GJ 1005 explained

GJ 1005 is a system of two red dwarfs, located in constellation Cetus at 19.6 light-years from Earth. The primary star is a M4V class star while the secondary is a class M7V.

The system was observed with the Hubble Space Telescope in the 1990s with its Fine Guidance Sensor.^[1] This data helped determine the mass of each of the components of L722-22/ LHS 1047 / GJ 1005.^[1]

Notes and References

1. Hershey. John L.. Taff. L. G.. 1998-01-01. Hubble Space Telescope Fine Guidance Sensor Astrometry of the Low-Mass Binary L722-22. The Astronomical Journal. en. 116. 3. 1440. 10.1086/300516. 1538-3881. 1998AJ....116.1440H . free.