proper Motion of HD 218188

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 3.37 miliarcseconds/year towards the north and 28.60 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 -16.51 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 HD 218188

HD 218188 has a spectral type of K0 D~. This means the star is a orange to red star.

Distance to HD 218188

The Parallax of the star is given as 3.86 which gives a calculated distance to HD 218188 of 844.92 light years from the Earth or 259.05 parsecs. It would take a spaceship travelling at the speed of light, 844.92 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

The star is roughly 53,432,525.74 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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Additional HD 218188 Facts and Figures

Visual Facts


Primary / Proper / Traditional NameHD 218188
Alternative NamesHD 218188
Spectral TypeK0 D~
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeStar
Colour orange to red
GalaxyMilky Way
ConstellationPegasus
Right Ascension (R.A.)23 05 46.2961303854
Declination (Dec.)+22 52 12.785348784
Distance from Earth3.86 Parallax (milliarcseconds)
 844.92 Light Years
 259.05 Parsecs
 53,432,525.74 Astronomical Units
Proper Motion Dec.3.37 milliarcseconds/year
Proper Motion RA.28.60 milliarcseconds/year
Radial Velocity-16.51 km/s

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Sources and Links


Sourcehttp://simbad.u-strasbg.fr/simbad/sim-id?Ident=hd%20218188

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