Universe Guide
HomeAliensConstellationsTelevision and Films ListFact ListGames ListWarcraftSearchTwitterFacebookComments

BF Aurigae

BF Aurigae Facts

BF Aurigae's Alternative Names

HIP23657 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD32419.

BF Aurigae has alternative name(s) :- BF Aur, BF Aur.

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+41 1051.

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

Location of BF Aurigae

The location of the main sequence 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 object is compared to the celestial equator and is expressed in degrees. For BF Aurigae, the location is 05h 05m 03.50 and +41° 17` 19.1 .

Physical Properties (Colour, Temperature) of BF Aurigae

BF Aurigae has a spectral type of B5V SB. This means the star is a blue main sequence star. The star has a B-V Colour Index of -0.02 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 9,839 Kelvin.

BF Aurigae Radius has been calculated as being 274.85 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 191,240,885.72.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.

BF Aurigae Apparent and Absolute Magnitudes

BF Aurigae has an apparent magnitude of 8.83 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 -9.66 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 BF Aurigae

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 0.02 which gave the calculated distance to BF Aurigae as 163081.67 light years away from Earth or 50000 parsecs. It would take a spaceship travelling at the speed of light, 163081.67 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

Variable Type of BF Aurigae

The star is a eclipsing binary sys Beta Lyrae (Sheliak) 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. BF Aurigae brightness ranges from a magnitude of 9.462 to a magnitude of 8.759 over its variable period. The smaller the magnitude, the brighter the star. Its variable/pulsating period lasts for 1.6 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 Metallicity and/or Mass is from the E.U. Exoplanets. The information was obtained as of 12th Feb 2017.

Hide Explanations
Show GridLines

Additional BF Aurigae Facts and Figures

Visual Facts


Primary / Proper / Traditional NameBF Aurigae
Alternative NamesBF Aur, HD 32419, HIP 23657, BD+41 1051, BF Aur
Spectral TypeB5V SB
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star Type main sequence Dwarf Star
ColourBlue
GalaxyMilky Way
ConstellationAuriga
Absolute Magnitude -9.66
Visual / Apparent Magnitude8.83
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)05h 05m 03.50
Declination (Dec.)+41° 17` 19.1
Galactic Latitude0.09 degrees
Galactic Longitude165.15 degrees
Distance from Earth0.02 Parallax (milliarcseconds)
 163081.67 Light Years
 50000 Parsecs
 10,313,168,449.20 Astronomical Units
B-V Index-0.02
Radial Velocity10.00 ± 7.40 km/s

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Variable Star Details


Variable Star ClassEclipsing binary sys
Variable Star TypeBeta Lyrae (Sheliak)
Mean Variability Period in Days1.583
Variable Magnitude Range (Brighter - Dimmer)8.759 - 9.462

Estimated Calculated Facts


Radius (x the Sun)274.85
Effective Temperature9,839 Kelvin

Sources and Links


SIMBAD SourceLink

Related Stars


Comments and Questions

There's no register feature and no need to give an email address if you don't need to. All messages will be reviewed before being displayed. Comments may be merged or altered slightly such as if an email address is given in the main body of the comment.

   
x
This website is using cookies. More info. That's Fine