Universe Guide
SearchTwitter Comments

BO Phoenicis

BO Phoenicis Facts

BO Phoenicis's Alternative Names

HIP1627 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD1639.

BO Phoenicis has alternative name(s) :- , BO Phe.

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

Location of BO 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 BO Phoenicis, the location is 00h 20m 20.16 and -57° 09` 48.1 .

Physical Properties (Colour, Temperature) of BO Phoenicis

BO Phoenicis Colour and Temperature

BO Phoenicis has a spectral type of M4/M5III. This means the star is a red giant star. The star has a B-V Colour Index of 1.45 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 4,076 Kelvin.

BO Phoenicis Radius

Radius has been calculated as being 316.59 times bigger than the Sun. The Sun's radius is 695,800km, therefore the star's radius is an estimated 220,282,379.55.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.

BO Phoenicis Apparent and Absolute Magnitudes

BO Phoenicis has an apparent magnitude of 9.09 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 -6.14 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 BO Phoenicis

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 0.09 which gave the calculated distance to BO Phoenicis as 36240.37 light years away from Earth or 11111.11 parsecs. It would take a spaceship travelling at the speed of light, 36240.37 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

Variable Type of BO Phoenicis

The star is a pulsating Semi-Regular Star w 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. BO Phoenicis brightness ranges from a magnitude of 9.562 to a magnitude of 8.578 over its variable period. The smaller the magnitude, the brighter the star. Its variable/pulsating period lasts for 0.9 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 BO Phoenicis Facts and Figures

Visual Facts

Primary / Proper / Traditional NameBO Phoenicis
Alternative NamesHD 1639, HIP 1627, BO Phe
Spectral TypeM4/M5III
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeGiant Star
GalaxyMilky Way
Absolute Magnitude -6.14
Visual / Apparent Magnitude9.09
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)00h 20m 20.16
Declination (Dec.)-57° 09` 48.1
Galactic Latitude-59.46 degrees
Galactic Longitude311.23 degrees
Distance from Earth0.09 Parallax (milliarcseconds)
 36240.37 Light Years
 11111.11 Parsecs
 2,291,814,981.75 Astronomical Units
B-V Index1.45

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Variable Star Details

Variable Star ClassPulsating
Variable Star TypeSemi-Regular Star w
Mean Variability Period in Days0.892
Variable Magnitude Range (Brighter - Dimmer)8.578 - 9.562

Estimated Calculated Facts

Radius (x the Sun)316.59
Effective Temperature4,076 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.

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.

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