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Z Arae, HD152064, HIP82695

Primary Facts on Z Arae

  • Z Arae's star type is pulsating variable star that can be located in the constellation of Ara. The description is based on the spectral class.
  • Z Arae is not part of the constellation outline but is within the borders of the constellation.
  • Based on the spectral type (Md) of the star, the star's colour is red .
  • The star can not be seen by the naked eye, you need a telescope to see it.
  • The star is calculated at being about -280.69 light years away from us.

Z Arae's Alternative Names

HIP82695 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD152064.

Z Arae has alternative name(s) :- , Z Ara.

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

Location of Z Arae

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 Z Arae, the location is 16h 54m 13.31 and -56° 15` 54.0 .

Physical Properties (Colour, Temperature) of Z Arae

Z Arae has a spectral type of Md. This means the star is a red variable star. The star has a B-V Colour Index of 0.99 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 4,994 Kelvin.

Z Arae Apparent and Absolute Magnitudes

Z Arae has an apparent magnitude of 11.01 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 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 Z Arae

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as -11.62 which gave the calculated distance to Z Arae as -280.69 light years away from Earth or -86.06 parsecs. It would take a spaceship travelling at the speed of light, -280.69 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

Variable Type of Z Arae

The star is a pulsating Omicron Ceti 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. Z Arae brightness ranges from a magnitude of 12.775 to a magnitude of 9.318 over its variable period. The smaller the magnitude, the brighter the star. Its variable/pulsating period lasts for 294.3 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 Z Arae Facts and Figures

Visual Facts

Primary / Proper / Traditional NameZ Arae
Alternative NamesHD 152064, HIP 82695, Z Ara
Spectral TypeMd
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeVariable Star
Colour red
GalaxyMilky Way
Visual / Apparent Magnitude11.01
Naked Eye VisibleRequires a 4.5 - 6 Inch Telescope - Magnitudes
Right Ascension (R.A.)16h 54m 13.31
Declination (Dec.)-56° 15` 54.0
Galactic Latitude-7.89 degrees
Galactic Longitude332.20 degrees
Distance from Earth-11.62 Parallax (milliarcseconds)
 -280.69 Light Years
 -86.06 Parsecs
 -17,751,025.53 Astronomical Units
B-V Index0.99

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Variable Star Details

Variable Star ClassPulsating
Variable Star TypeOmicron Ceti
Mean Variability Period in Days294.300
Variable Magnitude Range (Brighter - Dimmer)9.318 - 12.775

Estimated Facts

Calculated Effective Temperature4,994 Kelvin

Sources and Links

SIMBAD SourceLink

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