HIP66190 is the reference name for the star in the Hipparcos Star Catalogue.
BD number is the number that the star was filed under in the Durchmusterung or Bonner Durchmusterung, a star catalogue that was put together by the Bonn Observatory between 1859 to 1903. The star's BD Number is BD+49 2226.
More details on star 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 star is compared to the celestial equator and is expressed in degrees. For HIP 66190, the location is 13h 33m 59.31 and +48° 46` 07.5 .
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 5.37 ± 0.91 miliarcseconds/year towards the north and -12.17 ± 1.20 miliarcseconds/year east if we saw them in the horizon. . 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.
The source of the information if it has a Hip I.D. is from Simbad, the Hipparcos data library based at the University at Strasbourg, France. Hipparcos was a E.S.A. satellite operation launched in 1989 for four years. The items in red are values that I've calculated so they could well be wrong. Information regarding Metallicity and/or Mass is from the E.U. Exoplanets. The information was obtained as of 12th Feb 2017.
|Primary / Proper / Traditional Name||HIP 66190|
|Alternative Names||HIP 66190, BD+49 2226|
|Constellation's Main Star||No|
|Multiple Star System||No / Unknown|
|Absolute Magnitude||1.79 / 0.52|
|Visual / Apparent Magnitude||10.31|
|Naked Eye Visible||Requires a 4.5 - 6 Inch Telescope - Magnitudes|
|Right Ascension (R.A.)||13h 33m 59.31|
|Declination (Dec.)||+48° 46` 07.5|
|Galactic Latitude||66.84 degrees|
|Galactic Longitude||104.91 degrees|
|1997 Distance from Earth||1.98 Parallax (milliarcseconds)|
|1647.29 Light Years|
|2007 Distance from Earth||1.10 Parallax (milliarcseconds)|
|2965.12 Light Years|
|187,511,966.11 Astronomical Units|
|Proper Motion Dec.||5.37 ± 0.91 milliarcseconds/year|
|Proper Motion RA.||-12.17 ± 1.20 milliarcseconds/year|
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