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Using the TESS space telescope, a group of astronomers discovered Neptune’s two sub-planets. This was reported in the arXiv preprint, Ukrinform reports. The new exoplanets TOI-2084 b and
This was reported in the arXiv preprint, Ukrinform reports.
The new exoplanets TOI-2084 b and TOI-4184 b orbit red dwarfs and are 2.4-2.5 times larger than Earth.
The mass of TOI-2084 b is estimated to be 6.74 Earth masses. The planet makes a full rotation around its star in 6.08 days at a distance of 0.05 astronomical units. The average temperature reaches about 254 degrees Celsius. The distance from Earth is estimated at 372 light years, and the age of the star is 7.5 billion years.
The mass of TOI-4184 b is estimated to be 6.6 Earth masses. The orbital period of the planet is 4.9 days. It is located at a distance of 0.034 AU from its star. The average temperature is 140 degrees Celsius. The distance from Earth is 225.6 light years, and the age of the main star reaches 6.7 billion years.
Both planets are classified as sub-Neptunes. It is assumed that they can have water, hydrogen, helium and combinations of these substances.
During the research, the telescope searched for exoplanet candidates in space by varying the brightness of its parent stars. To date, TESS has identified about 6,700 candidate objects. Of these, 360 have been confirmed to be exoplanets.
As reported by Ukrinform, the NASA/ESA Hubble space telescope photographed the extraordinary galaxy cluster eMACS J1353.7+4329.
Source: Ukrinform
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