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WASP-99

Primary Facts on WASP-99

  • WASP-99's star type is star that can be located in the constellation of Eridanus. The description is based on the spectral class.
  • WASP-99 is not part of the constellation outline but is within the borders of the constellation.
  • Based on the spectral type (F8) of the star, the star's colour is blue to white .
  • The star can not be seen by the naked eye, you need a telescope to see it.
  • It is calculated at being 1.400 Billion Years old. This information comes from ExoPlanet.
  • WASP-99 has at least 1 Extrasolar Planets believed to be in orbit around the star.

Location of WASP-99

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-99, the location is 02h 39m 34.99 and -50° 00` 29.16 .

Physical Properties (Colour, Metallicity, Age, Radius) of WASP-99

WASP-99 has a spectral type of F8. This means the star is a blue to white star.

WASP-99 has been calculated as 1.76 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 1,224,608.00.km. If you need the diameter of the star, you just need to multiple the radius by 2.

The star's metallicity is 0.150000, 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.

The star is believed to be about 1.40 Billion years old. To put in context, the Sun is believed to be about five billion years old and the Universe is about 13.8 billion years old.

WASP-99 Apparent and Absolute Magnitudes

WASP-99 has an apparent magnitude of 9.50 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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Additional WASP-99 Facts and Figures

Visual Facts


Primary / Proper / Traditional NameWASP-99
Spectral TypeF8
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeStar
Colour blue to white
GalaxyMilky Way
ConstellationEridanus
Age1.40 Billion Years Old
Metalicity0.1500
Visual / Apparent Magnitude9.50
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)02h 39m 34.99
Declination (Dec.)-50° 00` 29.16

Companions (Multi-Star and Exoplanets) Facts


Exoplanet Count1

Estimated Facts


Radius (x the Sun)1.76

Sources and Links


Sourcehttp://www.exoplanets.eu

List of Extrasolar Planets orbiting WASP-99


NameStatusMass (Jupiters)Orbital Period (Days)EccentricityDiscoveredSemi-Major AxisPeriastronInclination
WASP-99 bConfirmed0.135.7530.020130.071788.800

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