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| Luyten's Star | |
|---|---|
| Name | Luyten's Star |
| Other names | GJ 273; HD 95735 |
| Constellation | Canis Minor |
| Epoch | J2000 |
| Ra | 07h 27m 24s |
| Dec | +05° 13′ 33″ |
| App mag v | 9.87 |
| Stellar class | M3.5Ve |
| Parallax | 259.08 mas |
| Distance | 3.8 ly (1.17 pc) |
| Mass | 0.29 M☉ |
| Radius | 0.35 R☉ |
| Luminosity | 0.008 L☉ |
| Names | Gliese 273; HD 95735; HIP 54035; LHS 34 |
Luyten's Star is a nearby red dwarf in the constellation Canis Minor notable for its proximity, high proper motion, and a small system of planets that have been targets for habitability studies and observational campaigns. It has been studied by astronomers using ground-based observatories, space telescopes, and astrometric catalogs, appearing in surveys and missions that include stellar catalogs, exoplanet searches, and astrobiology initiatives. Its scientific relevance connects to nearby star catalogs, planetary detection techniques, and interest from missions and institutions concerned with nearby planetary systems.
The star appears in catalogs compiled by astronomers such as Willem Jacob Luyten, Wilhelm Gliese, Friedrich Bessel, Henrietta Swan Leavitt, and later surveys from institutions like the Harvard College Observatory, Royal Greenwich Observatory, Yerkes Observatory, and the Mount Wilson Observatory. Historical catalogs including the Bonner Durchmusterung and the Henry Draper Catalogue assigned identifiers then cross-referenced by projects like the Gliese Catalogue of Nearby Stars, the Hipparcos Catalogue, and the Two Micron All-Sky Survey. Modern designations were consolidated by efforts at the SIMBAD Astronomical Database and the Gaia mission teams. The naming reflects contributions from astronomers, observatories, and publications such as the Astrophysical Journal and the Monthly Notices of the Royal Astronomical Society.
Spectral classification work by groups at institutions like the Cerro Tololo Inter-American Observatory, European Southern Observatory, Keck Observatory, and the National Radio Astronomy Observatory classifies it as an M3.5Ve dwarf; analyses reference datasets from the Sloan Digital Sky Survey, the Infrared Space Observatory, and the Spitzer Space Telescope. Stellar models developed at centers including the Harvard-Smithsonian Center for Astrophysics, Max Planck Institute for Astronomy, Princeton University, and the California Institute of Technology estimate its mass and radius; metallicity and activity studies cite research from the University of Geneva, University of California, Berkeley, University of Arizona, and the Carnegie Institution for Science. Chromospheric activity and flare monitoring have involved teams from SETI Institute, NASA Goddard Space Flight Center, Jet Propulsion Laboratory, and the European Space Agency.
Proper motion measurements derive from work by Willem Jacob Luyten and later refined by the Hipparcos and Gaia missions, with astrometric reductions performed by groups at European Southern Observatory and Space Telescope Science Institute. Radial velocity programs at Keck Observatory, European Southern Observatory (ESO), Anglo-Australian Telescope, and La Silla Observatory provided kinematic data used in studies of local stellar kinematics by scientists at University of Cambridge, University of Oxford, University of Edinburgh, and Max Planck Institute for Astronomy. Its proximity places it among nearby stars cataloged alongside objects in compilations such as the RECONS list and the Gliese–Jahreiß Catalog.
Detection of planets around the star was reported by teams using radial velocity instruments including HARPS, HIRES, and the ESO 3.6 m telescope instruments; follow-up observations involved facilities such as Keck Observatory, Large Binocular Telescope, Subaru Telescope, and the Very Large Telescope. The planets have been discussed in publications by researchers affiliated with the Institute for Astronomy (University of Hawaii), University of Geneva, University of California, and the University of Montreal. Comparisons and context reference exoplanet catalogs maintained by the NASA Exoplanet Archive, the Exoplanet Encyclopaedia, and survey missions like Kepler and TESS. The planetary architecture invites comparison with systems studied by teams at Carnegie Institution for Science and the Instituto de Astrofísica de Canarias.
Habitability assessments draw on interdisciplinary research from the SETI Institute, NASA Ames Research Center, European Southern Observatory, and astrobiology groups at University College London, University of Arizona, MIT, and Stanford University. Climate modeling references work from the National Center for Atmospheric Research, the Max Planck Institute for Solar System Research, and the Laboratory for Atmospheric and Space Physics while biosignature detection strategies align with programs at NASA Jet Propulsion Laboratory, European Southern Observatory, Space Telescope Science Institute, and the Breakthrough Initiatives.
The star has been included in surveys and missions conducted by Hipparcos, Gaia, 2MASS, WISE, Spitzer, Kepler, and TESS and observed by facilities including Palomar Observatory, Kitt Peak National Observatory, Arecibo Observatory (historical), and Green Bank Telescope. Data products and analyses have appeared in journals like the Astrophysical Journal, Astronomy & Astrophysics, and the Monthly Notices of the Royal Astronomical Society, with contributions from researchers affiliated with European Southern Observatory, Harvard-Smithsonian Center for Astrophysics, Max Planck Institute for Astronomy, and the National Radio Astronomy Observatory.
The star features in discussions by organizations such as SETI Institute, Breakthrough Listen, International Astronomical Union, and educational outreach through institutions like the Smithsonian Institution, American Museum of Natural History, Royal Observatory Greenwich, and Planetary Society. It figures in catalogs and lists compiled by RECONS, Gliese Catalogue, and the NASA Exoplanet Science Institute and is cited in public communication by agencies including NASA, ESA, and national observatories. Its study influences research programs at universities and institutes such as Caltech, MIT, Cambridge University, and Max Planck Institute for Astronomy.
Category:Red dwarf stars