This exoplanet lasts only 18 hours a year


Researchers at the University of Warwick have discovered an exoplanet that boasts the shortest year – in just 18 hours.

The image is credited to the University of Warwick.

This hot Jupiter-type planet travels around its host star for just 18 hours, making it the shortest year from any planet we know of. However, this may be bad news for the planet itself: the team suspects that this planet is meeting its star.

Too close for comfort

"We are excited to announce the discovery of the NGTS-10b, a Jupiter-sized planet in a very short period of time, which is not so different from our sun. "We are also pleased that the NGTS continues to move across borders in exoplanet science through the discovery of rare classes of exoplanets.

The planet is 1,000 light years away from Earth and then discovered as part of the Next Generation Transit Research (NGTS) exoplanet study using the transit method. Basically, it was observed by analyzing the speed of brightness, which causes it to appear in front of the host star.

It was immediately apparent that this planet was not like most of the others; He would often travel in a stellar way.

"Although a theoretically hot Jupiter with a short orbital period (less than 24 hours) is the easiest to detect due to their large size and frequent transit, their approval is extremely rare. "Currently only seven of the hundreds of hot Jupiter known to have an orbital period of less than one day."

The NGTS-10b is very close to its star, which rotates the star twice from its surface. The team explained that in our solar system it is 27 times closer to it than Mercury is to our sun. This poses a danger to NGTS-10b if it does not destroy the celestial (gravitational) forces of the stars.

Its surface temperature is about 1000 degrees Celsius on average, presumably because they say the host star is only 70 percent as large as the sun's diameter, and its surface is cooler than 1,000 degrees Celsius. The NGTS-10b itself is about one-fifth larger than Jupiter, likely twice as long as it is, and likely stellar.

Massive planets usually form a certain distance from the stars and can then move as long as they are still forming or maturing. This NGTS-10b will be especially useful as the team plans to continue observing it and determine whether it will continue to star – potentially telling how hot Jupiter is.

"They think that these ultra-short planets will move out of their solar systems and eventually feed or experience the star." – explains co-author Dr. David Brown.

"We are very fortunate to catch them in the orbit of this short period, or the processes by which the planet moves to the star are less effective than we can imagine, in which case it can live in this configuration for a longer period."

Newspaper NGTS-10b: Hot Jupiter Still Shortest Discovered Monthly references to the Royal Astronomical Society.