The NameExoWorlds campaign has selected planetary systems for naming composed of planets orbiting stars that could be observed with a small telescope in the latitude of the capital of each country.
In many cases, the system has a link with the assigned country, such as the facilities used and the scientists involved in the discovery of the planet.
Some years of research are required to scrutinize the planetary system in order to confirm the planet’s existence. For this reason, the sample is focused on exoplanets revealed during the first two decades of exoplanet exploration, that is, most of them have been discovered before about 2010.
Most of the host stars are similar to the Sun, with spectral types F, G, or M, with a mix of main sequence stars and evolved giant or subgiant stars. The visual brightnesses range between 6th and 12th magnitude.
All the exoplanets are likely to be gas giants with masses ranging from 0.1 to 5 times the mass of Jupiter. This means that these exoplanets are much more massive than the Earth, with masses range from about 30 to 1600 times the mass of our home planet.
All these systems are composed of single stars with only one known planet orbiting around them. This is so that each country has an equal opportunity to name similar celestial bodies.