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HIP 64542, HD114848

HIP 64542 is a blue to white subgiant star that can be located in the constellation of Centaurus. 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 1.10 Billion of Years but could be as young as 1.00 to 1.20 according to Hipparcos.

HIP 64542's Alternative Names

HIP64542 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD114848.

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

Location of HIP 64542

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 64542, the location is 13h 13m 43.56 and -35° 56` 46.1 .

Proper Motion of HIP 64542

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 -24.32 ± 0.67 miliarcseconds/year towards the north and 3.32 ± 0.88 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 -1.40000 km/s with an error of about 1.10 km/s .

HIP 64542 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 13.95 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 64542

HIP 64542 has a spectral type of F2IV. This means the star is a blue to white subgiant star. The star is 7,291.00 Parsecs from the Galactic Centre or terms of Light Years is 23,780.57 s. The star has a B-V Colour Index of 0.38 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 6,822 Kelvin.

HIP 64542 Radius has been calculated as being 3.43 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 2,385,339.31.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 2.84. 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 0.15 with an error value of 0.15 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 1.10 Billion years old but could be between 1.00 and 1.20 Billion years old. In comparison, the Sun's age is about 4.6 Billion Years Old.

HIP 64542 Apparent and Absolute Magnitudes

HIP 64542 has an apparent magnitude of 8.46 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 1.45 If you used the 2007 Parallax value, you would get an absolute magnitude of 1.86. 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 64542

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 3.96 which gave the calculated distance to HIP 64542 as 823.64 light years away from Earth or 252.53 parsecs. It would take a spaceship travelling at the speed of light, 823.64 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 4.78 which put HIP 64542 at a distance of 682.35 light years or 209.21 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 7,291.00 Parsecs or 23,780.57 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 64542 Facts

Visual Facts


Primary / Proper / Traditional NameHIP 64542
Alternative NamesHD 114848, HIP 64542
Spectral TypeF2IV
Multiple Star SystemNo / Unknown
Star TypeSubgiant Star
Colour blue to white
GalaxyMilky Way
ConstellationCentaurus
Age1.10 Billion Years Old
Age Range1.00 - 1.20 Billion Years Old
Absolute Magnitude1.45 / 1.86
Visual / Apparent Magnitude8.46
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)13h 13m 43.56
Declination (Dec.)-35° 56` 46.1
Galactic Latitude26.71 degrees
Galactic Longitude307.98 degrees
1997 Distance from Earth3.96 Parallax (milliarcseconds)
 823.64 Light Years
 252.53 Parsecs
2007 Distance from Earth4.78 Parallax (milliarcseconds)
 682.35 Light Years
 209.21 Parsecs
Galacto-Centric Distance23,780.57 Light Years / 7,291.00 Parsecs
Proper Motion Dec.-24.32 ± 0.67 milliarcseconds/year
Proper Motion RA.3.32 ± 0.88 milliarcseconds/year
B-V Index0.38
Radial Velocity-1.40 ± 1.10 km/s
Iron Abundance0.15 ± 0.15 Fe/H
Eccentricity0.13
Semi-Major Axis7773.00
Stellar Luminosity (Lsun)13.95

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Estimated Facts


Calculated Effective Temperature6,822 Kelvin

Sources and Links


SIMBAD SourceLink

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