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LHS 288

Coordinates: Sky map 10h 44m 21.320s, −61° 12′ 35.44″
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LHS 288
LHS 288 is located in the constellation Carina.
LHS 288 is located in the constellation Carina.
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]
Distance15.759 ± 0.003 ly
(4.832 ± 0.001 pc)
Absolute magnitude (MV)15.5[5]
Details
Mass0.106[6] M☉
Radius0.158[6] R☉
Luminosity0.00119[6] L☉
Surface gravity (log g)5.10[7] cgs
Temperature3,297[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
SIMBADdata

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.

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

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References

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  1. ^ a b c d e f 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. ^ a b "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. ^ a b c d e f "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. ^ a b c 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. ^ a b 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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