The Id of the star in the Henry Draper catalogue is HD239964.
More details on objects' alternative names can be found at Star Names .
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 239964, the location is 22 28 26.4407915435 and +58 06 49.301703513 .
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 -0.18 milliarcseconds/year towards the north and 10.25 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 9.38 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.
HD 239964 has a spectral type of M2. This means the star is a red star.
The Parallax of the star is given as 1.61 which gives a calculated distance to HD 239964 of 2031.79 light years from the Earth or 622.94 parsecs. It is about 11,944,132,246,980,706.64 miles from Earth.
The star is roughly 128,489,703.07 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.
A note about the calculations, when I'm talking about years, I'm talking non-leap years only (365 days).
If you were to drive there at about 120 m.p.h. in a car with an infinity engine so you didn't have to pull over for petrol, it would take you 99,534,435,391,505.89 hours or 11,362,378,469.35 years.
At the time of writing, the fastest probe so far created is the New Horizon probe which is travelling at a speed of 33,000 m.p.h. If the probe was travelling to HD 239964 then it would take 361,943,401,423.66 hours / 41,317,739.89 years to get there. Speed Ref: N.A.S.A.
It would to take a spaceship journey travelling at the speed of light, 2031.79 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.
|Primary / Proper / Traditional Name||HD 239964|
|Alternative Names||HD 239964|
|Constellation's Main Star||No|
|Multiple Star System||No / Unknown|
|Right Ascension (R.A.)||22 28 26.4407915435|
|Declination (Dec.)||+58 06 49.301703513|
|Distance from Earth||1.61 Parallax (milliarcseconds)|
|2031.79 Light Years|
|128,489,703.07 Astronomical Units|
|Proper Motion Dec.||-0.18 milliarcseconds/year|
|Proper Motion RA.||10.25 milliarcseconds/year|
|Radial Velocity||9.38 km/s|
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