LHS 288

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LHS 288
Carina constellation map.svg
Red pog.png
LHS 288
Location of LHS 288 in the constellation Carina

Observation data
Epoch J2000       Equinox J2000
Constellation Carina
Right ascension 10h 44m 21.23291s [1]
Declination −61° 12′ 35.2754″ [1]
Apparent magnitude  (V)13.92 [2]
Characteristics
Spectral type M5V [3] (M4 [4] )
B−V color index 1.82 [2]
V−R color index 1.59 [4]
R−I color index 2.02 [4]
J−H color index 0.442 [4]
J−K color index 0.764 [4]
Astrometry
Radial velocity (Rv)155.61±1.27 [1] km/s
Proper motion (μ)RA: −346.208 mas/yr [1]
Dec.: 1611.100 mas/yr [1]
Parallax (π)206.9698±0.0448  mas [1]
Distance 15.759 ± 0.003  ly
(4.832 ± 0.001  pc)
Absolute magnitude  (MV)15.5 [5]
Details
Mass 0.106 [6]   M☉
Radius 0.158 [6]   R☉
Luminosity 0.00119 [6]   L☉
Surface gravity (log g)5.10 [7]   cgs
Temperature 3,297 [7]   K
Metallicity [Fe/H]−2.44 [1]   dex
Other designations
GJ  3618, L  143-23, LFT  734, LHS  288, LTT  3946, PLX  2511.01 [4]
Database references
SIMBAD data

LHS 288 (Luyten 143-23) is a red dwarf star around 15.8 light-years from the Sun, the closest in the constellation Carina [8] (near Eta Carinae). It is far too faint to be seen with the unaided eye, with an apparent magnitude of 13.92.

Contents

A 2007 study suggested that LHS 288 may harbour a planet with a mass of 2.4 MJ based on astrometric observations, but the possibility that it passed over an undetected faint star, which could mimic the astrometric variation caused by a planet, could not be eliminated. [9] [10]

See also

References

  1. 1 2 3 4 5 6 7 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.
  2. 1 2 "Nearby Stars, Preliminary 3rd Version (Gliese+ 1991)".
  3. ↑ Henry, T. 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" (PDF). The Astronomical Journal . 132 (6): 2360–2371. arXiv: astro-ph/0608230 . Bibcode:2006AJ....132.2360H. doi:10.1086/508233. S2CID   15002841.
  4. 1 2 3 4 5 6 "GJ 3618". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 3 Jun 2017.
  5. ↑ 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. arXiv: 1905.07921 . Bibcode:2019AJ....158...56H. doi: 10.3847/1538-3881/ab23fe .
  6. 1 2 3 Ment, Kristo; Charbonneau, David (2023). "The Occurrence Rate of Terrestrial Planets Orbiting Nearby Mid-to-late M Dwarfs from TESS Sectors 1-42". The Astronomical Journal. 165 (6): 265. arXiv: 2302.04242 . Bibcode:2023AJ....165..265M. doi: 10.3847/1538-3881/acd175 .
  7. 1 2 Maldonado, J.; Micela, G.; Baratella, M.; d'Orazi, V.; Affer, L.; Biazzo, K.; Lanza, A. F.; Maggio, A.; González Hernández, J. I.; Perger, M.; Pinamonti, M.; Scandariato, G.; Sozzetti, A.; Locci, D.; Di Maio, C.; Bignamini, A.; Claudi, R.; Molinari, E.; Rebolo, R.; Ribas, I.; Toledo-Padrón, B.; Covino, E.; Desidera, S.; Herrero, E.; Morales, J. C.; Suárez-Mascareño, A.; Pagano, I.; Petralia, A.; Piotto, G.; Poretti, E. (2020). "HADES RV programme with HARPS-N at TNG. XII. The abundance signature of M dwarf stars with planets". Astronomy and Astrophysics. 644: A68. arXiv: 2010.14867 . Bibcode:2020A&A...644A..68M. doi:10.1051/0004-6361/202039478.
  8. ↑ Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs". The Astrophysical Journal Supplement Series . 271 (2): 55. arXiv: 2312.03639 . Bibcode:2024ApJS..271...55K. doi: 10.3847/1538-4365/ad24e2 .
  9. ↑ Bartlett, Jennifer L.; Ianna, P. A.; Begam, M. C. (2007). "Possible Astrometric Perturbation of LHS 288". American Astronomical Society Meeting Abstracts #209. 209: 254.16. Bibcode:2007AAS...20925416B.
  10. ↑ Bartlett, Jennifer L.; Ianna, Philip A.; Begam, Michael C. (April 2009). "A Search for Astrometric Companions to Stars in the Southern Hemisphere". Publications of the Astronomical Society of the Pacific . 121 (878): 365. Bibcode:2009PASP..121..365B. doi: 10.1086/599044 .
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