New research shows that there may be exceptions to this trend. (EurekAlert) In recent years, a large number of exoplanets have been found around single ‘normal’ stars. Its age is estimated to be between 1.4 and 6.8 billion years. The host TOI-5152 is a G1-type star nearly two times larger than the sun, located about 1,200 light years away from the Earth. The planet's equilibrium temperature was measured to be 688 K. It orbits its parent star every 54.19 days, at a distance of some 0.31 AU from it. TOI-5152 b has a radius of about 1.07 Jupiter radii and is approximately three times more massive than Jupiter. 'The discovery photometry was collected with the space-based mission TESS and follow-up observations were carried out from the ground with the photometric facility NGTS, and the high-resolution spectrographs CORALIE, FEROS, CHIRON, HARPS, and TRES,' the researchers wrote in the paper. The planetary nature of these signals was confirmed by follow-up observations. They report that transit signals have been identified in the light curves of two stars known as TOI-5152 and TOI-5153. It has identified over 5,700 candidate exoplanets (TESS Objects of Interest, or TOI), of which 227 have been confirmed so far.Ī group of astronomers led by Solène Ulmer-Moll of Geneva Observatory in Switzerland has recently confirmed another two TOI planets monitored by TESS. TESS is conducting a survey of about 200,000 of the brightest stars near the sun with the aim of searching for transiting exoplanets.

The finding is reported July 8 on the arXiv pre-print repository.

The newfound alien worlds, designated TOI-5152 b and TOI-5153 b, are the size of Jupiter but about three times more massive than the solar system's biggest planet. Using NASA's Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers has detected two new extrasolar planets.

Astrometry exoplanets