GJ 758 B
Encyclopedia
GJ 758 B is a brown dwarf
orbiting the G-type main sequence
star
GJ 758
, located approximately 50 light years away, in the constellation Lyra.
GJ 758 B was detected by direct imaging using the HiCIAO instrument of the Subaru Telescope
. The parameters have subsequently been revised in a follow-up study which also revealed that a putative second substellar object in the system was in fact an unrelated background star.
Brown dwarf
Brown dwarfs are sub-stellar objects which are too low in mass to sustain hydrogen-1 fusion reactions in their cores, which is characteristic of stars on the main sequence. Brown dwarfs have fully convective surfaces and interiors, with no chemical differentiation by depth...
orbiting the G-type main sequence
Main sequence
The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. These color-magnitude plots are known as Hertzsprung–Russell diagrams after their co-developers, Ejnar Hertzsprung and Henry Norris Russell...
star
Star
A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...
GJ 758
GJ 758
GJ 758 is a G-type main sequence star located approximately 50 light years away from the Earth, in the constellation Lyra. At about magnitude 6 it is a little too faint to be seen with the naked eye but can be easily seen through a small telescope or binoculars.- System :In November 2009, a team...
, located approximately 50 light years away, in the constellation Lyra.
GJ 758 B was detected by direct imaging using the HiCIAO instrument of the Subaru Telescope
Subaru (telescope)
Subaru Telescope is the 8.2 metre flagship telescope of the National Astronomical Observatory of Japan, located at the Mauna Kea Observatory on Hawaii. It is named after the open star cluster known in English as the Pleiades...
. The parameters have subsequently been revised in a follow-up study which also revealed that a putative second substellar object in the system was in fact an unrelated background star.