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HIP 25259, HD35567

HIP 25259 is a blue main sequence dwarf star that can be located in the constellation of Columba. The description is based on the spectral class. HIP 25259 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 25259's Alternative Names

HIP25259 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD35567.

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

Location of HIP 25259

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 25259, the location is 05h 24m 08.16 and -34° 24` 55.8 .

Proper Motion of HIP 25259

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 45.76 ± 0.45 miliarcseconds/year towards the north and 29.66 ± 0.53 miliarcseconds/year east if we saw them in the horizon. . When the value is negative then the star and the Sun are getting closer to one another, likewise, a positive number means that two stars are moving away. Its nothing to fear as the stars are so far apart, they won't collide in our life-time, if ever.

HIP 25259 Luminosity

Luminosity is the amount of energy that a star pumps out and its relative to the amount that our star, the Sun gives out. The figure of 11.33 that I have given is based on the value in the Simbad Hipparcos Extended Catalogue at the University of Strasbourg from 2012.

Physical Properties (Colour, Temperature) of HIP 25259

HIP 25259 has a spectral type of A4V. This means the star is a blue main sequence dwarf star. The star is 7,451.00 Parsecs from the Galactic Centre or terms of Light Years is 24,302.43 s. The star has a B-V Colour Index of 0.2 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 7,767 Kelvin.

HIP 25259 Radius has been calculated as being 2.09 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 1,454,996.60.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 1.92. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures.

HIP 25259 Apparent and Absolute Magnitudes

HIP 25259 has an apparent magnitude of 7.45 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 1.96 If you used the 2007 Parallax value, you would get an absolute magnitude of 2.15. 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 25259

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 7.98 which gave the calculated distance to HIP 25259 as 408.73 light years away from Earth or 125.31 parsecs. It would take a spaceship travelling at the speed of light, 408.73 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 8.72 which put HIP 25259 at a distance of 374.04 light years or 114.68 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.

The star's Galacto-Centric Distance is 7,451.00 Parsecs or 24,302.43 Light Years. The Galacto-Centric Distance is the distance from the star to the Centre of the Galaxy which is Sagittarius A*.

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 25259 Facts

Visual Facts


Primary / Proper / Traditional NameHIP 25259
Alternative NamesHD 35567, HIP 25259
Spectral TypeA4V
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star Type main sequence Dwarf Star
Colour blue
GalaxyMilky Way
ConstellationColumba
Absolute Magnitude 1.96 / 2.15
Visual / Apparent Magnitude7.45
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)05h 24m 08.16
Declination (Dec.)-34° 24` 55.8
Galactic Latitude-32.05 degrees
Galactic Longitude238.30 degrees
1997 Distance from Earth7.98 Parallax (milliarcseconds)
 408.73 Light Years
 125.31 Parsecs
2007 Distance from Earth8.72 Parallax (milliarcseconds)
 374.04 Light Years
 114.68 Parsecs
Galacto-Centric Distance24,302.43 Light Years / 7,451.00 Parsecs
Proper Motion Dec.45.76 ± 0.45 milliarcseconds/year
Proper Motion RA.29.66 ± 0.53 milliarcseconds/year
B-V Index0.20
Stellar Luminosity (Lsun)11.33

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Estimated Facts


Calculated Effective Temperature7,767 Kelvin

Sources and Links


SIMBAD SourceLink

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