Universe Guide
HomeAliensConstellationsTelevision and Films ListFact ListGames ListWarcraftSearchTwitterFacebook

HIP 25256, HD35689

HIP 25256 is a blue to white main sequence dwarf star that can be located in the constellation of Pictor. 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. The star has an estimated age of 2.30 Billion of Years but could be as young as 1.10 to 3.30 according to Hipparcos.

HIP 25256's Alternative Names

HIP25256 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD35689.

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

Location of HIP 25256

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 25256, the location is 05h 24m 05.31 and -47° 20` 25.7 .

Proper Motion of HIP 25256

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 -40.07 ± 0.49 miliarcseconds/year towards the north and -6.16 ± 0.49 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 2.10000 km/s with an error of about 0.40 km/s .

HIP 25256 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 2.86 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, Age) of HIP 25256

HIP 25256 has a spectral type of F3V. This means the star is a blue to white main sequence dwarf star. The star is 7,417.00 Parsecs from the Galactic Centre or terms of Light Years is 24,191.54 s. The star has a B-V Colour Index of 0.46 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 6,456 Kelvin.

HIP 25256 Radius has been calculated as being 1.29 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 898,304.10.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 1.32. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures. The star's Iron Abundance is -0.41 with an error value of 0.08 Fe/H with the Sun has a value of 1 to put it into context.

The stars age according to Hipparcos data files put the star at an age of about 2.30 Billion years old but could be between 1.10 and 3.30 Billion years old. In comparison, the Sun's age is about 4.6 Billion Years Old.

HIP 25256 Apparent and Absolute Magnitudes

HIP 25256 has an apparent magnitude of 8.03 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 3.81 If you used the 2007 Parallax value, you would get an absolute magnitude of 3.77. 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 25256

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 14.33 which gave the calculated distance to HIP 25256 as 227.61 light years away from Earth or 69.78 parsecs. It would take a spaceship travelling at the speed of light, 227.61 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 14.06 which put HIP 25256 at a distance of 231.98 light years or 71.12 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 7,417.00 Parsecs or 24,191.54 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.

Hide Explanations
Show GridLines

HIP 25256 Facts

Visual Facts


Primary / Proper / Traditional NameHIP 25256
Alternative NamesHD 35689, HIP 25256
Spectral TypeF3V
Multiple Star SystemNo / Unknown
Star Type main sequence Dwarf Star
Colour blue to white
GalaxyMilky Way
ConstellationPictor
Age2.30 Billion Years Old
Age Range1.10 - 3.30 Billion Years Old
Absolute Magnitude3.81 / 3.77
Visual / Apparent Magnitude8.03
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)05h 24m 05.31
Declination (Dec.)-47° 20` 25.7
Galactic Latitude-34.03 degrees
Galactic Longitude253.55 degrees
1997 Distance from Earth14.33 Parallax (milliarcseconds)
 227.61 Light Years
 69.78 Parsecs
2007 Distance from Earth14.06 Parallax (milliarcseconds)
 231.98 Light Years
 71.12 Parsecs
Galacto-Centric Distance24,191.54 Light Years / 7,417.00 Parsecs
Proper Motion Dec.-40.07 ± 0.49 milliarcseconds/year
Proper Motion RA.-6.16 ± 0.49 milliarcseconds/year
B-V Index0.46
Radial Velocity2.10 ± 0.40 km/s
Iron Abundance-0.41 ± 0.08 Fe/H
Eccentricity0.18
Semi-Major Axis8329.00
Stellar Luminosity (Lsun)2.86

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Estimated Facts


Calculated Effective Temperature6,456 Kelvin

Sources and Links


SIMBAD SourceLink

Related Stars


Add a Comment


Name:
Email: (Optional)
Comment: