# HD 141937

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Star in the constellation Libra

HD 141937 Observation data Epoch J2000 Equinox J2000 Constellation Libra[1] Right ascension 15h 52m 17.54740s[2] Declination −18° 26′ 09.8432″[2] Apparent magnitude (V) 7.25[1] Characteristics Evolutionary stage main sequence[2] Spectral type G1V[3] B−V color index +0.628±0.002[1] Astrometry Radial velocity (Rv) −3.36±0.14[2] km/s Proper motion (μ) RA: +97.862 mas/yr[2] Dec.: +22.363 mas/yr[2] Parallax (π) 30.5637±0.0898 mas[2] Distance 106.7 ± 0.3 ly (32.72 ± 0.10 pc) Absolute magnitude (MV) 4.71[1] Details Mass 1.03[4] M☉ Radius 1.05[5] R☉ Luminosity 1.202±0.003[5] L☉ Surface gravity (log g) 4.44[4] cgs Temperature 5,890+15 −30[5] K Metallicity [Fe/H] +0.10±0.01[1] dex Rotational velocity (v sin i) 6.0[1] km/s Age 3.82[4] Gyr Other designations BD−17°4442, HD 141937, HIP 77740, SAO 159551[6] Database references SIMBAD data Exoplanet Archive data

**HD 141937** is a [star](/source/Star) in the southern [zodiac](/source/Zodiac) [constellation](/source/Constellation) of [Libra](/source/Libra_(constellation)), positioned a couple of degrees to the north of [Lambda Librae](/source/Lambda_Librae). It is a yellow-hued star with an [apparent visual magnitude](/source/Apparent_visual_magnitude) of 7.25,[1] which means it is too faint to be seen with the naked eye. This object is located at a distance of 106.7 [light-years](/source/Light-year) from the [Sun](/source/Sun) based on [parallax](/source/Stellar_parallax), but is drifting closer with a [radial velocity](/source/Radial_velocity) of −3.4 km/s.[2] It has an [absolute magnitude](/source/Absolute_magnitude) of 4.71.[1]

This is a [G-type main-sequence star](/source/G-type_main-sequence_star) with a [stellar classification](/source/Stellar_classification) of G1V.[3] It is a [solar-type star](/source/Solar-type_star) with slightly higher mass and radius compared to the Sun. The [metallicity](/source/Metallicity) is higher than solar. It is an estimated 3.8[4] billion years old and is spinning with a [projected rotational velocity](/source/Projected_rotational_velocity) of 6 km/s.[7] The star is radiating 1.2 times the [luminosity of the Sun](/source/Luminosity_of_the_Sun) from its [photosphere](/source/Photosphere) at an [effective temperature](/source/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](/source/European_Southern_Observatory).[8] It has a [minimum mass](/source/Minimum_mass) of 9.7 [MJ](/source/Jupiter_mass).[9] In 2020, the [inclination](/source/Orbital_inclination) of the orbit was measured via [astrometry](/source/Astrometry), indicating a true mass of 27.4 [MJ](/source/Jupiter_mass), which would make it a [brown dwarf](/source/Brown_dwarf).[10] However, a more recent astrometric study in 2026 found an edge-on orbit, indicating a planetary mass.[11] A 662-day orbit places the [orbital distance](/source/Orbital_distance) 1.5 times farther away from the [star](/source/Star) as [Earth](/source/Earth) is from the [Sun](/source/Sun), with a high [eccentricity](/source/Eccentricity_(orbit)) of 0.46.[11]

The HD 141937 planetary system[11] Companion (in order from star) Mass Semimajor axis (AU) Orbital period (days) Eccentricity Inclination (°) Radius b 11.3±0.5 MJ 1.54±0.02 662.37±0.09 0.460±0.004 90.00+6.75 −6.76 —

## See also

- [HD 142022](/source/HD_142022)

- [HD 142415](/source/HD_142415)

- [List of extrasolar planets](/source/List_of_extrasolar_planets)

## References

1. ^ [***a***](#cite_ref-Anderson2012_1-0) [***b***](#cite_ref-Anderson2012_1-1) [***c***](#cite_ref-Anderson2012_1-2) [***d***](#cite_ref-Anderson2012_1-3) [***e***](#cite_ref-Anderson2012_1-4) [***f***](#cite_ref-Anderson2012_1-5) [***g***](#cite_ref-Anderson2012_1-6) [***h***](#cite_ref-Anderson2012_1-7) Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". *[Astronomy Letters](/source/Astronomy_Letters)*. **38** (5): 331. [arXiv](/source/ArXiv_(identifier)):[1108.4971](https://arxiv.org/abs/1108.4971). [Bibcode](/source/Bibcode_(identifier)):[2012AstL...38..331A](https://ui.adsabs.harvard.edu/abs/2012AstL...38..331A). [doi](/source/Doi_(identifier)):[10.1134/S1063773712050015](https://doi.org/10.1134%2FS1063773712050015). [XHIP record for this object](https://vizier.cds.unistra.fr/viz-bin/VizieR-4?-ref=VIZ681510a8389ecb&-out.src=V%2F137D%2FXHIP&-nav=cat%3AV%2F137D%26tab%3A{V%2F137D%2FXHIP}%26key%3Asource%3DV%2F137D%2FXHIP%26HTTPPRM%3A&-source=V%2F137D%2FXHIP&-out=HIP&HIP=77740&-out=Comp&-out=Gr&-out=RAJ2000&-out=DEJ2000&-out=Dist&-out=X&-out=Y&-out=Z&-out=SpType&-out=Simbad&-out=Hpmag&-out=Lum&-out=Cst) at [VizieR](/source/VizieR).

1. ^ [***a***](#cite_ref-GaiaDR3_2-0) [***b***](#cite_ref-GaiaDR3_2-1) [***c***](#cite_ref-GaiaDR3_2-2) [***d***](#cite_ref-GaiaDR3_2-3) [***e***](#cite_ref-GaiaDR3_2-4) [***f***](#cite_ref-GaiaDR3_2-5) [***g***](#cite_ref-GaiaDR3_2-6) Vallenari, A.; et al. (Gaia collaboration) (2023). ["*Gaia* Data Release 3. Summary of the content and survey properties"](https://doi.org/10.1051%2F0004-6361%2F202243940). *Astronomy and Astrophysics*. **674**: A1. [arXiv](/source/ArXiv_(identifier)):[2208.00211](https://arxiv.org/abs/2208.00211). [Bibcode](/source/Bibcode_(identifier)):[2023A&A...674A...1G](https://ui.adsabs.harvard.edu/abs/2023A&A...674A...1G). [doi](/source/Doi_(identifier)):[10.1051/0004-6361/202243940](https://doi.org/10.1051%2F0004-6361%2F202243940). [S2CID](/source/S2CID_(identifier)) [244398875](https://api.semanticscholar.org/CorpusID:244398875). [Gaia DR3 record for this source](https://vizier.cds.unistra.fr/viz-bin/VizieR-4?-source=+I%2F355&-from=nav&-nav=cat%3AI%2F355%26tab%3A%7BI%2F355%2Fgaiadr3%7D%26key%3Asource%3D1355%2Fgaiadr3%26HTTPPRM%3A%26-out.add%3D.%26Source%3D%3D%3D6248534171318085376%26-go+%25%23Sesame%23%25%26) at [VizieR](/source/VizieR).

1. ^ [***a***](#cite_ref-Gray2006_3-0) [***b***](#cite_ref-Gray2006_3-1) 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](/source/ArXiv_(identifier)):[astro-ph/0603770](https://arxiv.org/abs/astro-ph/0603770). [Bibcode](/source/Bibcode_(identifier)):[2006AJ....132..161G](https://ui.adsabs.harvard.edu/abs/2006AJ....132..161G). [doi](/source/Doi_(identifier)):[10.1086/504637](https://doi.org/10.1086%2F504637). [S2CID](/source/S2CID_(identifier)) [119476992](https://api.semanticscholar.org/CorpusID:119476992).

1. ^ [***a***](#cite_ref-Earle2017_4-0) [***b***](#cite_ref-Earle2017_4-1) [***c***](#cite_ref-Earle2017_4-2) [***d***](#cite_ref-Earle2017_4-3) Luck, R. Earle (January 2017). ["Abundances in the Local Region II: F, G, and K Dwarfs and Subgiants"](https://doi.org/10.3847%2F1538-3881%2F153%2F1%2F21). *The Astronomical Journal*. **153** (1): 19. [arXiv](/source/ArXiv_(identifier)):[1611.02897](https://arxiv.org/abs/1611.02897). [Bibcode](/source/Bibcode_(identifier)):[2017AJ....153...21L](https://ui.adsabs.harvard.edu/abs/2017AJ....153...21L). [doi](/source/Doi_(identifier)):[10.3847/1538-3881/153/1/21](https://doi.org/10.3847%2F1538-3881%2F153%2F1%2F21). [S2CID](/source/S2CID_(identifier)) [119511744](https://api.semanticscholar.org/CorpusID:119511744). 21.

1. ^ [***a***](#cite_ref-GaiaDR2_5-0) [***b***](#cite_ref-GaiaDR2_5-1) [***c***](#cite_ref-GaiaDR2_5-2) [***d***](#cite_ref-GaiaDR2_5-3) [Brown, A. G. A.](/source/Anthony_Brown_(scientist)); et al. ([Gaia collaboration](/source/Data_Processing_and_Analysis_Consortium)) (August 2018). ["*Gaia* Data Release 2: Summary of the contents and survey properties"](https://doi.org/10.1051%2F0004-6361%2F201833051). *[Astronomy & Astrophysics](/source/Astronomy_%26_Astrophysics)*. **616**. A1. [arXiv](/source/ArXiv_(identifier)):[1804.09365](https://arxiv.org/abs/1804.09365). [Bibcode](/source/Bibcode_(identifier)):[2018A&A...616A...1G](https://ui.adsabs.harvard.edu/abs/2018A&A...616A...1G). [doi](/source/Doi_(identifier)):[10.1051/0004-6361/201833051](https://doi.org/10.1051%2F0004-6361%2F201833051). [Gaia DR2 record for this source](https://vizier.u-strasbg.fr/viz-bin/VizieR-S?Gaia%20DR2%206248534171318085376) at [VizieR](/source/VizieR).

1. **[^](#cite_ref-SIMBAD_6-0)** ["HD 117207"](http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+117207). *[SIMBAD](/source/SIMBAD)*. [Centre de données astronomiques de Strasbourg](/source/Centre_de_donn%C3%A9es_astronomiques_de_Strasbourg). Retrieved 2018-07-23.

1. **[^](#cite_ref-Mena2014_7-0)** Delgado Mena, E.; et al. (February 2014). "Li depletion in solar analogues with exoplanets. Extending the sample". *Astronomy & Astrophysics*. **562**: 17. [arXiv](/source/ArXiv_(identifier)):[1311.6414](https://arxiv.org/abs/1311.6414). [Bibcode](/source/Bibcode_(identifier)):[2014A&A...562A..92D](https://ui.adsabs.harvard.edu/abs/2014A&A...562A..92D). [doi](/source/Doi_(identifier)):[10.1051/0004-6361/201321493](https://doi.org/10.1051%2F0004-6361%2F201321493). [S2CID](/source/S2CID_(identifier)) [56104807](https://api.semanticscholar.org/CorpusID:56104807). A92.

1. **[^](#cite_ref-eso0114_8-0)** ["Exoplanets: The Hunt Continues!"](http://www.eso.org/public/news/eso0114/) (Press release). Garching, Germany: European Southern Observatory. April 4, 2001. Retrieved December 29, 2012.

1. **[^](#cite_ref-Udry2002_9-0)** 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?"](http://www.aanda.org/articles/aa/full/2002/28/aa2416/aa2416.html). *[Astronomy and Astrophysics](/source/Astronomy_and_Astrophysics)*. **390** (1): 267–279. [arXiv](/source/ArXiv_(identifier)):[astro-ph/0202458](https://arxiv.org/abs/astro-ph/0202458). [Bibcode](/source/Bibcode_(identifier)):[2002A&A...390..267U](https://ui.adsabs.harvard.edu/abs/2002A&A...390..267U). [doi](/source/Doi_(identifier)):[10.1051/0004-6361:20020685](https://doi.org/10.1051%2F0004-6361%3A20020685). [S2CID](/source/S2CID_(identifier)) [9389274](https://api.semanticscholar.org/CorpusID:9389274).

1. **[^](#cite_ref-Kiefer2020_10-0)** 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"](https://doi.org/10.1051%2F0004-6361%2F202039168). *Astronomy & Astrophysics*. **645** A7. [arXiv](/source/ArXiv_(identifier)):[2009.14164](https://arxiv.org/abs/2009.14164). [Bibcode](/source/Bibcode_(identifier)):[2021A&A...645A...7K](https://ui.adsabs.harvard.edu/abs/2021A&A...645A...7K). [doi](/source/Doi_(identifier)):[10.1051/0004-6361/202039168](https://doi.org/10.1051%2F0004-6361%2F202039168). [S2CID](/source/S2CID_(identifier)) [221995447](https://api.semanticscholar.org/CorpusID:221995447).

1. ^ [***a***](#cite_ref-Piccinini2026_11-0) [***b***](#cite_ref-Piccinini2026_11-1) [***c***](#cite_ref-Piccinini2026_11-2) Piccinini, G.; Petralia, A.; et al. (January 2026). "True Masses using RV data with Hipparcos and Gaia Astrometry". *[Astronomy & Astrophysics](/source/Astronomy_%26_Astrophysics)*. [arXiv](/source/ArXiv_(identifier)):[2601.09401](https://arxiv.org/abs/2601.09401).

v t e Constellation of Libra List of stars in Libra Libra in Chinese astronomy Stars Bayer α1 α2 (Zubenelgenubi) β (Zubeneschamali) γ (Zubenelhakrabi) δ ε ζ1 ζ2 ζ3 ζ4 η θ ι1 ι2 κ λ μ ν ξ1 ξ2 ο σ (Brachium) τ υ Flamsteed 2 3 4 5 10 11 12 16 17 18 22 23 26 28 30 36 37 41 42 47 48 49 50 Variable HN HO KU KX HR 5504 5455 HD 133131 134439 134440 135485 137010 139139 140283 141569 141937 Other 2M1510 2MASS 1507−1627 CWISEP J1446−2317 HE 1523−0901 WASP-57 WISE 1534−1043 WISE 1541−2250 Exoplanets 23 Librae b c Gliese 581b c e HD 137010 b (unconfirmed) K2-315b WASP-189b Star clusters NGC 5897 Galaxies NGC 5597 5605 5716 5728 5792 5793 5861 5885 5890 5898 5915 5917 Other AP Librae IC 1059 IRAS 14348−1447 PKS 1510−089 PKS 1519−273 QSO B1524−136 RXC J1504.1−0248 BCG Category

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Adapted from the Wikipedia article [HD 141937](https://en.wikipedia.org/wiki/HD_141937) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/HD_141937?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.