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HIP 6464, HD8369

HIP 6464 is a orange to red giant star that can be located in the constellation of Pisces. The description is based on the spectral class. The star can not be seen by the naked eye, you need a telescope to see it.

HIP 6464's Alternative Names

HIP6464 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD8369.

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+15 201.

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

Location of HIP 6464

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 6464, the location is 01h 23m 08.99 and +16° 18` 06.3 .

Proper Motion of HIP 6464

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 -20.03 ± 0.56 miliarcseconds/year towards the north and 39.01 ± 0.93 miliarcseconds/year east if we saw them in the horizon. The Radial Velocity, that is the speed at which the star is moving away/towards us is -1.00000 km/s with an error of about 1.10 km/s .

Physical Properties (Colour, Temperature) of HIP 6464

HIP 6464 has a spectral type of K2III. This means the star is a orange to red giant star. The star has a B-V Colour Index of 1.38 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 4,192 Kelvin.

HIP 6464 Radius has been calculated as being 153.50 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 106,804,936.59.km. If you need the diameter of the star, you just need to multiple the radius by 2. However with the 2007 release of updated Hipparcos files, the radius is now calculated at being round 18.37. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures.

HIP 6464 Apparent and Absolute Magnitudes

HIP 6464 has an apparent magnitude of 8.32 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. If you used the 1997 Parallax value, you would get an absolute magnitude of -4.69 If you used the 2007 Parallax value, you would get an absolute magnitude of -0.08. 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 6464

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 0.25 which gave the calculated distance to HIP 6464 as 13046.53 light years away from Earth or 4000 parsecs. It would take a spaceship travelling at the speed of light, 13046.53 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

In 2007, Hipparcos data was revised with a new parallax of 2.09 which put HIP 6464 at a distance of 1560.59 light years or 478.47 parsecs. It should not be taken as though the star is moving closer or further away from us. It is purely that the distance was recalculated.

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 6464 Facts

Visual Facts


 HIP 6464
Alternative NamesHD 8369, HIP 6464, BD+15 201
Spectral TypeK2III
Multiple Star SystemNo / Unknown
Star TypeGiant Star
Colour orange to red
GalaxyMilky Way
ConstellationPisces
Absolute Magnitude-4.69 / -0.08
Visual / Apparent Magnitude8.32
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)01h 23m 08.99
Declination (Dec.)+16° 18` 06.3
Galactic Latitude-45.89 degrees
Galactic Longitude133.90 degrees
1997 Distance from Earth0.25 Parallax (milliarcseconds)
 13046.53 Light Years
 4000 Parsecs
2007 Distance from Earth2.09 Parallax (milliarcseconds)
 1560.59 Light Years
 478.47 Parsecs
Proper Motion Dec.-20.03 ± 0.56 milliarcseconds/year
Proper Motion RA.39.01 ± 0.93 milliarcseconds/year
B-V Index1.38
Radial Velocity-1.00 ± 1.10 km/s

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Estimated Facts


Calculated Effective Temperature4,192 Kelvin

Sources and Links


SIMBAD SourceLink

Related Stars


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