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HIP 25146, HD269475

HIP 25146 is a blue supergiant star that can be located in the constellation of Mensa. The description is based on the spectral class. HIP 25146 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 25146's Alternative Names

HIP25146 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD269475.

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

Location of HIP 25146

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 25146, the location is 05h 22m 51.19 and -71° 43` 04.3 .

Physical Properties (Colour, Temperature) of HIP 25146

HIP 25146 has a spectral type of B3Iab:. This means the star is a blue supergiant star. The star has a B-V Colour Index of -0.01 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 10,551 Kelvin.

HIP 25146 Apparent and Absolute Magnitudes

HIP 25146 has an apparent magnitude of 11.58 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 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 25146

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as -1.97 which gave the calculated distance to HIP 25146 as -1655.65 light years away from Earth or -507.61 parsecs. It would take a spaceship travelling at the speed of light, -1655.65 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 25146 Facts

Visual Facts


Primary / Proper / Traditional NameHIP 25146
Alternative NamesHD 269475, HIP 25146
Spectral TypeB3Iab:
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star Type very luminous Supergiant Star
Colour blue
GalaxyMilky Way
ConstellationMensa
Visual / Apparent Magnitude11.58
Naked Eye VisibleRequires a 4.5 - 6 Inch Telescope - Magnitudes
Right Ascension (R.A.)05h 22m 51.19
Declination (Dec.)-71° 43` 04.3
Galactic Latitude-32.56 degrees
Galactic Longitude282.77 degrees
Distance from Earth-1.97 Parallax (milliarcseconds)
 -1655.65 Light Years
 -507.61 Parsecs
B-V Index-0.01
Radial Velocity251.00 ± 999.00 km/s

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Estimated Facts


Calculated Effective Temperature10,551 Kelvin

Sources and Links


SIMBAD SourceLink

Related Stars


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