Elle serait située à une distance d'environ 12 années-lumière de la Terre dans la direction de la constellation méridionale de la Baleine (Cetus en latin). This gives it roughly four times Earth's volume. The classification G refers to the surface temperature of a star, G-type stars have similar surface temperatures to the sun. So you want to estimate surface gravity on a fictional planet?

One of the things I had to do as part of the rework of my novel The Tau Ceti Diversion, is to try and work out the surface gravity of my fictional planets.

The planet is located 591,001 km from Tau Ceti e. Slightly smaller than Earth, Tau Ceti eb has a surface gravity of 0.77 g ⊕, about 77% of that on Earth, and about 233% of that on Archavia. There are 13 planets, five were discovered on December 19, 2012. Tau Ceti [ˌtaʊ ˈʦeːti] (τ Ceti, abgekürzt: τ Cet) ist ein 11,9 Lichtjahre entfernter gelber Hauptreihenstern (Spektralklasse G8) im Sternbild Walfisch. Based on the spectral type (G8V) of the star, the star's colour is yellow . Von der Sonne aus gesehen ist er nach Alpha Centauri A der zweitnächste sonnenähnliche Stern. Tau Ceti is only 12 light years from Earth in the constellation of Cetus. Tau Ceti, like our Sun, is a G-type main sequence star, but it is fainter, smaller, cooler than our Sun.

Der Stern hat keinen traditionellen Eigennamen. Its discovery was announced in … The OP said that Tau Ceti e has a radius 1.6 times that of Earth. Tau Ceti Facts. Tau Ceti is a g8v main sequence star that can be located in the constellation of Cetus. This gives it roughly four times Earth's volume.

Easy! It is the fourth planet of the five planet system in distance to its star. Its mass is 3.93 Earths, it takes 162.9 days to complete one orbit of its star, and is 0.538 AU from its star. Tau Ceti eb. Since the mass is also about four times that of Earth, the bulk density of Tau Ceti e could be similar to that of Earth. In the night sky Tau Ceti is visible to the naked eye.

Tau Ceti e ESI: 0.78 Discovered in 2012, this unconfirmed exoplanet candidate is one of the most potentially habitable planets being about four times as massive as Earth, making it a “Super Earth”. Since December 2012 Tau Ceti has become even more appealing, thanks to evidence of possibly five planets orbiting it, with two of these - Tau Ceti e and f - potentially residing in the habitable zone. Tau Ceti e is the planet in the habitable zone, and its year is about half as long as ours.