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The exoplanet TOI 1231b is an M3-type star 90 light-years away in the southern constellation Vela. This temperate planet is about the same size as Neptune, landing near M3 Dwarf NLTT 24399.
The discovery of this latest planet orbits its star every 24.3 days. In an alien world that is 3.65 times the radius of Earth and about 15.4 larger.
Stars that are less massive than the Sun and twice as small include NLTT 24399, L 248-27, and 2MASS J10265947-5228099.
Baca Juga: Planet yang Bisa Menyusut, Luar Biasa Aktif Kembali
Exoplanet TOI 1231b looks like Neptune
Although TOI 1231b is located eight times closer to its star than Earth to the Sun, it has almost the same temperature as Earth.
This is because the parent star is less bright and cooler. The statement according to Dr. Diana Dragomir, an astronomer in the Department of Physics and Astronomy at the University of New Mexico.
However, the planet is larger than Earth and slightly smaller in comparison to Neptune. Launching sciencedaily-com, the exoplanet TOI 1231b was detected after astronomers used photometric data from TESS and followed up with observations using the PFS Planet Finder Spectrograph.
On the Magellan Clay telescope at Las Campanas Observatory in Chile. PFS is a very sophisticated instrument that can detect exoplanets by gravitational influence on the parent star.
As the planet orbits its parent, the speed of the star can be measured by varying it periodically. So that it can reveal the existence of the planet, information about its orbit, and mass.
Fact TOI 1231b
Exoplanet TOI 1231b has a temperature of about 330 K or 57 degrees Celsius. Then it becomes one of the most stunning little exoplanets. Because it is accessible for atmospheric research found so far.
TOI 1231b is the only planet that has the same size and temperature range. So planetary observations can determine how common water clouds form around this temperate climate area.
The density of this exoplanet is low, suggesting that its surroundings contain a substantial atmosphere rather than a rocky planet. However, the composition and extent of the atmosphere is unknown.
The atmosphere of the exoplanet TOI 1231b is either hydrogen or large hydrogen-helium. It can even be a denser water vapor. Each will point to a different origin.
Thus, it is possible for astronomers to understand how planets are formed when compared to the planets around our Sun.
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TOI 1231b Pengamatan Observations
The observation strategy by NASA’s TESS divides each hemisphere into 13 sectors. Then survey it for approximately 28 days. This will result in the most comprehensive search for the transiting exoplanet TOI 1231b in the entire sky.
Such an approach proves the ability to detect large and small planets. Its presence around stars, ranging from low-mass dwarf stars to those similar to the Sun.
Red dwarfs are the most common type of star in the Milky Way galaxy. It makes up about 70% of all stars in the galaxy.
New Planet
Jennifer Burt, NASA JPL scientist measured the radius and mass of the exoplanet TOI 1231b. He and astronomers collect data to characterize the host star. These values make it possible to calculate the mass density of the planet.
Then the advantage of an exoplanet orbiting a red dwarf host can measure its mass more easily. Because the ratio of the mass of the planet to the mass of the star is quite large.
When the star is small and less massive, it makes the detection method work better. That’s because planets easily stand out in relation to stars.
Like the shadow on a star, the smaller the star, the smaller its mass. So that more and more planetary effects to detect it.
The exoplanet TOI 1231b is still odd, but one step closer to becoming a neighboring planet when compared to most of the transiting planets detected so far. Because most have hot temperatures in the hundreds or even thousands of degrees.
In previous studies, TOI 1231b was very cold. This planet joins two or three ranks of nearby small exoplanets.
Astronomers have researched it at every opportunity. They used a telescope to monitor the development of the exoplanet TOI 1231b. (R10/HR Online)
Publisher: Jujang
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