The discovery of a new exoplanet qualified as ‘hot Jupiter’, was recently published on the arXiv preprint service, by an international group of astronomers.
It has characteristics similar to those of the largest planet in the solar system.
According to the scientists, to locate the Jovian-sized planet, called TOI-778 bthe spatial photometry method of the Transiting Exoplanet Survey Satellite (TESS) was used.
TESS was designed by NASA to search for transiting extrasolar objects, through the study of regarding 200,000 bright celestial bodies close to the Sun.
They discover a ‘hot Jupiter’ of 1,950 million years
In addition, other methods were used to determine the characteristics of the TOI-778 b, among which the measurements of radial velocities by means of Doppler spectroscopy stand out; as well as photometric observations from Earth.
The TOI-778 b has a radius of 1.37 times the size of Jupiter, but its amount of matter is 2.8 times greater than the mass of the largest planet in the universe; which produces a density of 1.3 grams per cubic centimeter.
The researchers claimed that the exoplanet completes one orbit around its red dwarf every 4.63 days at a distance of 0.06 astronomical units (AU). TOI-778 b has an equilibrium temperature of 1,287 °C.
According to the study, the parent star near TOI-778 b is a rapidly rotating early red dwarf star of spectral type F3V; since it has a rotation speed of almost 40 kilometers per second.
At the same time, the star identified as TOI-778, which is 71% larger and 40% more massive than So; It is 1.95 billion years old and has an effective temperature of between 6,426 °C and 6,526 °C. The red dwarf is located regarding 528 light years away from the Tierra.
