New hot Jupiter Exoplanet discovered

(ORDO NEWS) — An international team of astronomers has discovered a new hot Jupiter class exoplanet using the TESS space observatory.

The gas giant is nearly three times as massive as Jupiter in the Solar System and orbits the rapidly spinning star TOI-778.

The newly discovered exoplanet was designated TOI-778 b. It has a radius of 1.37 that of Jupiter and is about 2.8 times as massive as Jupiter.

TOI-778 b orbits its parent star every 4.63 days at a distance of about 0.06 astronomical units from it.

The equilibrium temperature of the planet, excluding the influence of the atmosphere and the heat of the interior, is estimated at about 1561 kelvin.

Hot Jupiters have high surface temperatures because they are very close to their parent stars. TOI-778 is about 71 percent larger and 40 percent more massive than the Sun.

The researchers estimate that TOI-778 is about 1.95 billion years old and has an effective temperature of about 6700-6800 kelvins.

The distance to the star has been measured at about 528 light years. It rotates around its axis at a speed of about 40 kilometers per second.


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