Ross 47
Observation data
Epoch J1950.0      Equinox J1950.0
Constellation Orion
Right ascension 05h 42m 09.26769s[1]
Declination +12° 29′ 21.6048″[1]
Apparent magnitude (V) +11.48 - 11.55[2]
Characteristics
Evolutionary stage red dwarf
Spectral type M4V[3]
U−B color index +14.264
B−V color index +13.130
Variable type BY Dra[2]
Astrometry
Radial velocity (Rv)106.06±0.18[1] km/s
Proper motion (μ) RA: +1,997.342[1] mas/yr
Dec.: −1569.63[1] mas/yr
Parallax (π)172.6762 ± 0.0286 mas[1]
Distance18.888 ± 0.003 ly
(5.7912 ± 0.0010 pc)
Absolute magnitude (MV)+12.73[4]
Details
Mass0.218±0.005[5] M☉
Radius0.238±0.009[5] R☉
Luminosity0.006288±0.000094[5] L☉
Surface gravity (log g)4.44[1] cgs
Temperature3,334+67
−63[5] K
Metallicity [Fe/H]−0.19±0.17[6] dex
Rotation170[7]
Rotational velocity (v sin i)3.1[8] km/s
Age7.1[9] Gyr
Other designations
V1352 Ori, GJ 213, HIP 26857, Ci 20 344, G 102-22, LFT 425, LHS 31, LTT 11704, NLTT 15489, Ross 47, TYC 722-455-1, 2MASS J05420897+1229252[10]
Database references
SIMBADdata
Ross 47 is located in the constellation Orion
Ross 47 is located in the constellation Orion
Ross 47
Location of Ross 47 in the constellation Orion

Ross 47 is a variable star of spectral type M4 located in the constellation Orion, 19 light-years from Earth.

References

  1. ^ a b c d e f g 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 Samus, N. N.; et al. (2017). "General Catalogue of Variable Stars". Astronomy Reports. GCVS 5.1. 61 (1): 80–88. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. S2CID 125853869.
  3. ^ Kirkpatrick, J. Davy; Henry, Todd J.; McCarthy, Donald W. Jr. (1991). "A standard stellar spectral sequence in the red/near-infrared - Classes K5 to M9". Astrophysical Journal Supplement. 77: 417. Bibcode:1991ApJS...77..417K. doi:10.1086/191611.
  4. ^ Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. eISSN 1562-6873. ISSN 1063-7737. S2CID 119257644.
  5. ^ a b c d Pineda, J. Sebastian; Youngblood, Allison; France, Kevin (September 2021). "The M-dwarf Ultraviolet Spectroscopic Sample. I. Determining Stellar Parameters for Field Stars". The Astrophysical Journal. 918 (1): 23. arXiv:2106.07656. Bibcode:2021ApJ...918...40P. doi:10.3847/1538-4357/ac0aea. S2CID 235435757. 40.
  6. ^ Antoniadis-Karnavas, A.; Sousa, S. G.; Delgado-Mena, E.; Santos, N. C.; Teixeira, G. D. C.; Neves, V. (2020), "ODUSSEAS: A machine learning tool to derive effective temperature and metallicity for M dwarf stars", Astronomy & Astrophysics, 636: A9, arXiv:2002.09367, Bibcode:2020A&A...636A...9A, doi:10.1051/0004-6361/201937194, S2CID 211252698
  7. ^ Astudillo-Defru, N.; Delfosse, X.; Bonfils, X.; Forveille, T.; Lovis, C.; Rameau, J. (2017). "Magnetic activity in the HARPS M dwarf sample. The rotation-activity relationship for very low-mass stars through R'HK". Astronomy and Astrophysics. 600: 600. arXiv:1610.09007. Bibcode:2017A&A...600A..13A. doi:10.1051/0004-6361/201527078. S2CID 119237202.
  8. ^ Hojjatpanah, S.; Oshagh, M.; Figueira, P.; Santos, N. C.; Amazo-Gómez, E. M.; Sousa, S. G.; Adibekyan, V.; Akinsanmi, B.; Demangeon, O.; Faria, J.; Gomes Da Silva, J.; Meunier, N. (2020). "The correlation between photometric variability and radial velocity jitter. Based on TESS and HARPS observations". Astronomy and Astrophysics. 639: 639. arXiv:2005.10105. Bibcode:2020A&A...639A..35H. doi:10.1051/0004-6361/202038035. S2CID 218719951.
  9. ^ 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. S2CID 260555994.
  10. ^ "Ross 47". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 16 February 2021.


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