Universe Guide

Beta Phoenicis

Beta Phoenicis Facts

  • Beta Phoenicis is a giant star that can be located in the constellation of Phoenix. The description is based on the spectral class.
  • Beta Phoenicis is a main star of the constellation outline.
  • Based on the spectral type (G8IIIvar) of the star, the star's colour is yellow .
  • The star can be seen with the naked eye, that is, you don't need a telescope/binoculars to see it.
  • Using the most recent figures given by the 2007 Hipparcos data, the star is 27180.28 light years away from us. Distance

Beta Phoenicis's Alternative Names

Beta Phoenicis (Bet Phe) 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.

The Id of the star in the Yale Bright Star Catalogue is HR322. HIP5165 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD6595.

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

Location of Beta Phoenicis

The location of the giant 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 Beta Phoenicis, the location is 01h 06m 05.11 and -46° 43` 06.6 .

Radial Velocity and Proper Motion of Beta Phoenicis

Proper Motion

All stars like planets orbit round a central spot, in the case of planets, its the central star such as the Sun. In the case of a star, its the galactic centre. The constellations that we see today will be different than they were 50,000 years ago or 50,000 years from now. Proper Motion details the movements of these stars and are measured in milliarcseconds. The star is moving 34.97 ± 8.86 milliarcseconds/year towards the north and -80.81 ± 14.62 milliarcseconds/year east if we saw them in the horizon.

Radial Velocity

The Radial Velocity, that is the speed at which the star is moving away/towards the Sun is -1.10000 km/s with an error of about 0.74 km/s . When the value is negative then the star and the Sun are getting closer to one another, likewise, a positive number means that two stars are moving away. Its nothing to fear as the stars are so far apart, they won't collide in our life-time, if ever.

Physical Properties of Beta Phoenicis

Beta Phoenicis Temperature and Colour

Based on the star's spectral type of G8IIIvar , Beta Phoenicis's colour and type is yellow giant star. The star has a B-V Colour Index of 0.8 which means the star's temperature is about 5,286 Kelvin. The temperature was calculated using information from Morgans @ Uni.edu.

Beta Phoenicis Radius

Beta Phoenicis estimated radius has been calculated as being 14.68 times bigger than the Sun. The Sun's radius is 695,800km, therefore the star's radius is an estimated 10,212,672.45.km. If you need the diameter of the star, you just need to multiple the radius by 2. However with the 2007 release of updated Hipparcos files, the radius is now calculated at being round 2007.9820675354348427103484757. The figure is derived at by using the formula from SDSS rather than peer reviewed papers. It has been known to produce widely incorrect figures.

Beta Phoenicis Apparent and Absolute Magnitudes

Beta Phoenicis has an apparent magnitude of 3.32 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. If you used the 1997 Parallax value, you would get an absolute magnitude of -0.60 If you used the 2007 Parallax value, you would get an absolute magnitude of -11.28. 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 Beta Phoenicis

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 16.46000 which gave the calculated distance to Beta Phoenicis as 198.16 light years away from Earth or 60.75 parsecs. If you want that in miles, it is about 1,164,908,403,950,064.16, based on 1 Ly = 5,878,625,373,183.61 miles.

In 2007, Hipparcos data was revised with a new parallax of 0.12000 which put Beta Phoenicis at a distance of 27180.28 light years or 8333.33 parsecs. It should not be taken as though the star is moving closer or further away from us. It is purely that the distance was recalculated.

Using the 2007 distance, the star is roughly 1,718,860,720.66 Astronomical Units from the Earth/Sun give or take a few. An Astronomical Unit is the distance between Earth and the Sun. The number of A.U. is the number of times that the star is from the Earth compared to the Sun.

Travel Time to Beta Phoenicis

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 A38073624,765,689,876.19
Speed of Sound (Mach 1)767.26923,756,398,015.40
Concorde (Mach 2)1,534.5411,878,183,526.58
New Horizons Probe33,000552,349,931.78
Speed of Light670,616,629.0027,180.28

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 Beta Phoenicis Facts and Figures

Visual Facts

Primary / Proper / Traditional NameBeta Phoenicis
Alternative NamesBet Phe, HD 6595, HIP 5165, HR 322
Spectral TypeG8IIIvar
Constellation's Main StarYes
Multiple Star SystemYes
Star TypeGiant Star
GalaxyMilky Way
Absolute Magnitude -0.60 / -11.28
Visual / Apparent Magnitude3.32
Naked Eye VisibleYes - Magnitudes
Right Ascension (R.A.)01h 06m 05.11
Declination (Dec.)-46° 43` 06.6
Galactic Latitude-70.19798460 degrees
Galactic Longitude295.50565975 degrees
1997 Distance from Earth16.46000 Parallax (milliarcseconds)
 198.16 Light Years
 60.75 Parsecs
2007 Distance from Earth0.12000 Parallax (milliarcseconds)
 27180.28 Light Years
 8333.33 Parsecs
 1,718,860,720.66 Astronomical Units
Proper Motion Dec.34.97000 ± 8.86000 milliarcseconds/year
Proper Motion RA.-80.81000 ± 14.62000 milliarcseconds/year
B-V Index0.8
Radial Velocity-1.10000 ± 0.74 km/s

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Estimated Calculated Facts

Radius (x the Sun)2,007.98
Effective Temperature5,286 Kelvin

Sources and Links

SIMBAD SourceLink

Multi-Star System

The star has been identified as being a multi-star system, one in which there is at least one star in close orbit to another star or two or more stars orbiting a central point. The stars may be of equal mass, unequal mass where one star is stronger than the other or be in groups orbiting a central point which doesn't necessarily have to be a star. More information can be found on my dedicated multiple star systems page. The source of the info is Simbad. The file is dated 2000 so any differences between this and any other source will be down to the actual source from where the information came from.

Proper Motion mas/yr
H.D. IdB.D. IdStar CodeMagnitudeR.A.Dec.SpectrumColourYear
6595-47 324.2A4.00000-26.0000011.00000K0Orange

Location of Beta Phoenicis in Phoenix

Beta Phoenicis Location in Phoenix

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

Phoenix Main Stars

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