Universe Guide
Search

Polaris B (Companion Star) Facts

Polaris B Facts

  • Polaris B is a main sequence star that can be located in the constellation of Ursa Minor. The description is based on the spectral class.
  • Polaris B is not part of the constellation outline but is within the borders of the constellation.
  • Based on the spectral type (F3V) of the star, the star's colour is yellow to white .
  • The star can not be seen by the naked eye, you need a telescope to see it.
  • Polaris B has a radius that is 1.38 times bigger than the Suns. Radius

Polaris B's Alternative Names

(Alpha Ursae Minoris B) is the Bayer Classification for the star. The Bayer Classification was created by Johann Bayer in 1603. The brightest star in the constellation is normally given the Alpha designation, there are exceptions such as Pollux which is Beta Geminorum.

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

Physical Properties of Polaris B

Polaris B Temperature and Colour

Based on the star's spectral type of F3V , Polaris B's colour and type is yellow to white main sequence star. Based on the star's spectral, the stars temperature is between 6,000.00 and 7,500.00 degrees kelvin.

Polaris B Radius

Polaris B Radius has been calculated as being 1.38 times bigger than the Sun. The Sun's radius is 695,800km, therefore the star's radius is an estimated 960,204.00.km. If you need the diameter of the star, you just need to multiple the radius by 2.

Polaris B Apparent and Absolute Magnitudes

Polaris B has an apparent magnitude of 8.70 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. 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 Polaris B

Polaris B is an estimated 431.43 light years from our Solar System (Earth and Sun). It would take a spaceship 431.43 years travelling at the speed of light to get there. We don't have a space ship that can travel that distance or at that speed yet.

Hide Explanations
Show GridLines

Additional Polaris B Facts and Figures

Visual Facts


Primary / Proper / Traditional NamePolaris B
Alternative Names Alpha Ursae Minoris B
Spectral TypeF3V
Constellation's Main StarNo
Multiple Star SystemYes
Star Type Main Sequence Dwarf Star
ColourYellow - White
GalaxyMilky Way
ConstellationUrsa Minor
Visual / Apparent Magnitude8.70
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Declination (Dec.)+89 ° 51` 38.1
Distance from the Sun / Earth431.43 Light Years
Associated / Clustered StarsPolaris
Polaris Ab

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Estimated Calculated Facts


Radius (x the Sun)1.38
Calculated Temperature Range6,000.00 - 7,500.00

Location of Polaris B in Ursa Minor


Polaris B Location in Ursa Minor

The map was generated using Night Vision, an awesome free application by Brian Simpson.

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.

You can decline to give a name which if that is the case, the comment will be attributed to a random star. A name is preferred even if its a random made up one by yourself.

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