Luyten's Star (GJ 273 Recons) is a red dwarf at a distance of around 12.36 light-years. It is approximately a quarter the mass of the Sun, a tenth of its diameter and a tiny fraction of its luminosity (0.0004 solar luminosities). It is named after Willem Jacob Luyten, who determined its proper motion. The star is in the constellation of Monoceros. In astronomy, an epoch is a moment in time for which celestial coordinates or orbital elements are specified. ... This article or section does not adequately cite its references or sources. ... Monoceros (IPA: , Greek: ) is a faint constellation on the winter night sky, surrounded by Orion to the east, Gemini to the north, Canis Major to the south and Hydra to the west. ... Equatorial Coordinates Right ascension (abbrev. ... In astronomy, declination (abbrev. ... The apparent magnitude (m) of a star, planet or other celestial body is a measure of its apparent brightness as seen by an observer on Earth. ... In astronomy, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics, and subsequently refined in terms of other characteristics. ... In astronomy, the color index is a simple numerical expression that determines the color of an object, which in the case of a star gives its temperature. ... In astronomy, the color index is a simple numerical expression that determines the color of an object, which in the case of a star gives its temperature. ... Most stars are of almost constant luminosity. ... Illustration of the use of optical wavelength interferometry to determine precise positions of stars. ... Radial velocity is the velocity of an object in the direction of the line of sight. ... kilometre per second is an SI derived unit of both speed (scalar) and velocity (vector), signified by the symbol km/s or km s-1. ... The proper motion of a star is the motion of the position of the star in the sky (the change in direction in which we see it, as opposed to the radial velocity) after eliminating the improper motions of the stars, which affect their measured coordinates but are not real... A milliarcsecond (m, mas) , or a thoundsanth of an arcsecond. ... A year (from Old English gēr) is the time between two recurrences of an event related to the orbit of the Earth around the Sun. ... A milliarcsecond (m, mas) , or a thoundsanth of an arcsecond. ... A year (from Old English gēr) is the time between two recurrences of an event related to the orbit of the Earth around the Sun. ... This does not adequately cite its references or sources. ... A milliarcsecond (m, mas) , or a thoundsanth of an arcsecond. ... Distance is a numerical description of how far apart objects are at any given moment in time. ... A light-year or lightyear (symbol: ly) is a unit of measurement of length, specifically the distance light travels in vacuum in one year. ... A parsec is the distance from the Earth to an astronomical object which has a parallax angle of one arcsecond. ... In astronomy, absolute magnitude is the apparent magnitude, m, an object would have if it were at a standard luminosity distance away from us, in the absence of interstellar extinction. ... A star catalogue, or star catalog, is an astronomical catalog that lists stars. ... In astronomy, many stars are referred to simply by catalogue numbers. ... In astronomy, many stars are referred to simply by catalogue numbers. ... In astronomy, many stars are referred to simply by catalogue numbers. ... In astronomy, many stars are referred to simply by catalogue numbers. ... In astronomy, many stars are referred to simply by catalogue numbers. ... In astronomy, many stars are referred to simply by catalogue numbers. ... In astronomy, many stars are referred to simply by catalogue numbers. ... Alexander N. Vyssotsky (born May 23, 1888 in Moscow, Russia; died December 31, 1973 in Winter Park, Florida) was an astronomer. ... The Hipparcos and Tycho Catalogues (Tycho-1) are the primary products of the European Space Agencys astrometric mission, Hipparcos. ... The Research Consortium on Nearby Stars (RECONS) is a project to investigate the stars nearest to the Solar System - those within 10 parsecs (32. ... -1... The Sun (Latin: Sol) is the star at the center of the Solar System. ... Willem Jacob Luyten (March 7, 1899 – November 21, 1994) was a Dutch-American astronomer. ... STAR is an acronym for: Organizations Society of Ticket Agents and Retailers], the self-regulatory body for the entertainment ticket industry in the UK. Society for Telescopy, Astronomy, and Radio, a non-profit New Jersey astronomy club. ... This article or section does not adequately cite its references or sources. ... Monoceros (IPA: , Greek: ) is a faint constellation on the winter night sky, surrounded by Orion to the east, Gemini to the north, Canis Major to the south and Hydra to the west. ...

It has been proposed that Luyten's Star has a substellar companion object, but this has not been proven.

See also

• List of nearest stars

This list of the nearest stars to Earth is ordered by increasing distance out to a maximum of 5 parsecs (16. ...

External links

• SolStation.com: Luyten's Star