Gliese 1002 Exoplanet System

Two rocky planets in the habitable zone of a nearby red dwarf // Gliese 1002 (GJ 1002) is a red dwarf of spectral type M5. 5V located 15. 8 light-years away in the constellation Cetus. The star has a mass of 0. 12 solar masses and a radius of 0. 137 solar radii, with a surface temperature of 3024 K (2751 °C) and a luminosity of only 0. 14% that of the Sun. It is currently a magnetically quiet star, exhibiting low flare activity and a slow rotation period of 126 days, consistent with a relatively evolved and stable late-type M dwarf. The system hosts two confirmed exoplanets discovered in 2022. Both planets are likely near-Earth-mass objects and represent some of the closest known terrestrial candidates near or in the habitable zone of their star. GJ 1002 b is an inner planet with a minimum mass of 1. 08 Earth masses and an orbital period of 10. 35 days at 0. 0457 AU. It receives approximately 0. 67 times the incident stellar flux of Earth and likely lies near the inner edge of the habitable zone, depending on atmospheric composition and albedo. Under Earth-like assumptions, it may be slightly cooler than Earth, but still within a regime where liquid water could persist with the aid of a suitable greenhouse effect. GJ 1002 c has a minimum mass of 1. 36 Earth masses and orbits every 21. 2 days at 0. 074 AU. It receives 0. 26 times Earth's flux and is likely near or beyond the outer edge of the classical habitable zone, implying a colder baseline equilibrium temperature. Its potential habitability would likely require a significantly enhanced greenhouse effect or subsurface/ice-covered ocean environments. GJ 1002 is often highlighted as one of the most promising nearby systems for studying terrestrial exoplanets in the habitable zone. However, the true habitability of both worlds remains uncertain due to unknown atmospheric composition and requires follow-up studies from next-generation observatories to resolve their properties further. This simulation replicates the GJ 1002 system