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HIP 66302, HD118265

HIP 66302 is a orange to red star that can be located in the constellation of Coma Berenices. The description is based on the spectral class. HIP 66302 is not part of the constellation but is within the borders of the constellation.

The star can not be seen by the naked eye, you need a telescope to see it.

HIP 66302's Alternative Names

HIP66302 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD118265.

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+21 2549.

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

Location of HIP 66302

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 66302, the location is 13h 35m 17.94 and +20° 36` 25.9 .

Physical Properties (Colour, Temperature) of HIP 66302

HIP 66302 has a spectral type of K5. This means the star is a orange to red star. The star has a B-V Colour Index of 1.23 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 4,512 Kelvin.

HIP 66302 Radius has been calculated as being 259.55 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 180,596,789.74.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 66302 Apparent and Absolute Magnitudes

HIP 66302 has an apparent magnitude of 9.08 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 -6.15 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.

Distance to HIP 66302

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 0.09 which gave the calculated distance to HIP 66302 as 36240.37 light years away from Earth or 11111.11 parsecs. It would take a spaceship travelling at the speed of light, 36240.37 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

Source of Information

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.

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HIP 66302 Facts

Visual Facts


Primary / Proper / Traditional NameHIP 66302
Alternative NamesHD 118265, HIP 66302, BD+21 2549
Spectral TypeK5
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeStar
Colour orange to red
GalaxyMilky Way
ConstellationComa Berenices
Absolute Magnitude -6.15
Visual / Apparent Magnitude9.08
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)13h 35m 17.94
Declination (Dec.)+20° 36` 25.9
Galactic Latitude78.05 degrees
Galactic Longitude2.22 degrees
Distance from Earth0.09 Parallax (milliarcseconds)
 36240.37 Light Years
 11111.11 Parsecs
 2,291,814,981.75 Astronomical Units
B-V Index1.23
Radial Velocity-28.96 ± 0.52 km/s

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Estimated Facts


Calculated Effective Temperature4,512 Kelvin

Sources and Links


SIMBAD SourceLink

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