Ross 47
Star in the constellation Orion
Ross 47
Location of Ross 47 in the constellation
Orion
Observation dataEpoch 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/sProper motion (μ) RA: +1,997.342[ 1] mas /yr Dec.: −1569.63[ 1] mas /yr Parallax (π)172.6762 ± 0.0286 mas [ 1] Distance 18.888 ± 0.003 ly (5.7912 ± 0.0010 pc ) Absolute magnitude (MV )+12.73[ 4]
Details Mass 0.218± 0.005[ 5] M ☉ Radius 0.238± 0.009[ 5] R ☉ Luminosity 0.006288 ± 0.000094 [ 5] L ☉ Surface gravity (log g )4.44[ 1] cgs Temperature 3,334+67 −63 [ 5] K Metallicity [Fe/H] −0.19± 0.17[ 6] dex Rotation 170[ 7] Rotational velocity (v sin i )3.1[ 8] km/s Age 7.1[ 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 SIMBAD data
Ross 47 is a variable star of spectral type M4 located in the constellation Orion , 19 light-years from Earth.
A visual band light curve for V1352 Orionis, adapted from Weis (1994)[ 11]
Ross 47 was given the variable star designation V1352 in 1997.[ 12]
References
^ 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 .
^ 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 .
^ 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 .
^ 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 .
^ 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.
^ 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
^ 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 .
^ 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 .
^ 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 .
^ "Ross 47" . SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 16 February 2021 .
^ Weis, Edward W. (March 1994). "Long Term Variability in Dwarf M Stars" . Astronomical Journal . 107 (3): 1135. Bibcode :1994AJ....107.1135W . doi :10.1086/116925 . Retrieved 7 September 2024 .
^ Kazarovets, E. V.; Samus, N. N. (April 1997). "The 73rd Name-List of Variable Stars" . Information Bulletin on Variable Stars (4471). Bibcode :1997IBVS.4471....1K . Retrieved 7 September 2024 .
Primary member type
Celestial objects by systems. Secondary members are listed in small print.
Main-sequence stars
G-type
Tau Ceti (11.9118± 0.0074 ly)
4 (8?) planets: (b), (c), (d), e, f, g, h, (i)
K-type M-type(red dwarfs)
Ross 248 (10.3057± 0.0014 ly)
Lacaille 9352 (10.7241± 0.0007 ly)
2 (3?) planets: b, c, d?
Ross 128 (11.0074± 0.0011 ly)
planet b
EZ Aquarii (11.109± 0.034 ly)
2 red dwarfs: B, C
Struve 2398 (11.4908± 0.0009 ly)
red dwarf B
2? planets: Bb?, Bc?
Groombridge 34 (11.6191± 0.0008 ly)
red dwarf B
2 planets: Ab , Ac
DX Cancri (11.6797± 0.0027 ly)
GJ 1061 (11.9839± 0.0014 ly)
3 planets: b, c, d
YZ Ceti (12.1222± 0.0015 ly)
3 planets: b, c, d
Luyten's Star (12.3485± 0.0019 ly)
2 (4?) planets: b , c, d?, e?
Teegarden's Star (12.4970± 0.0045 ly)
2 planets: b , c
Kapteyn's Star (12.8308± 0.0008 ly)
Lacaille 8760 (12.9472± 0.0018 ly)
SCR 1845−6357 (13.0638± 0.0070 ly)
T-type brown dwarf B
Kruger 60 (13.0724± 0.0052 ly)
red dwarf B
DENIS J1048−3956 (13.1932± 0.0027 ly)
Ross 614 (13.363± 0.040 ly)
red dwarf B
Wolf 1061 (14.0500± 0.0016 ly)
3 planets: b , c , d
Gliese 1 (14.1747± 0.0022 ly)
TZ Arietis (14.5780± 0.0046 ly)
planet b
Wolf 424 (14.595± 0.031 ly)
red dwarf B
Gliese 687 (14.8395± 0.0014 ly)
2 planets: b, c
Gliese 674 (14.8492± 0.0018 ly)
planet b
LHS 292 (14.8706± 0.0041 ly)