.png) NGTS-3Ab compared to Jupiter | |
| Discovery[1] | |
|---|---|
| Discovered by | Günther et al. |
| Discovery date | 07 May 2018 |
| Transit | |
| Orbital characteristics[1] | |
| 0.023+0.007 −0.005 AU | |
| 1.67±0.00 d | |
| Inclination | 89.56°+0.31° −0.48° |
| 2,457,620.16790±0.00095 d | |
| Semi-amplitude | −404±35 m/s |
| Star | NGTS-3 |
| Physical characteristics | |
| 1.48±0.37 RJ[1] | |
| Mass | 2.38±0.26 MJ[1] |
Meandensity | 0.31+0.41 −0.15 g/cm3[1] |
NGTS-3Ab is a gas giant exoplanet that orbits aG-type star. Its mass is 2.38 Jupiters, it takes 1.7 days to complete one orbit of its star, and is 0.023 AU from its star. Its discovery was announced in 2018.[2] The Jupiter-like planet is discovered by 39 astronomers, mainlyMax Günther,Didier Queloz, Edward Gillen, Laetitia Delrez, andFrancois Bouchy.[1]
NGTS-3Ab was discovered in 2018 by the use of transit method. It is the only planet orbiting around NGTS-3A, aG6V class star, situated in the constellation ofColumba in 2480light years from theSun. The exoplanet orbits its star in about 2 terrestrial days. The orbit is closer to thestar than the internal limit of the habitable zone. It has a low density and can be composed of gas. It has a low Earth similarity index (0.06) and should be very different from our planet.[3]
The discovery of NGTS-3Ab, a hot Jupiter found orbiting a star in a still visually unresolved binary system, was announced in June 2018. The data regarding the exoplanet is based on the data gathered with theNext Generation Transit Survey (NGTS),SPECULOOS, andHARPS, and enhanced by recent advances with the centroiding technique forNGTS.[1]
The planetary system NGTS-3A was detected by a conjointly model multi-colourphotometry,centroids andradial velocity (RV) extraction process. RVcross-correlation functions (CCFs) and study correlations of the bisector inverse span (BIS) are simulated in order to define the characteristics of the exoplanet NGTS-3Ab.[1][4]
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