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WASP-123

WASP-123 is a white to yellow star that can be located in the constellation of Sagittarius. The description is based on the spectral class. WASP-123 is not part of the constellation but is within the borders of the constellation.

The star can not be seen by the naked eye, you need a telescope to see it. WASP-123 has at least 1 Extrasolar Planets believed to be in orbit around the star.

Location of WASP-123

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 WASP-123, the location is 19h 17m 55.00 and -32° 51` 36.00 .

Physical Properties (Colour, Metallicity, Radius) of WASP-123

WASP-123 has a spectral type of G5. This means the star is a white to yellow star.

WASP-123 has been calculated as 1.30 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 901,756.80.km. If you need the diameter of the star, you just need to multiple the radius by 2.

The star's metallicity is 0.080000, this value is the fractional amount of the star that is not Hydrogen (X) or Helium (Y). An older star would have a high metallicity whereas a new star would have a lower one.

WASP-123 Apparent and Absolute Magnitudes

WASP-123 has an apparent magnitude of 11.10 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. 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.

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WASP-123 Facts

Visual Facts


Primary / Proper / Traditional NameWASP-123
Spectral TypeG5
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeStar
Colour white to yellow
GalaxyMilky Way
ConstellationSagittarius
Metalicity0.0800
Visual / Apparent Magnitude11.10
Naked Eye VisibleRequires a 4.5 - 6 Inch Telescope - Magnitudes
Right Ascension (R.A.)19h 17m 55.00
Declination (Dec.)-32° 51` 36.00

Companions (Multi-Star and Exoplanets) Facts


Exoplanet Count1

Estimated Facts


Radius (x the Sun)1.30

Sources and Links


Sourcehttp://www.exoplanets.eu

List of Extrasolar Planets orbiting WASP-123


NameStatusMass (Jupiters)Orbital Period (Days)EccentricityDiscoveredSemi-Major AxisPeriastronInclination
WASP-123 bConfirmed0.0512.9780.020150.043185.790

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