LHS 2090
  LHS 2090 Location of LHS 2090 in the constellation Cancer | |
| Observation data Epoch J2000.0 Equinox ICRS | |
|---|---|
| Constellation | Cancer |
| Right ascension | 09h 00m 23.546s |
| Declination | +21° 50′ 04.90″ |
| Apparent magnitude (V) | 16.11 |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | M6.5 V |
| Apparent magnitude (J) | 9.44 |
| Astrometry | |
| Radial velocity (Rv) | +23.3 km/s |
| Proper motion (μ) | RA: −514.942 mas/yr Dec.: −592.253 mas/yr |
| Parallax (π) | 157.2686±0.0535 mas |
| Distance | 20.739 ± 0.007 ly (6.359 ± 0.002 pc) |
| Details | |
| Mass | 0.09 M☉ |
| Radius | 0.12 R☉ |
| Luminosity | 0.00082 L☉ |
| Temperature | 2680±24 K |
| Metallicity [Fe/H] | −0.06±0.17 dex |
| Rotation | 0.439 d |
| Rotational velocity (v sin i) | 15.0±1.0 km/s |
| Other designations | |
| LHS 2090, LP 368-128, NLTT 20726, 2MASS J09002359+2150054 | |
| Database references | |
| SIMBAD | data |
LHS 2090 is a red dwarf star of spectral type M6.5V, located in constellation Cancer at 20.74 light-years (6.359 parsecs) from Earth.
The star was identified to be a nearby red dwarf at distance of 6.359 parsecs (20.74 ly) away from the sun in 2001, and its parallax was first measured in 2006. As typical for very cool red dwarfs, its spectrum is dominated by molecular water absorption. The stellar metallicity is similar to that of the Sun.
Radial velocity measurements did not yield any detection of a stellar companion or giant planet in orbit around LHS 2090, as of 2018.
References
- ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
- 1 2 3 4 5 6 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- 1 2 3 4 5 Henry, Todd J.; Jao, Wei-Chun; Winters, Jennifer G.; Dieterich, Sergio B.; Finch, Charlie T.; Ianna, Philip A.; Riedel, Adric R.; Silverstein, Michele L.; Subasavage, John P.; Vrijmoet, Eliot Halley (2018). "The Solar Neighborhood XLIV: RECONS Discoveries within 10 parsecs". The Astronomical Journal. 155 (6): 265. arXiv:1804.07377. Bibcode:2018AJ....155..265H. doi:10.3847/1538-3881/aac262. S2CID 53983430.
- ↑ Alonso-Floriano, F. J.; Morales, J. C.; Caballero, J. A.; Montes, D.; Klutsch, A.; Mundt, R.; Cortés-Contreras, M.; Ribas, I.; Reiners, Ansgar; Amado, P. J.; Quirrenbach, A.; Jeffers, S. V. (2015). "CARMENES input catalogue of M dwarfs". Astronomy & Astrophysics. 577: A128. arXiv:1502.07580. Bibcode:2015A&A...577A.128A. doi:10.1051/0004-6361/201525803. S2CID 53135130.
- ↑ Davison, Cassy L.; White, R. J.; Henry, T. J.; Riedel, A. R.; Jao, W-C.; Bailey Iii, J. I.; Quinn, S. N.; Cantrell, J. R.; Subasavage, J. P.; Winters, J. G. (2015). "A 3D Search for Companions to 12 Nearby M Dwarfs". The Astronomical Journal. 149 (3): 106. arXiv:1501.05012. Bibcode:2015AJ....149..106D. doi:10.1088/0004-6256/149/3/106. S2CID 9719725.
- 1 2 3 Fouqué, Pascal; et al. (April 2018). "SPIRou Input Catalogue: global properties of 440 M dwarfs observed with ESPaDOnS at CFHT". Monthly Notices of the Royal Astronomical Society. 475 (2): 1960–1986. arXiv:1712.04490. Bibcode:2018MNRAS.475.1960F. doi:10.1093/mnras/stx3246.
- 1 2 Dieterich, Sergio B.; Henry, Todd J.; Jao, Wei-Chun; Winters, Jennifer G.; Hosey, Altonio D.; Riedel, Adric R.; Subasavage, John P. (2013). "The Solar Neighborhood. Xxxii. The Hydrogen Burning Limit". The Astronomical Journal. 147 (5): 94. arXiv:1312.1736. doi:10.1088/0004-6256/147/5/94. S2CID 21036959.
- 1 2 Rojas-Ayala, Bárbara; Covey, Kevin R.; Muirhead, Philip S.; Lloyd, James P. (2011). "Metallicity and Temperature Indicators in M Dwarfk-Band Spectra: Testing New and Updated Calibrations with Observations of 133 Solar Neighborhood M Dwarfs". The Astrophysical Journal. 748 (2): 93. arXiv:1112.4567. doi:10.1088/0004-637X/748/2/93. S2CID 41902340.
- ↑ "LHS 2090". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 29 January 2018.
- ↑ Scholz, R.-D.; Meusinger, H.; Jahreiß, H. (2001). "Search for nearby stars among proper motion stars selected by optical-to-infrared photometry". Astronomy & Astrophysics. 374 (2): L12–L15. arXiv:astro-ph/0106222. doi:10.1051/0004-6361:20010811. S2CID 8488435.
- ↑ Henry, Todd J.; Jao, Wei-Chun; Subasavage, John P.; Beaulieu, Thomas D.; Ianna, Philip A.; Costa, Edgardo; Méndez, René A. (2006). "The Solar Neighborhood. XVII. Parallax Results from the CTIOPI 0.9 m Program: 20 New Members of the RECONS 10 Parsec Sample". The Astronomical Journal. 132 (6): 2360. arXiv:astro-ph/0608230. Bibcode:2006AJ....132.2360H. doi:10.1086/508233.
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