HD 141937 Star in the constellation Libra
HD 141937 is a star in the southern zodiac constellation of Libra , positioned a couple of degrees to the north of Lambda Librae . It is a yellow-hued star with an apparent visual magnitude of 7.25,[ 1] light-years from the Sun based on parallax , but is drifting closer with a radial velocity of −3.4 km/s.[ 2] absolute magnitude of 4.71.[ 1]
This is a G-type main-sequence star with a stellar classification of G1V.[ 3] solar-type star with slightly higher mass and radius compared to the Sun. The metallicity is higher than solar. It is an estimated 3.8[ 4] billion years old and is spinning with a projected rotational velocity of 6 km/s.[ 7] luminosity of the Sun from its photosphere at an effective temperature of 5,890 K.[ 5]
The star has a substellar companion (HD 141937 b), either a planet or a brown dwarf, announced in April 2001 by the European Southern Observatory .[ 8] minimum mass of 9.7 M J [ 9] inclination of the orbit was measured via astrometry , indicating a true mass of 27.4 M J brown dwarf .[ 10] [ 11] orbital distance 1.5 times farther away from the star as Earth is from the Sun , with a high eccentricity of 0.46.[ 11]
References
1 2 3 4 5 6 7 8 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. arXiv :1108.4971 Bibcode :2012AstL...38..331A . doi :10.1134/S1063773712050015 . XHIP record for this object at VizieR .1 2 3 4 5 6 7 8 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 .1 2 Gray, R. O.; et al. (July 2006). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 parsecs: The Northern Sample I". The Astronomical Journal . 132 (1): 161– 170. arXiv :astro-ph/0603770 Bibcode :2006AJ....132..161G . doi :10.1086/504637 . S2CID 119476992 . 1 2 3 4 Luck, R. Earle (January 2017). "Abundances in the Local Region II: F, G, and K Dwarfs and Subgiants" . The Astronomical Journal . 153 (1): 19. arXiv :1611.02897 Bibcode :2017AJ....153...21L . doi :10.3847/1538-3881/153/1/21 S2CID 119511744 . 21. 1 2 3 4 Brown, A. G. A. ; et al. (Gaia collaboration ) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties" . Astronomy & Astrophysics 616 . A1. arXiv :1804.09365 Bibcode :2018A& A...616A...1G doi :10.1051/0004-6361/201833051 Gaia DR2 record for this source at VizieR .↑ "HD 117207" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved 2018-07-23 .↑ Delgado Mena, E.; et al. (February 2014). "Li depletion in solar analogues with exoplanets. Extending the sample". Astronomy & Astrophysics . 562 : 17. arXiv :1311.6414 Bibcode :2014A& A...562A..92D . doi :10.1051/0004-6361/201321493 . S2CID 56104807 . A92. ↑ "Exoplanets: The Hunt Continues!" (Press release). Garching, Germany: European Southern Observatory. April 4, 2001. Retrieved December 29, 2012 .↑ Udry, S.; et al. (2002). "The CORALIE survey for southern extra-solar planets VIII. The very low-mass companions of HD141937, HD162020, HD168443, HD202206: brown dwarfs or superplanets?" . Astronomy and Astrophysics 390 (1): 267– 279. arXiv :astro-ph/0202458 Bibcode :2002A& A...390..267U . doi :10.1051/0004-6361:20020685 . S2CID 9389274 . ↑ Kiefer, F.; et al. (January 2021). "Determining the true mass of radial-velocity exoplanets with Gaia. Nine planet candidates in the brown dwarf or stellar regime and 27 confirmed planets" . Astronomy & Astrophysics . 645 A7. arXiv :2009.14164 Bibcode :2021A& A...645A...7K doi :10.1051/0004-6361/202039168 S2CID 221995447 . 1 2 3 Piccinini, G.; Petralia, A.; et al. (January 2026). "True Masses using RV data with Hipparcos and Gaia Astrometry". Astronomy & Astrophysics arXiv :2601.09401
