Universe Guide


WW Aurigae - HD46052 - HIP31173

WW Aurigae is a blue eclipsing star that can be located in the constellation of Auriga. HIP31173 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD46052. WW Aurigae has alternative name(s), WW_Aur.

Location of WW Aurigae

The location of the star in the galaxy 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 WW Aurigae, the location is 06h 32m 27.20 and +32d27`17.8 .

Proper Motion of WW Aurigae

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 -017.35 ± 000.19 towards the north and -026.16 ± 000.35 east if we saw them in the horizon.

Physical Properties (Colour, Temperature, Radius) of WW Aurigae

WW Aurigae has a spectral type of A3m + A3m. This means the star is a blue star. The star has a B-V Colour Index of 0.18 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 7,564 Kelvin.

WW Aurigae has been calculated as 3.14 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 2,187,122.49.km.

WW Aurigae Apparent and Absolute Magnitudes

WW Aurigae has an apparent magnitude of 5.82 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 1.19 If you used the 2007 Parallax value, you would get an absolute magnitude of 1.29. 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 WW Aurigae

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 11.86 which gave the calculated distance to WW Aurigae as 275.01 light years away from Earth or 84.32 parsecs. It would take a spaceship travelling at the speed of light, 275.01 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 12.41 which put WW Aurigae at a distance of 262.82 light years or 80.58 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.

Variable Type of WW Aurigae

The star is a eclipsing Beta Persei (Algol)/Detached Main Sequence (subtype) variable type which means that its size changes over time. The Variable Type is usually named after the first star of that type to be spotted. WW Aurigae brightness ranges from a magnitude of 6.000 to a magnitude of 6.000 over its variable period. The smaller the magnitude, the brighter the star. Its variable/pulsating period lasts for 3.0 days (variability).

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 Stellar Age, Metallicity or Mass is from the E.U. Exoplanets. The information was obtained as of 12th Feb 2017.

WW Aurigae Facts

Alternative Names

Traditional NameWW Aurigae
Short NameWW Aur
Hipparcos Library I.D.31173
Bonner DurchmusterungBD+32 1324
Henry Draper Designation46052

Visual Facts

Star Type star
Absolute Magnitude1.19 / 1.29
Apparent Magnitude5.82
Right Ascension (R.A.)06h 32m 27.20
Declination (Dec.)+32d27`17.8
1997 Distance from Earth11.86 Parallax (milliarcseconds)
 275.01 Light Years
 84.32 Parsecs
2007 Revised Distance from Earth12.41 Parallax (milliarcseconds)
 262.82 Light Years
 80.58 Parsecs
Proper Motion Dec.-17.35 ± 0.19 milliarcseconds/year
Proper Motion RA.-26.16 ± 0.35 milliarcseconds/year
B-V Index0.18
Spectral TypeA3m + A3m
Colour(A) blue

Variable Star Details

Variable Star ClassEclipsing
Variable Star TypeBeta Persei (Algol)/Detached Main Sequence (subtype)
Mean Variability Period in Days3.000

Estimated Facts

Radius (x the Sun)3.14
Calculated Effective Temperature7,564 Kelvin

Sources and Links

SIMBAD SourceLink

Related Stars

Add a Comment

Email: (Optional)