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+25 2497.
More details on objects' alternative names can be found at Star Names .
The location of the giant 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 NGP 25 55, the location is 12h 22m 04.9211 and +25° 06` 20.234 .
NGP 25 55 has a spectral type of G6III. This means the star is a white to yellow giant star.
The Parallax of the star is given as 1.24 which gives a calculated distance to NGP 25 55 of 2630.35 light years from the Earth or 806.45 parsecs. It would take a spaceship travelling at the speed of light, 2630.35 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.
The star is roughly 166,341,093.92 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||NGP 25 55|
|Alternative Names||BD+25 2497|
|Constellation's Main Star||No|
|Multiple Star System||No / Unknown|
|Star Type||Giant Star|
|Colour||White to Yellow|
|Right Ascension (R.A.)||12h 22m 04.9211|
|Declination (Dec.)||+25° 06` 20.234|
|Distance from Earth||1.24 Parallax (milliarcseconds)|
|2630.35 Light Years|
|166,341,093.92 Astronomical Units|
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