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HIP 25375, HD35534

HIP 25375 is a orange to red star that can be located in the constellation of Orion. 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 25375's Alternative Names

HIP25375 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD35534.

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+09 830.

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

Location of HIP 25375

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 25375, the location is 05h 25m 42.05 and +09° 13` 42.9 .

Proper Motion of HIP 25375

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 -20.71 ± 0.72 miliarcseconds/year towards the north and -10.85 ± 1.35 miliarcseconds/year east if we saw them in the horizon.

Physical Properties (Colour, Temperature) of HIP 25375

HIP 25375 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 1.58 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 3,828 Kelvin.

HIP 25375 Radius has been calculated as being 33.80 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 23,520,897.41.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 129.12. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures.

HIP 25375 Apparent and Absolute Magnitudes

HIP 25375 has an apparent magnitude of 8.18 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 -1.01 If you used the 2007 Parallax value, you would get an absolute magnitude of -3.92. 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 25375

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 1.45 which gave the calculated distance to HIP 25375 as 2249.40 light years away from Earth or 689.66 parsecs. It would take a spaceship travelling at the speed of light, 2249.40 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 0.38 which put HIP 25375 at a distance of 8583.25 light years or 2631.58 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 25375 Facts

Visual Facts


 HIP 25375
Alternative NamesHD 35534, HIP 25375, BD+09 830
Spectral TypeK5
Multiple Star SystemYes
Star TypeStar
Colour orange to red
GalaxyMilky Way
ConstellationOrion
Absolute Magnitude-1.01 / -3.92
Visual / Apparent Magnitude8.18
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)05h 25m 42.05
Declination (Dec.)+09° 13` 42.9
Galactic Latitude-14.35 degrees
Galactic Longitude194.44 degrees
1997 Distance from Earth1.45 Parallax (milliarcseconds)
 2249.40 Light Years
 689.66 Parsecs
2007 Distance from Earth0.38 Parallax (milliarcseconds)
 8583.25 Light Years
 2631.58 Parsecs
Proper Motion Dec.-20.71 ± 0.72 milliarcseconds/year
Proper Motion RA.-10.85 ± 1.35 milliarcseconds/year
B-V Index1.58

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Estimated Facts


Calculated Effective Temperature3,828 Kelvin

Sources and Links


SIMBAD SourceLink

Multi-Star System

The star has been identified as being a multi-star system, one in which there is at least one star in close orbit to another star or two or more stars orbiting a central point. The stars may be of equal mass, unequal mass where one star is stronger than the other or be in groups orbiting a central point which doesn't necessarily have to be a star. More information can be found on my dedicated multiple star systems page. The source of the info is Simbad. The file is dated 2000 so any differences between this and any other source will be down to the actual source from where the information came from.


Proper Motion mas/yr
H.D. IdB.D. IdStar CodeMagnitudeR.A.Dec.SpectrumColourYear
35534+09 830.0A8.30000-12.00000-11.00000K5Orange
B13.400001914

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