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WASP-157

WASP-157 is a white to yellow main sequence dwarf star that can be located in the constellation of Virgo. The description is based on the spectral class. WASP-157 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. It is calculated at being 1.000 Billion Years old. This information comes from ExoPlanet. WASP-157 has at least 1 Extrasolar Planets believed to be in orbit around the star.

Location of WASP-157

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-157, the location is 13h 26m 37.00 and -08° 19` 03.00 .

Physical Properties (Colour, Metallicity, Age, Radius) of WASP-157

WASP-157 has a spectral type of G2V. This means the star is a white to yellow main sequence dwarf star.

WASP-157 has been calculated as 1.11 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 772,338.00.km. If you need the diameter of the star, you just need to multiple the radius by 2.

The star's metallicity is 0.090000, 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 1.00 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-157 Apparent and Absolute Magnitudes

WASP-157 has an apparent magnitude of 12.90 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-157 Facts

Visual Facts


Primary / Proper / Traditional NameWASP-157
Spectral Type G2V
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star Type main sequence Dwarf Star
Colour white to yellow
GalaxyMilky Way
ConstellationVirgo
Age1.00 Billion Years Old
Metalicity0.0900
Visual / Apparent Magnitude12.90
Naked Eye VisibleRequires a 4.5 - 6 Inch Telescope - Magnitudes
Right Ascension (R.A.)13h 26m 37.00
Declination (Dec.)-08° 19` 03.00

Companions (Multi-Star and Exoplanets) Facts


Exoplanet Count1

Estimated Facts


Radius (x the Sun)1.11

Sources and Links


Sourcehttp://www.exoplanets.eu

List of Extrasolar Planets orbiting WASP-157


NameStatusMass (Jupiters)Orbital Period (Days)EccentricityDiscoveredSemi-Major AxisPeriastronInclination
WASP-157 bConfirmed0.09373.9520.020160.052985.190

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