07/19 01:44
Using NASA’s Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers has discovered two new exoplanets.
The newly discovered alien worlds, called TOI-5152 b and TOI-5153 b, are three times larger than the largest planet in the solar system.
The planet’s equilibrium temperature has been measured to be 688 K, and the host TOI-5152 is a G1-type star nearly twice as large as the Sun, located about 1,200 light-years from Earth. Its age is estimated between 1.4 and 6.8 billion years.
TOI-5153 b has a mass of 3.26 that of Jupiter, and its radius has been estimated to be 1.06 that of Jupiter. The orbital period of this exoplanet has been measured at 20.33 days and the distance to the host is approximately 0.16 AU.
Astronomers calculated that the equilibrium temperature of TOI-5153 b is at 906 K, and the host star is of spectral type F8. It is about 40% older than the Sun and is assumed to be 5.4 billion years old. The distance to this planetary system is about 1270 light years.
Therefore, TOI-5152 b and TOI-5153 b are warm and massive alien worlds the mass of Jupiter. The astronomers noted that both are rich in minerals and that their content of heavy elements corresponds to the relationship of the mineral mass of gas giants.
Given that the two planets orbit moderately bright stars, the paper’s authors added that they are ideal targets for additional observations.
“Both warm Jupiters orbit moderately bright host stars, making these objects valuable targets for follow-up studies of the planet’s atmosphere and measurement of the system’s rotation angle,” the researchers concluded.