NGTS-1b is a confirmed

hot Jupiter Hot Jupiters (sometimes called hot Saturns) are a class of gas giant exoplanets that are inferred to be physically similar to Jupiter but that have very short orbital periods (). The close proximity to their stars and high surface-atmosphere tem ...

-sized

extrasolar planet An exoplanet or extrasolar planet is a planet outside the Solar System. The first possible evidence of an exoplanet was noted in 1917 but was not recognized as such. The first confirmation of detection occurred in 1992. A different planet, init ...

orbiting NGTS-1, a red dwarf star about half the mass and radius of the

Sun The Sun is the star at the center of the Solar System. It is a nearly perfect ball of hot plasma, heated to incandescence by nuclear fusion reactions in its core. The Sun radiates this energy mainly as light, ultraviolet, and infrared radi ...

, every 2.65 days. The NGTS-1 system is about 716 light-years from

Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surfa ...

in the Columba constellation.

Discovery

The exoplanet, NGTS-1b, was discovered by the

Next-Generation Transit Survey The Next-Generation Transit Survey (NGTS) is a ground-based robotic search for exoplanets. The facility is located at Paranal Observatory in the Atacama desert in northern Chile, about 2 km from ESO's Very Large Telescope and 0.5 km ...

. Daniel Bayliss, of the

University of Warwick , mottoeng = Mind moves matter , established = , type = Public research university , endowment = £7.0 million (2021) , budget = £698.2 million (2020� ...

, and lead author of the study describing the discovery of NGTS-1b, stated, "The discovery of NGTS-1b was a complete surprise to us—such massive planets were not thought to exist around such small stars—importantly, our challenge now is to find out how common these types of planets are in the Galaxy, and with the new Next-Generation Transit Survey facility we are well-placed to do just that."

Characteristics

Mass, radius and temperature

NGTS-1b is a hot Jupiter-sized gas giant exoplanet that has a mass of 0.812 M_J and a radius of 1.33 R_J, where M_J and R_J are the mass and radius of

Jupiter Jupiter is the fifth planet from the Sun and the largest in the Solar System. It is a gas giant with a mass more than two and a half times that of all the other planets in the Solar System combined, but slightly less than one-thousandth t ...

Host star

The planet orbits an M0.5 dwarf star about half the mass () and radius () of the

Orbit

NGTS-1b orbits about from the host star every 2.6473 Earth-days.

References

External links

The Next Generation Transit Survey Becomes Operational at Paranal
ESO archive, The Messenger 165 – September 2016 {{DEFAULTSORT:NGTS-1b Columba (constellation) Exoplanets discovered in 2017 Hot Jupiters M-type main-sequence stars fr:NGTS-1_b#La_planète