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| HIP 91262 | |
|---|---|
| Name | HIP 91262 |
| Epoch | J2000 |
| Ra | 18h 38m 37.1s |
| Dec | +46° 06′ 27″ |
| Constellation | Cygnus |
| App mag v | 8.5 |
| Spectral type | K3V |
| Parallax | 25.3 |
| Dist pc | 39.5 |
| Mass | 0.8 |
| Radius | 0.8 |
| Luminosity | 0.3 |
| Age | 2e9 |
HIP 91262 is a nearby K-type main-sequence star cataloged in the Hipparcos Catalogue and cross-listed in multiple astronomical surveys. It appears in astrometric, photometric, and spectroscopic databases and has been the subject of proper motion and radial velocity studies. The star's modest apparent brightness and proximity make it accessible to medium-aperture observatories and surveys focused on nearby stellar samples.
HIP 91262 is identified primarily by its entry in the Hipparcos Catalogue and is cross-referenced with identifiers from the Henry Draper Catalogue, Gliese Catalogue of Nearby Stars, Two Micron All Sky Survey, and the Gaia data releases. Catalog entries link to archival data from the Simbad database, the Vizier service, and mission catalogs such as 2MASS, WISE, ROSAT, and ASAS-SN. The star appears in photometric compilations like the Johnson (photometric system), the Geneva photometric system, and surveys including SDSS and Pan-STARRS. It has coordinate references tied to the International Celestial Reference Frame used by the European Space Agency and the United States Naval Observatory.
Spectral classification of this object places it among K-type dwarfs comparable to stars studied in works by Annie Jump Cannon and cataloged in the Henry Draper Catalogue. Stellar parameters reported in spectroscopic surveys such as those by HARPS, HIRES, and the Gaia-ESO Survey indicate an effective temperature and metallicity consistent with K3V classifications used in analyses by researchers at institutions like the Harvard–Smithsonian Center for Astrophysics and the Max Planck Institute for Astronomy. Measurements of surface gravity and rotational velocity have been compared with benchmark stars including 61 Cygni A, Epsilon Eridani, and Tau Ceti in papers from groups at Caltech, MIT, and the European Southern Observatory. Models for mass, radius, and luminosity reference evolutionary tracks from the MESA (stellar evolution code) project and isochrones used at Keck Observatory and the Subaru Telescope.
Parallax measurements from Hipparcos and refined by Gaia place the star at a distance comparable to nearby systems like Barnard's Star and Luyten's Star, with proper motion cataloging undertaken by teams at the Royal Observatory, Edinburgh and the United States Naval Observatory as part of long-term astrometric programs. Radial velocity data have been obtained using spectrographs developed at institutions such as ESO, Caltech, and Institute for Astronomy, University of Hawaii; these data feed into membership assessments related to moving groups like the Hyades, the Pleiades moving group, and disk populations analyzed by the Galactic Archaeology community at Max Planck Institute for Astrophysics. Kinematic comparisons have been drawn against established standards like Sirius, Procyon, and Vega in studies of stellar population dynamics at Cambridge University and the University of Geneva.
Searches for companions have been conducted using adaptive optics systems on facilities such as the Very Large Telescope, Keck Observatory, and the Gemini Observatory, and via radial velocity monitoring campaigns like those on HARPS and Lick Observatory. Imaging and astrometric constraints reference surveys including 2MASS, WISE, and the UKIRT Infrared Deep Sky Survey to rule out wide stellar companions similar to systems like Alpha Centauri and Gliese 667. Planet-search programs that include this star relate to exoplanet detections credited to teams behind Kepler, TESS, and radial velocity consortia at Carnegie Institution for Science; none of the major catalogs such as the NASA Exoplanet Archive or the Exoplanet Data Explorer list confirmed planets for this object as of the latest public catalog releases. Limits on low-mass companions reference techniques used in detections of systems like Proxima Centauri b and Gliese 581.
Historical astrometry traces back to ground-based photographic programs archived at institutions like the Royal Greenwich Observatory and plate collections digitized by projects at the Harvard College Observatory and Sloan Digital Sky Survey teams. Modern photometric monitoring includes contributions from survey projects such as ASAS, SuperWASP, and Zwicky Transient Facility for variability analysis, while spectroscopic follow-up has involved instruments developed by groups at ESO, AURA, and the National Optical Astronomy Observatory. Studies citing this star appear in catalogs and papers produced by consortia including Gaia Collaboration, the RAdial Velocity Experiment (RAVE), and the LAMOST survey, with archival data accessible through services maintained by NASA and the European Southern Observatory.
The star is primarily a catalog object referenced in professional and amateur astronomy contexts, appearing in star charts and databases used by organizations such as the International Astronomical Union, the American Astronomical Society, and the Royal Astronomical Society. It is listed in observational guides produced by institutions like Sky & Telescope and Astronomy Magazine and appears in target lists for amateur programs affiliated with societies such as the British Astronomical Association and the American Association of Variable Star Observers. Catalog cross-references tie it to archival resources at the Smithsonian Institution, NASA/IPAC, and university observatories worldwide.
Category:Stars