HIP66284 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+39 2659.
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 66284, the location is 13h 35m 07.41 and +38° 18` 21.9 .
HIP 66284 has a spectral type of K2. This means the star is a orange to red star. The star has a B-V Colour Index of 1.28 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 4,422 Kelvin.
HIP 66284 Radius has been calculated as being 20.69 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 14,393,153.26.km. If you need the diameter of the star, you just need to multiple the radius by 2. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures.
HIP 66284 has an apparent magnitude of 9.66 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. Using the supplied Parallax value, you would get an absolute magnitude of -0.57 Magnitude, whether it be apparent/visual or absolute magnitude is measured by a number, the smaller the number, the brighter the Star is. Our own Sun is the brightest star and therefore has the lowest of all magnitudes, -26.74. A faint star will have a high number.
Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 0.90 which gave the calculated distance to HIP 66284 as 3624.04 light years away from Earth or 1111.11 parsecs. It would take a spaceship travelling at the speed of light, 3624.04 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.
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 66284|
|Alternative Names||HIP 66284, BD+39 2659|
|Constellation's Main Star||No|
|Multiple Star System||No / Unknown|
|Colour||orange to red|
|Visual / Apparent Magnitude||9.66|
|Naked Eye Visible||Requires a 7x50 Binoculars - Magnitudes|
|Right Ascension (R.A.)||13h 35m 07.41|
|Declination (Dec.)||+38° 18` 21.9|
|Galactic Latitude||75.55 degrees|
|Galactic Longitude||86.35 degrees|
|Distance from Earth||0.90 Parallax (milliarcseconds)|
|3624.04 Light Years|
|229,181,291.91 Astronomical Units|
|Calculated Effective Temperature||4,422 Kelvin|
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