Universe Guide

CQ Cephei (Wolf-Rayet Star) Facts

CQ Cephei Facts

CQ Cephei's Alternative Names

HIP111633 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD214419.

CQ Cephei has alternative name(s) :- CQ Cep, CQ Cep.

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+56 2818.

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

Location of CQ Cephei

The location of the wolf-rayet 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 CQ Cephei, the location is 22h 36m 53.96 and +56° 54` 21.0 .

Wolf-Rayet Star

The star is a Wolf-Rayet, a rare type of star of which not many are known. These stars are extremely luminous and large compared to our Sun. They live fast and die hard in a matter of millions not billions of years like our Sun. They exhaust their hydrogen supplies, turning to other gasses and expand outwards with massive solar winds, moving a step closer in the stellar evolution towards their death in a super or hypernova explosion.

Physical Properties (Temperature) of CQ Cephei

CQ Cephei Colour and Temperature

CQ Cephei has a spectral type of WN7 (SB1). The star has a B-V Colour Index of 0.37 which means the star's temperature is about 6,501 Kelvin. The temperature was calculated using information from Morgans @ Uni.edu at being .

CQ Cephei Radius

Radius has been calculated as being 88.92 times bigger than the Sun. The Sun's radius is 695,800km, therefore the star's radius is an estimated 61,870,070.51.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.

CQ Cephei Apparent and Absolute Magnitudes

CQ Cephei has an apparent magnitude of 8.86 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 -5.41 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 CQ Cephei

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 0.14 which gave the calculated distance to CQ Cephei as 23297.38 light years away from Earth or 7142.86 parsecs. If you want that in miles, it is 15,623,610,440,132.

Travel Time to CQ Cephei

The time it will take to travel to this star is dependent on how fast you are going. U.G. has done some calculations as to how long it will take going at differing speeds. A note about the calculations, when I'm talking about years, I'm talking non-leap years only (365 days).

The New Horizons space probe is the fastest probe that we've sent into space at the time of writing. Its primary mission was to visit Pluto which at the time of launch (2006), Pluto was still a planet.

DescriptionSpeed (m.p.h.)Time (years)
Airbus A38073621,227,731,576.27
Speed of Sound (Mach 1)767.26920,362,624,373.11
Concorde (Mach 2)1,534.5410,181,298,917.03
New Horizons Probe33,000473,442,740.61
Speed of Light670,616,629.0023,297.38

Variable Type of CQ Cephei

The star is a eclipsing 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. CQ Cephei brightness ranges from a magnitude of 9.161 to a magnitude of 8.725 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.

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Additional CQ Cephei Facts and Figures

Visual Facts

Primary / Proper / Traditional NameCQ Cephei
Alternative NamesCQ Cep, HD 214419, HIP 111633, BD+56 2818, CQ Cep, WR 155
Spectral TypeWN7 (SB1)
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeWolf-Rayet star
GalaxyMilky Way
Absolute Magnitude -5.41
Visual / Apparent Magnitude8.86
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)22h 36m 53.96
Declination (Dec.)+56° 54` 21.0
Galactic Latitude-1.29 degrees
Galactic Longitude105.32 degrees
Distance from Earth0.14 Parallax (milliarcseconds)
 23297.38 Light Years
 7142.86 Parsecs
 1,473,310,367.78 Astronomical Units
B-V Index0.37
Radial Velocity-53.40 ± 7.40 km/s

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Variable Star Details

Variable Star ClassEclipsing
Variable Star TypeBeta Lyrae (Sheliak)
Mean Variability Period in Days1.641
Variable Magnitude Range (Brighter - Dimmer)8.725 - 9.161

Estimated Calculated Facts

Radius (x the Sun)88.92
Effective Temperature6,501 Kelvin

Sources and Links

SIMBAD SourceLink

Related Stars

Comments and Questions

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