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KZ Pavonis, HD199005, HIP103542

KZ Pavonis is a blue to white eclipsing main sequence dwarf star that can be located in the constellation of Pavo. The description is based on the spectral class. The star can not be seen by the naked eye, you need a telescope to see it. The star has an estimated age of 2.30 Billion of Years but could be as young as 2.10 to 2.50 according to Hipparcos.

KZ Pavonis's Alternative Names

HIP103542 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD199005.

KZ Pavonis has alternative name(s) :- , KZ Pav.

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

Location of KZ Pavonis

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 star is compared to the celestial equator and is expressed in degrees. For KZ Pavonis, the location is 20h 58m 40.11 and -70° 25` 19.9 .

Proper Motion of KZ Pavonis

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 14.63 ± 2.32 miliarcseconds/year towards the north and -6.17 ± 3.74 miliarcseconds/year east if we saw them in the horizon. The Radial Velocity, that is the speed at which the star is moving away/towards us is -1.00000 km/s with an error of about 0.60 km/s .

Physical Properties (Colour, Temperature, Age) of KZ Pavonis

KZ Pavonis has a spectral type of F6V. This means the star is a blue to white main sequence dwarf star. The star has a B-V Colour Index of 0.45 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 6,500 Kelvin.

KZ Pavonis Radius has been calculated as being 2.65 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 1,843,059.36.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 3.57. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures. The star's Iron Abundance is -0.15 with an error value of 9.99 Fe/H with the Sun has a value of 1 to put it into context.

The stars age according to Hipparcos data files put the star at an age of about 2.30 Billion years old but could be between 2.10 and 2.50 Billion years old. In comparison, the Sun's age is about 4.6 Billion Years Old.

KZ Pavonis Apparent and Absolute Magnitudes

KZ Pavonis has an apparent magnitude of 7.19 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 2.22 If you used the 2007 Parallax value, you would get an absolute magnitude of 1.57. 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 KZ Pavonis

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 10.12 which gave the calculated distance to KZ Pavonis as 322.30 light years away from Earth or 98.81 parsecs. It would take a spaceship travelling at the speed of light, 322.30 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

In 2007, Hipparcos data was revised with a new parallax of 7.52 which put KZ Pavonis at a distance of 433.73 light years or 132.98 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.

Variable Type of KZ Pavonis

The star is a eclipsing Beta Persei (Algol)/Semi-Detached System (subtype) 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. KZ Pavonis brightness ranges from a magnitude of 7.962 to a magnitude of 7.262 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.

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KZ Pavonis Facts

Visual Facts

Primary / Proper / Traditional NameKZ Pavonis
Alternative NamesHD 199005, HIP 103542, KZ Pav
Spectral TypeF6V
Multiple Star SystemYes
Star Type main sequence Dwarf Star
Colour blue to white
GalaxyMilky Way
Age2.30 Billion Years Old
Age Range2.10 - 2.50 Billion Years Old
Absolute Magnitude2.22 / 1.57
Visual / Apparent Magnitude7.19
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)20h 58m 40.11
Declination (Dec.)-70° 25` 19.9
Galactic Latitude-35.93 degrees
Galactic Longitude323.52 degrees
1997 Distance from Earth10.12 Parallax (milliarcseconds)
 322.30 Light Years
 98.81 Parsecs
2007 Distance from Earth7.52 Parallax (milliarcseconds)
 433.73 Light Years
 132.98 Parsecs
Proper Motion Dec.14.63 ± 2.32 milliarcseconds/year
Proper Motion RA.-6.17 ± 3.74 milliarcseconds/year
B-V Index0.45
Radial Velocity-1.00 ± 0.60 km/s
Iron Abundance-0.15 ± 9.99 Fe/H

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Variable Star Details

Variable Star ClassEclipsing
Variable Star TypeBeta Persei (Algol)/Semi-Detached System (subtype)
Mean Variability Period in Days0.950
Variable Magnitude Range (Brighter - Dimmer)7.262 - 7.962

Estimated Facts

Calculated Effective Temperature6,500 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
199005-70 2812.4A8.100007.0000022.00000F2Yellow/White

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