That solar system, which orbits the star K2-239, is located about 160 lightyears away and can be found inside the constellation Sextans (the Sextant, naturally). The star's effective temperature is estimated at 3,450 Kelvin degrees, which is almost one and a half times less than that of the sun.
In a discovery by NASA, it was said that the NASA's Kepler satellite has discovered three Earth-like planets has been found. These planets are orbiting around the star every 5.2, 7.8 and 10.1 days. What is interesting is that this is the first of its kind spectrograph in India as it can measure the mass of a planet going around a star.Prof Abhijit Chakraborty said that the new planet, which is 600 light years away from Earth, was between the size of Saturn and Neptune. The planet is about 27 times the mass of Earth and six times the radius of Earth.
The discovery becomes one big step for India with regard to space exploration.
Researchers at the PRL believes that the discovery of such planets will help them to study the formation of sub-Neptune or sub-Saturn like planets.
"Although the atmospheric temperature of red dwarf stars, around which these planets revolve, is 3,450 and 3,800 Kelvin respectively, nearly half the temperature of our Sun", the researchers said. The scientists are of the view that this high temperature is due to its close proximity with host star. It was estimated to be about seven times nearer compared to the Earth-sun distance.
Based on the planet's physical properties, calculations suggested that heavy elements like ice, silicates and iron comprise 60 to 70 percent of its total mass.
"ISRO said on its website: ".research work will appear in the June issue of the Astronomical Journal owned by the American Astronomical Society and published by IOP Publishing". Only 23 such systems (including the present) are now known to humans with precise measurement of mass and radii, the statement added.
The scientists used a tool they called the PRL Advance Radial-velocity Abu-sky Search or PARAS spectrograph to achieve exact measurements of the EPIC planet.
The scientists observed the target over a time 420 days or about 1.5 years. It is first of its kind spectrograph in the country, which can measure the mass of a planet revolving around a star. Only a tool such as the PARAS can precisely compute Radial Velocity.