Universe Guide

Circinus X-1

Circinus X-1 Facts

  • Circinus X-1 is a star that can be located in the constellation of Circinus. The description is based on the spectral class.
  • Circinus X-1 is not part of the constellation outline but is within the borders of the constellation.
  • Based on the spectral type (B5-A0) of the star, the star's colour is blue .
  • The star can not be seen by the naked eye, you need a telescope to see it.

Circinus X-1's Alternative Names

Circinus X-1 has alternative name(s) :- BR Circinus.

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

Location of Circinus X-1

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 object is compared to the celestial equator and is expressed in degrees. For Circinus X-1, the location is 15h 20m 40.85 and -57° 10` 00.1 .

Physical Properties of Circinus X-1

Circinus X-1 Temperature and Colour

Based on the star's spectral type of B5-A0 , Circinus X-1's colour and type is blue star. Based on the star's spectral, the stars temperature is between 10,000.00 and 30,000.00 degrees kelvin.

Circinus X-1 Apparent and Absolute Magnitudes

Circinus X-1 has an apparent magnitude of 21.40 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 Circinus X-1

Circinus X-1 is an estimated 31,000.00 light years from our Solar System (Earth and Sun). It would take a spaceship 31,000.00 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.

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Additional Circinus X-1 Facts and Figures

Visual Facts

Primary / Proper / Traditional NameCircinus X-1
Alternative NamesBR Circinus
Spectral TypeB5-A0
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeStar
GalaxyMilky Way
Visual / Apparent Magnitude21.40
Naked Eye VisibleRequires 8m Telescope - Magnitudes
Right Ascension (R.A.)15h 20m 40.85
Declination (Dec.)-57° 10` 00.1
Distance from the Sun / Earth31,000.00 Light Years
Argument Of Periastron2.00000

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Variable Star Details

Estimated Calculated Facts

Calculated Temperature Range10,000.00 - 30,000.00

Sources and Links


Related Stars

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