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HIP 25512, HD243692

HIP 25512 is a white to yellow star that can be located in the constellation of Auriga. 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 25512's Alternative Names

HIP25512 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD243692.

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+30 900.

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

Location of HIP 25512

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 25512, the location is 05h 27m 21.41 and +30° 50` 35.7 .

Proper Motion of HIP 25512

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 -6.85 ± 0.88 miliarcseconds/year towards the north and 14.76 ± 1.66 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.

Physical Properties (Colour, Temperature) of HIP 25512

HIP 25512 has a spectral type of G0. This means the star is a white to yellow star. The star has a B-V Colour Index of 0.87 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 5,262 Kelvin.

HIP 25512 Apparent and Absolute Magnitudes

HIP 25512 has an apparent magnitude of 9.65 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 If you used the 2007 Parallax value, you would get an absolute magnitude of -0.31. 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 25512

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as -0.11 which gave the calculated distance to HIP 25512 as -29651.21 light years away from Earth or -9090.91 parsecs. It would take a spaceship travelling at the speed of light, -29651.21 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 1.02 which put HIP 25512 at a distance of 3197.68 light years or 980.39 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 25512 Facts

Visual Facts


Primary / Proper / Traditional NameHIP 25512
Alternative NamesHD 243692, HIP 25512, BD+30 900
Spectral TypeG0
Multiple Star SystemNo / Unknown
Star TypeStar
Colour white to yellow
GalaxyMilky Way
ConstellationAuriga
Visual / Apparent Magnitude9.65
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)05h 27m 21.41
Declination (Dec.)+30° 50` 35.7
Galactic Latitude-2.31 degrees
Galactic Longitude176.26 degrees
1997 Distance from Earth-0.11 Parallax (milliarcseconds)
 -29651.21 Light Years
 -9090.91 Parsecs
2007 Distance from Earth1.02 Parallax (milliarcseconds)
 3197.68 Light Years
 980.39 Parsecs
Proper Motion Dec.-6.85 ± 0.88 milliarcseconds/year
Proper Motion RA.14.76 ± 1.66 milliarcseconds/year
B-V Index0.87

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Estimated Facts


Calculated Effective Temperature5,262 Kelvin

Sources and Links


SIMBAD SourceLink

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