# HD 137058

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Star in the southern constellation of Lupus

This article is about k Lupi; not to be confused with [κ (kappa) Lupi](/source/Kappa_Lupi).

HD 137058 Location of HD 137058 (circled in red) Observation data Epoch J2000 Equinox J2000 Constellation Lupus[1] Right ascension 15h 25m 20.20923s[2] Declination −38° 44′ 00.8803″[2] Apparent magnitude (V) 4.60[1] Characteristics Evolutionary stage main sequence[3] Spectral type A0 V[4] B−V color index 0.000±0.015[1] Astrometry Radial velocity (Rv) −3.0±2.8[5] km/s Proper motion (μ) RA: −41.573[2] mas/yr Dec.: −24.603[2] mas/yr Parallax (π) 13.6178±0.4759 mas[2] Distance 240 ± 8 ly (73 ± 3 pc) Absolute magnitude (MV) −0.76[1] Details Mass 2.4[6] M☉ Radius 3.3[6] R☉ Luminosity 72[6] L☉ Surface gravity (log g) 3.78[6] cgs Temperature 9,283[6] K Rotational velocity (v sin i) 300.0[7] km/s Age 267[8] Myr Other designations k Lup, CD−38°10289, HD 137058, HIP 75501, HR 5724, SAO 206616[9] Database references SIMBAD data

**HD 137058** is a [star](/source/Star) in the southern [constellation](/source/Constellation) of [Lupus](/source/Lupus_(constellation)). Eggleton and Tokovinin (2008) list it as a single star,[10] although Nitschelm and David (2011) suggested it may be a double-lined [spectroscopic binary](/source/Spectroscopic_binary).[11] Its [apparent visual magnitude](/source/Apparent_visual_magnitude) is 4.60,[1] making it bright enough to be visible to the naked eye. Based on an annual [parallax shift](/source/Stellar_parallax) of 13.6 [mas](/source/Milliarcsecond),[2] it is located approximately 240 [light years](/source/Light_year) away.

The [primary component has a stellar classification](/source/Stellar_classification) of A0 V,[4] indicating it is an [A-type main-sequence star](/source/A-type_main-sequence_star). It rotates rapidly, with a [projected rotational velocity](/source/Projected_rotational_velocity) of 300 km/s, resulting in an [oblate shape](/source/Oblate_spheroid) with an equatorial radius 22% larger than its polar radius.[7] The star radiates 72 times the [Sun's luminosity](/source/Sun's_luminosity) from its [photosphere](/source/Photosphere) at an [effective temperature](/source/Effective_temperature) of 9,283 [K](/source/Kelvin).[6]

## 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) 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=75501&-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-GaiaDR2_2-0) [***b***](#cite_ref-GaiaDR2_2-1) [***c***](#cite_ref-GaiaDR2_2-2) [***d***](#cite_ref-GaiaDR2_2-3) [***e***](#cite_ref-GaiaDR2_2-4) [***f***](#cite_ref-GaiaDR2_2-5) [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%206006429373106563712) at [VizieR](/source/VizieR).

1. **[^](#cite_ref-patten1991_3-0)** Patten, B. M.; Willson, L. A. (1991). "An IRAS Survey of Main-Sequence B,A, and F Stars". *The Astronomical Journal*. **102**: 323. [Bibcode](/source/Bibcode_(identifier)):[1991AJ....102..323P](https://ui.adsabs.harvard.edu/abs/1991AJ....102..323P). [doi](/source/Doi_(identifier)):[10.1086/115879](https://doi.org/10.1086%2F115879).

1. ^ [***a***](#cite_ref-houk1978_4-0) [***b***](#cite_ref-houk1978_4-1) Houk, Nancy (1978). *Michigan catalogue of two-dimensional spectral types for the HD stars*. Vol. 2. Ann Arbor: Dept. of Astronomy, University of Michigan. [Bibcode](/source/Bibcode_(identifier)):[1978mcts.book.....H](https://ui.adsabs.harvard.edu/abs/1978mcts.book.....H).

1. **[^](#cite_ref-deBruijne2012_5-0)** de Bruijne, J. H. J.; Eilers, A.-C. (October 2012). "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project". *Astronomy & Astrophysics*. **546**: 14. [arXiv](/source/ArXiv_(identifier)):[1208.3048](https://arxiv.org/abs/1208.3048). [Bibcode](/source/Bibcode_(identifier)):[2012A&A...546A..61D](https://ui.adsabs.harvard.edu/abs/2012A&A...546A..61D). [doi](/source/Doi_(identifier)):[10.1051/0004-6361/201219219](https://doi.org/10.1051%2F0004-6361%2F201219219). [S2CID](/source/S2CID_(identifier)) [59451347](https://api.semanticscholar.org/CorpusID:59451347). A61.

1. ^ [***a***](#cite_ref-tic_6-0) [***b***](#cite_ref-tic_6-1) [***c***](#cite_ref-tic_6-2) [***d***](#cite_ref-tic_6-3) [***e***](#cite_ref-tic_6-4) [***f***](#cite_ref-tic_6-5) Stassun, Keivan G.; et al. (2019). ["The Revised TESS Input Catalog and Candidate Target List"](https://doi.org/10.3847%2F1538-3881%2Fab3467). *The Astronomical Journal*. **158** (4): 138. [arXiv](/source/ArXiv_(identifier)):[1905.10694](https://arxiv.org/abs/1905.10694). [Bibcode](/source/Bibcode_(identifier)):[2019AJ....158..138S](https://ui.adsabs.harvard.edu/abs/2019AJ....158..138S). [doi](/source/Doi_(identifier)):[10.3847/1538-3881/ab3467](https://doi.org/10.3847%2F1538-3881%2Fab3467).

1. ^ [***a***](#cite_ref-vanBelle2012_7-0) [***b***](#cite_ref-vanBelle2012_7-1) van Belle, Gerard T. (March 2012). "Interferometric observations of rapidly rotating stars". *The Astronomy and Astrophysics Review*. **20** (1): 51. [arXiv](/source/ArXiv_(identifier)):[1204.2572](https://arxiv.org/abs/1204.2572). [Bibcode](/source/Bibcode_(identifier)):[2012A&ARv..20...51V](https://ui.adsabs.harvard.edu/abs/2012A&ARv..20...51V). [doi](/source/Doi_(identifier)):[10.1007/s00159-012-0051-2](https://doi.org/10.1007%2Fs00159-012-0051-2). [S2CID](/source/S2CID_(identifier)) [119273474](https://api.semanticscholar.org/CorpusID:119273474).

1. **[^](#cite_ref-gontcharov2012_8-0)** Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood". *Astronomy Letters*. **38** (12): 771. [arXiv](/source/ArXiv_(identifier)):[1606.08814](https://arxiv.org/abs/1606.08814). [Bibcode](/source/Bibcode_(identifier)):[2012AstL...38..771G](https://ui.adsabs.harvard.edu/abs/2012AstL...38..771G). [doi](/source/Doi_(identifier)):[10.1134/S1063773712120031](https://doi.org/10.1134%2FS1063773712120031).

1. **[^](#cite_ref-SIMBAD_9-0)** ["HD 137058"](http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+137058). *[SIMBAD](/source/SIMBAD)*. [Centre de données astronomiques de Strasbourg](/source/Centre_de_donn%C3%A9es_astronomiques_de_Strasbourg). Retrieved 2018-07-29.

1. **[^](#cite_ref-Eggleton2008_10-0)** Eggleton, P. P.; Tokovinin, A. A. (2008). ["A catalogue of multiplicity among bright stellar systems"](https://doi.org/10.1111%2Fj.1365-2966.2008.13596.x). *Monthly Notices of the Royal Astronomical Society*. **389** (2): 869. [arXiv](/source/ArXiv_(identifier)):[0806.2878](https://arxiv.org/abs/0806.2878). [Bibcode](/source/Bibcode_(identifier)):[2008MNRAS.389..869E](https://ui.adsabs.harvard.edu/abs/2008MNRAS.389..869E). [doi](/source/Doi_(identifier)):[10.1111/j.1365-2966.2008.13596.x](https://doi.org/10.1111%2Fj.1365-2966.2008.13596.x). [S2CID](/source/S2CID_(identifier)) [14878976](https://api.semanticscholar.org/CorpusID:14878976).

1. **[^](#cite_ref-Nitschelm2011_11-0)** Nitschelm, C.; David, M. (2011). "An Investigation on Close Binaries in the Sco-Cen Complex". *Evolution of Compact Binaries*. **447**: 75. [Bibcode](/source/Bibcode_(identifier)):[2011ASPC..447...75N](https://ui.adsabs.harvard.edu/abs/2011ASPC..447...75N).

v t e Constellation of Lupus List of stars in Lupus Lupus in Chinese astronomy Stars Bayer α (Uridim) β γ δ ε ζ η θ ι κ λ μ ν1 ν2 ξ ο π ρ σ τ1 τ2 υ φ1 φ2 χ ψ1 ψ2 ω Flamsteed 1 (i) 2 (f) Variable RU EX GG GQ HR II IL IM KT (d) V407 V462 HR 5362 5364 5401 5651 (e) 5724 (k) 5825 (g) 5943 5967 HD 134004 135344 136164 141943 142527 143811 Other Gliese 588 HIP 70849 Lupus-TR-3 SSSPM J1549−3544 WASP-132 Exoplanets GQ Lupi b HIP 70849 b Lupus-TR-3b WASP-178b Star clusters NGC 5749 NGC 5822 NGC 5824 NGC 5927 NGC 5986 Nebulae IC 4406 NGC 5882 Galaxies IC 4444 NGC 5530 NGC 5643 Astronomical events SN 1006 Category

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Adapted from the Wikipedia article [HD 137058](https://en.wikipedia.org/wiki/HD_137058) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/HD_137058?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.