A star catalogue or star catalog, is an astronomical catalogue that lists stars. In astronomy, many stars are referred to simply by catalogue numbers. There are a great many different star catalogues which have been produced for different purposes over the years, and this article covers only some of the more frequently quoted ones. Star catalogues were compiled by many different ancient people, including the Babylonians, Greeks, Chinese, Persians, and Arabs. They were sometimes accompanied by a star chart for illustration. Most modern catalogues are available in electronic format and can be freely downloaded from space agencies data centres.
Luyten's Star is a red dwarf in the constellation Canis Minor located at a distance of approximately 12.36 light-years from the Sun. It has a visual magnitude of 9.9, making it too faint to be viewed with the unaided eye. It is named after Willem Jacob Luyten, who, in collaboration with Edwin G. Ebbighausen, first determined its high proper motion in 1935.
Willem Jacob Luyten was a Dutch-American astronomer.
Luyten 726-8, also known as Gliese 65, is a binary star system that is one of Earth's nearest neighbors, at about 8.7 light years from Earth in the constellation Cetus. Luyten 726-8B is also known under the variable star designation UV Ceti, being the archetype for the class of flare stars.
EZ Aquarii is a triple star system approximately 11.3 ly (3.5 pc) from the Sun in the constellation Aquarius. It is also known as Luyten 789-6 and Gliese 866 and all three components are M-type red dwarfs. The pair EZ Aquarii AC form a spectroscopic binary with a 3.8-day orbit and a 0.03 AU separation. This pair share an orbit with EZ Aquarii B that has an 823-day period. The A and B components of Luyten 789-6 together emit X-rays.
Growth/differentiation factor 5 is a protein that in humans is encoded by the GDF5 gene.
HL Tau 76 is a variable white dwarf star of the DAV type. It was observed by G. Haro and W. J. Luyten in 1961, and was the first variable white dwarf discovered when, in 1968, Arlo U. Landolt found that it varied in brightness with a period of approximately 749.5 seconds, or 12.5 minutes. Like other DAV white dwarfs, its variability arises from non-radial gravity wave pulsations within itself., § 7. Later observation and analysis has found HL Tau 76 to pulsate in over 40 independent vibrational modes, with periods between 380 seconds and 1390 seconds.
Henri Luyten was a Belgian champion racing cyclist who was a professional rider between 1895 and 1897.
Henry Luyten or Jan Hendrik Luyten was a Dutch-born Belgian painter. He is known for his genre scenes, marines, landscapes, portraits and animal scenes.
Jeroen de Lange is a former Dutch politician. As a member of the Labour Party he was an MP from 25 January 2012 to 19 September 2012. He focused on matters of development aid and trade policy.
G 9-38, also known as EI Cancri and GJ 1116, is a binary star system consisting of two M-type stars. At 17.04 light-years from the Sun, the system is relatively nearby.
Louis Duerloo was a Belgian racing cyclist. He won the Belgian national road race title in 1933 and the Tour of Flanders in 1935.
LHS 1723 is a nearby red dwarf star of spectral type M4.0, located in constellation Eridanus at 17.5 light-years from Earth.}
LP 816-60 is a red dwarf star of spectral type M4, located in constellation Capricornus at 18.6 light-years from Earth.
Gliese 693 is a flare star of spectral type M2 located in the constellation Pavo, 18.95 light-years from Earth.
Gliese 588 is a nearby red dwarf star of spectral type M2.5, located in the constellation Lupus at 19.34 light-years from Earth.
Luyten b is a confirmed exoplanet, likely rocky, orbiting within the habitable zone of the nearby red dwarf Luyten's Star. It is one of the most Earth-like planets ever found and is the third-closest potentially habitable exoplanet known, at a distance of 12.2 light-years. Only Proxima Centauri b and Ross 128 b are closer. Discovered alongside GJ 273c in June 2017, Luyten b is a Super-Earth of around 3 times the mass of Earth and receives only 6% more starlight than Earth, making it one of the best candidates for habitability. In October 2017, the nonprofit organization METI sent a message containing dozens of short musical compositions and a scientific "tutorial" towards the planet in hopes of contacting any potential extraterrestrial civilizations.
Willem Jacob Luyten (1899–1994) was a Dutch-American astronomer.
Luyten or is a Dutch patronymic or matronymic surname. Luit, Luite, Luitje are male and female given names, usually short forms of Luitgard and particularly popular in the Middle Ages due to the female Saint Lutgardis of Tongeren (1182–1246). People with this name include
