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V486 Cassiopeiae, HD3950, HIP3346

V486 Cassiopeiae is a blue eclipsing binary system giant star that can be located in the constellation of Cassiopeia. 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.

V486 Cassiopeiae's Alternative Names

HIP3346 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD3950.

V486 Cassiopeiae has alternative name(s) :- , V486 Cas.

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+51 133.

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

Location of V486 Cassiopeiae

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 V486 Cassiopeiae, the location is 00h 42m 37.99 and +52° 20` 13.8 .

Physical Properties (Colour, Temperature) of V486 Cassiopeiae

V486 Cassiopeiae has a spectral type of B1III. This means the star is a blue giant star. The star has a B-V Colour Index of 0.05 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 8,917 Kelvin.

V486 Cassiopeiae Radius has been calculated as being 72.87 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 50,700,546.23.km. If you need the diameter of the star, you just need to multiple the radius by 2. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures.

V486 Cassiopeiae Apparent and Absolute Magnitudes

V486 Cassiopeiae has an apparent magnitude of 6.94 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 -6.35 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 V486 Cassiopeiae

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 0.22 which gave the calculated distance to V486 Cassiopeiae as 14825.61 light years away from Earth or 4545.45 parsecs. It would take a spaceship travelling at the speed of light, 14825.61 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

Variable Type of V486 Cassiopeiae

The star is a eclipsing binary system Eclipsing 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. V486 Cassiopeiae brightness ranges from a magnitude of 6.985 to a magnitude of 6.950 over its variable period. The smaller the magnitude, the brighter the star.

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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V486 Cassiopeiae Facts

Visual Facts


Primary / Proper / Traditional NameV486 Cassiopeiae
Alternative NamesHD 3950, HIP 3346, BD+51 133, V486 Cas
Spectral TypeB1III
Multiple Star SystemNo / Unknown
Star TypeGiant Star
Colour blue
GalaxyMilky Way
ConstellationCassiopeia
Absolute Magnitude-6.35
Visual / Apparent Magnitude6.94
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)00h 42m 37.99
Declination (Dec.)+52° 20` 13.8
Galactic Latitude-10.51 degrees
Galactic Longitude121.56 degrees
Distance from Earth0.22 Parallax (milliarcseconds)
 14825.61 Light Years
 4545.45 Parsecs
B-V Index0.05
Radial Velocity-82.30 ± 4.40 km/s

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Variable Star Details


Variable Star ClassEclipsing binary system
Variable Star TypeEclipsing
Variable Magnitude Range (Brighter - Dimmer)6.950 - 6.985

Estimated Facts


Calculated Effective Temperature8,917 Kelvin

Sources and Links


SIMBAD SourceLink

Related Stars


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