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WASP-38 Facts

Location of WASP-38

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 object is compared to the celestial equator and is expressed in degrees. For WASP-38, the location is 16h 15m 50.00 and 10° 01` 57.00 .

Physical Properties (Colour, Metallicity, Age, Radius) of WASP-38

WASP-38 Colour and Temperature

WASP-38 has a spectral type of F8. This means the star is a blue to white star.

WASP-38 Radius

WASP-38 has been calculated as 1.37 times bigger than the Sun. The Sun's radius is 695,800km, therefore the star's radius is an estimated 949,767.00.km. If you need the diameter of the star, you just need to multiple the radius by 2.

The star's metallicity is 0.070000, 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 5.00 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-38 Apparent and Absolute Magnitudes

WASP-38 has an apparent magnitude of 9.42 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 4.21 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 WASP-38

The Parallax of the star is given as 9.09 which gives a calculated distance to WASP-38 of 358.78 light years from the Earth or 110.00 parsecs. It would take a spaceship travelling at the speed of light, 358.78 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

The star is roughly 22,688,970.59 Astronomical Units from the Earth/Sun give or take a few. An Astronomical Unit is the distance between Earth and the Sun. The number of A.U. is the number of times that the star is from the Earth compared to the Sun.

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Additional WASP-38 Facts and Figures

Visual Facts

Primary / Proper / Traditional NameWASP-38
Spectral TypeF8
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeStar
ColourYellow - White
GalaxyMilky Way
Age5.00 Billion Years Old
Visual / Apparent Magnitude9.42
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)16h 15m 50.00
Declination (Dec.)10° 01` 57.00
Distance from Earth9.09 Parallax (milliarcseconds)
 358.78 Light Years
 110.00 Parsecs
 22,688,970.59 Astronomical Units

Companions (Multi-Star and Exoplanets) Facts

Exoplanet Count1

Estimated Calculated Facts

Radius (x the Sun)1.37

Sources and Links


List of Extrasolar Planets orbiting WASP-38

NameStatusMass (Jupiters)Orbital Period (Days)EccentricityDiscoveredSemi-Major AxisPeriastronInclination
WASP-38 bConfirmed0.0656.8720.032120100.07551341.00088.690

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