Astronomy:GJ 1128

From HandWiki
Short description: Star in the southern constellation of Carina
GJ 1128
Observation data
Equinox J2000.0]] (ICRS)
Constellation Carina[1]
Right ascension  09h 42m 46.3430s[2]
Declination −68° 53′ 06.009″[2]
Apparent magnitude (V) 12.78[3]
Characteristics
Evolutionary stage main sequence[3]
Spectral type M4.0V[4]
Astrometry
Proper motion (μ) RA: −75.828[2] mas/yr
Dec.: +1128.849[2] mas/yr
Parallax (π)153.7593 ± 0.0249[2] mas
Distance21.212 ± 0.003 ly
(6.504 ± 0.001 pc)
Absolute magnitude (MV)13.715[3]
Details
Mass0.175[5] M☉
Radius0.190[3] R☉
Luminosity0.0043[6] L☉
Surface gravity (log g)5.03[6] cgs
Temperature3,144[3] K
Metallicity [Fe/H]0.09[3] dex
Rotation157.4 days[7]
Other designations
GJ 1128[8], L 100-115, LFT 680, LHS 271[9], LTT 3572, NLTT 22480[10], GSC 09209-00444, 2MASS J09424635-6853060, DENIS J094246.3-685309
Database references
SIMBADdata

GJ 1128 is a star in the constellation Carina. It is somewhat nearby, located about 21.212 light-years away from Earth.

GJ 1128 is a red dwarf star with a mere 0.43% of the solar luminosity,[6] and an estimated mass 17.5% of the mass of the Sun.[5] It has 19% of the solar radius and its effective temperature is around 3,100 K, values comparable to the Barnard's Star.[3] It is a long-term variable with the prominent 5-year starspot cycle comparable to that of Sun's.[11]

The discovery designation of GJ 1128 is L 100-115,[12] from a 1944 catalogue of high-proper-motion stars.[13] It was then included in the 1979 Gliese–Jahreiss catalogue of nearby stars with an estimated parallax of 125 mas.[14] The small distance from Sun to the GJ 1128 was confirmed by later direct measurements of its parallax.[11]

See also

References

  1. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific 99 (617): 695. doi:10.1086/132034. Bibcode: 1987PASP...99..695R  Constellation record for this object at VizieR.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940  Gaia DR3 record for this source at VizieR.
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 Houdebine, Éric R.; Mullan, D. J.; Doyle, J. G.; de la Vieuville, Geoffroy; Butler, C. J.; Paletou, F. (2019). "The Mass-Activity Relationships in M and K Dwarfs. I. Stellar Parameters of Our Sample of M and K Dwarfs". The Astronomical Journal 158 (2): 56. doi:10.3847/1538-3881/ab23fe. Bibcode: 2019AJ....158...56H. 
  4. ↑ Lurie, John C.; Henry, Todd J.; Jao, Wei-Chun; Quinn, Samuel N.; Winters, Jennifer G.; Ianna, Philip A.; Koerner, David W.; Riedel, Adric R. et al. (2014). "The Solar Neighborhood. XXXIV. a Search for Planets Orbiting Nearby M Dwarfs Using Astrometry". The Astronomical Journal 148 (5): 91. doi:10.1088/0004-6256/148/5/91. Bibcode: 2014AJ....148...91L. 
  5. ↑ 5.0 5.1 Klüter, J.; Bastian, U.; Wambsganss, J. (2020). "Expectations on mass determination using astrometric microlensing by Gaia". Astronomy and Astrophysics 640: A83. doi:10.1051/0004-6361/201937061. Bibcode: 2020A&A...640A..83K. 
  6. ↑ 6.0 6.1 6.2 Stassun, Keivan G.; Oelkers, Ryan J.; Pepper, Joshua; Paegert, Martin; De Lee, Nathan; Torres, Guillermo; Latham, David W.; Charpinet, Stéphane et al. (2018). "The TESS Input Catalog and Candidate Target List". The Astronomical Journal 156 (3): 102. doi:10.3847/1538-3881/aad050. Bibcode: 2018AJ....156..102S. 
  7. ↑ Newton, Elisabeth R.; Mondrik, Nicholas; Irwin, Jonathan; Winters, Jennifer G.; Charbonneau, David (2018). "New Rotation Period Measurements for M Dwarfs in the Southern Hemisphere: An Abundance of Slowly Rotating, Fully Convective Stars". The Astronomical Journal 156 (5): 217. doi:10.3847/1538-3881/aad73b. Bibcode: 2018AJ....156..217N. 
  8. ↑ "GJ 1128". Preliminary Version of the Third Catalogue of Nearby Stars. 1991. http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-source=V/70A&Name=GJ%201128. 
  9. ↑ Luyten, Willem Jacob (1979). "LHS 271". LHS Catalogue, 2nd Edition. http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-source=I/87B&LHS=271. 
  10. ↑ Luyten, Willem Jacob (1979). "NLTT 22480". NLTT Catalogue. http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-source=I/98A&recno=22480. 
  11. ↑ 11.0 11.1 Henry, Todd J.; Jao, Wei-Chun; Winters, Jennifer G.; Dieterich, Sergio B.; Finch, Charlie T.; Ianna, Philip A.; Riedel, Adric R.; Silverstein, Michele L. et al. (2018). "The Solar Neighborhood XLIV: RECONS Discoveries within 10 parsecs". The Astronomical Journal 155 (6): 265. doi:10.3847/1538-3881/aac262. Bibcode: 2018AJ....155..265H. 
  12. ↑ Kirkpatrick, J. Davy; Gelino, Christopher R.; Cushing, Michael C.; Mace, Gregory N.; Griffith, Roger L.; Skrutskie, Michael F.; Marsh, Kenneth A.; Wright, Edward L. et al. (2012). "Further Defining Spectral Type "Y" and Exploring the Low-mass End of the Field Brown Dwarf Mass Function". The Astrophysical Journal 753 (2): 156. doi:10.1088/0004-637X/753/2/156. Bibcode: 2012ApJ...753..156K. 
  13. ↑ "Dictionary of Nomenclature of Celestial Objects. L entry.". Centre de Données astronomiques de Strasbourg. http://cds.u-strasbg.fr/cgi-bin/Dic-Simbad?L. 
  14. ↑ Gliese, W.; Jahreiß, H. (1979). "Nearby Star Data Published 1969-1978". Astronomy and Astrophysics Supplement Series 38: 423. Bibcode: 1979A&AS...38..423G. 



Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:GJ_1128&oldid=3916597"