# HD 125072

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Star in the constellation Centaurus

HD 125072 Observation data Epoch J2000 Equinox J2000 Constellation Centaurus Right ascension 14h 19m 04.83414s[1] Declination −59° 22′ 44.5272″[1] Apparent magnitude (V) 6.637[2] Characteristics Spectral type K3 IV[3] U−B color index +0.905[4] B−V color index +1.025[4] Astrometry Radial velocity (Rv) −14.9[5] km/s Proper motion (μ) RA: −454.895[1] mas/yr Dec.: −810.729[1] mas/yr Parallax (π) 84.4535±0.0349 mas[1] Distance 38.62 ± 0.02 ly (11.841 ± 0.005 pc) Absolute magnitude (MV) 6.28[2] Details Mass 0.806±0.017[6] M☉ Radius 0.83+0.02 −0.01[1] R☉ Luminosity 0.347±0.001[1] L☉ Surface gravity (log g) 4.48[3] cgs Temperature 4,858+47 −59[1] K Metallicity [Fe/H] −0.70[7] dex Rotational velocity (v sin i) 3.97[8] km/s Age 9.98[7] Gyr Other designations CD−58°5564, GJ 542, HD 125072, HIP 69972, SAO 241627, LHS 2892, LTT 5625[9] Database references SIMBAD data

**HD 125072** is a [star](/source/Star) in the southern [constellation](/source/Constellation) of [Centaurus](/source/Centaurus). It is a challenge to view with the naked eye, having an [apparent visual magnitude](/source/Apparent_visual_magnitude) of 6.637.[2] The star is located at a distance of 38.6 [light years](/source/Light_year) from the Sun based on [parallax](/source/Stellar_parallax).[1] It is drifting closer with a [radial velocity](/source/Radial_velocity) of −14.9 km/s.[5] The components of the [space velocity](/source/Space_velocity_(astronomy)) for this star are U=−18.5, V=−6.9 and W=−26.9 km/s.[7]

The [stellar classification](/source/Stellar_classification) of this star is K3 IV,[3] matching a [K-type](/source/K-type_star) [subgiant](/source/Subgiant) that is evolving into a [giant](/source/Giant_star). It has 81%[6] of the [Sun's mass](/source/Sun's_mass) and 83%[1] of the [radius of the Sun](/source/Radius_of_the_Sun). The star is radiating 34.7% of the [Sun's luminosity](/source/Sun's_luminosity) from its [photosphere](/source/Photosphere) at an [effective temperature](/source/Effective_temperature) of 4,858 K.[1] Based on the composition and kinematics of this star, it has an estimated age of about 10 billion years.[7] It is spinning with a [projected rotational velocity](/source/Projected_rotational_velocity) of 4 km/s.[8]

## References

1. ^ [***a***](#cite_ref-GaiaDR2_1-0) [***b***](#cite_ref-GaiaDR2_1-1) [***c***](#cite_ref-GaiaDR2_1-2) [***d***](#cite_ref-GaiaDR2_1-3) [***e***](#cite_ref-GaiaDR2_1-4) [***f***](#cite_ref-GaiaDR2_1-5) [***g***](#cite_ref-GaiaDR2_1-6) [***h***](#cite_ref-GaiaDR2_1-7) [***i***](#cite_ref-GaiaDR2_1-8) [***j***](#cite_ref-GaiaDR2_1-9) [***k***](#cite_ref-GaiaDR2_1-10) [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%205866992641380992256) at [VizieR](/source/VizieR).

1. ^ [***a***](#cite_ref-cgssn09_2-0) [***b***](#cite_ref-cgssn09_2-1) [***c***](#cite_ref-cgssn09_2-2) Holmberg, J.; Nordström, B.; Andersen, J. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics", *Astronomy and Astrophysics*, **501** (3): 941–947, [arXiv](/source/ArXiv_(identifier)):[0811.3982](https://arxiv.org/abs/0811.3982), [Bibcode](/source/Bibcode_(identifier)):[2009A&A...501..941H](https://ui.adsabs.harvard.edu/abs/2009A&A...501..941H), [doi](/source/Doi_(identifier)):[10.1051/0004-6361/200811191](https://doi.org/10.1051%2F0004-6361%2F200811191), [S2CID](/source/S2CID_(identifier)) [118577511](https://api.semanticscholar.org/CorpusID:118577511)

1. ^ [***a***](#cite_ref-aj132_1_161_3-0) [***b***](#cite_ref-aj132_1_161_3-1) [***c***](#cite_ref-aj132_1_161_3-2) Gray, R. O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample", *[The Astronomical Journal](/source/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-MERMILLIOD_4-0) [***b***](#cite_ref-MERMILLIOD_4-1) Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", *Catalogue of Eggen's UBV Data. SIMBAD*, [Bibcode](/source/Bibcode_(identifier)):[1986EgUBV........0M](https://ui.adsabs.harvard.edu/abs/1986EgUBV........0M)

1. ^ [***a***](#cite_ref-rgcrv_5-0) [***b***](#cite_ref-rgcrv_5-1) Evans, D. S. (June 20–24, 1966), "The Revision of the General Catalogue of Radial Velocities", in Batten, Alan Henry; Heard, John Frederick (eds.), *Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30*, vol. 30, University of Toronto: [International Astronomical Union](/source/International_Astronomical_Union), p. 57, [Bibcode](/source/Bibcode_(identifier)):[1967IAUS...30...57E](https://ui.adsabs.harvard.edu/abs/1967IAUS...30...57E)

1. ^ [***a***](#cite_ref-aa_555_A150_6-0) [***b***](#cite_ref-aa_555_A150_6-1) Tsantaki, M.; et al. (July 2013), "Deriving precise parameters for cool solar-type stars. Optimizing the iron line list", *Astronomy & Astrophysics*, **555**: A150, [arXiv](/source/ArXiv_(identifier)):[1304.6639](https://arxiv.org/abs/1304.6639), [Bibcode](/source/Bibcode_(identifier)):[2013A&A...555A.150T](https://ui.adsabs.harvard.edu/abs/2013A&A...555A.150T), [doi](/source/Doi_(identifier)):[10.1051/0004-6361/201321103](https://doi.org/10.1051%2F0004-6361%2F201321103), [S2CID](/source/S2CID_(identifier)) [118388752](https://api.semanticscholar.org/CorpusID:118388752).

1. ^ [***a***](#cite_ref-aaa348_7-0) [***b***](#cite_ref-aaa348_7-1) [***c***](#cite_ref-aaa348_7-2) [***d***](#cite_ref-aaa348_7-3) Lachaume, R.; et al. (1999). "Age determinations of main-sequence stars: combining different methods". *Astronomy and Astrophysics*. **348**: 897–909. [Bibcode](/source/Bibcode_(identifier)):[1999A&A...348..897L](https://ui.adsabs.harvard.edu/abs/1999A&A...348..897L).

1. ^ [***a***](#cite_ref-aaa520_A79_8-0) [***b***](#cite_ref-aaa520_A79_8-1) Martínez-Arnáiz, R.; et al. (September 2010). ["Chromospheric activity and rotation of FGK stars in the solar vicinity. An estimation of the radial velocity jitter"](https://web.archive.org/web/20170922031257/http://eprints.ucm.es/37826/1/davidmontes17libre.pdf) (PDF). *Astronomy and Astrophysics*. **520**: A79. [arXiv](/source/ArXiv_(identifier)):[1002.4391](https://arxiv.org/abs/1002.4391). [Bibcode](/source/Bibcode_(identifier)):[2010A&A...520A..79M](https://ui.adsabs.harvard.edu/abs/2010A&A...520A..79M). [doi](/source/Doi_(identifier)):[10.1051/0004-6361/200913725](https://doi.org/10.1051%2F0004-6361%2F200913725). [S2CID](/source/S2CID_(identifier)) [43455849](https://api.semanticscholar.org/CorpusID:43455849). Archived from [the original](http://eprints.ucm.es/37826/1/davidmontes17libre.pdf) (PDF) on 2017-09-22. Retrieved 2018-11-04.

1. **[^](#cite_ref-SIMBAD_9-0)** ["HD 125072"](http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+125072). *[SIMBAD](/source/SIMBAD)*. [Centre de données astronomiques de Strasbourg](/source/Centre_de_donn%C3%A9es_astronomiques_de_Strasbourg). Retrieved 2020-11-08.

v t e Constellation of Centaurus List of stars in Centaurus Centaurus in Chinese astronomy Stars Bayer α A (Rigil Kentaurus) B (Toliman) C (Proxima Centauri) β (Hadar) γ δ ε ζ (Leepwal) η θ (Menkent) ι (Kulou) κ λ μ ν (Heng) ξ1 ξ2 ο1 ο2 π ρ σ τ υ1 υ2 φ χ ψ x1 x2 C3 D E F G H J K M N Q Flamsteed 1 (i) 2 (g) 3 (k) 4 (h) Variable R T V Y RR SV SX BV DY UY V346 V553 V744 V752 V761 (a) V763 (C1) V766 V779 (Krzemiński's star) V803 V810 V816 (Przybylski's Star) V831 V842 V885 V886 V863 V1032 V1369 V1400 V1935 HR 4460 (A) 4466 (C2) 4499 4522 4523 4537 (j) 4546 (B) 4721 4748 (u) 4796 4817 (l) 4831 (w) 4874 (p) 4888 (e) 4889 (n) 4940 (f) 4979 4989 5006 (r) 5041 (m) 5089 (d) 5174 (z) 5222 (y) 5224 5241 5297 5358 (v) 5371 5471 (b) 5485 (c1) 5489 (c2) HD 97413 98176 100453 101581 101930 102117 (Uklun) 103197 107914 108236 109749 110113 113538 113766 114386 114729 115600 116434 (Matza) 117207 117618 (Dofida) 117939 120411 121228 121504 124448 (Popper's Star) 125072 125595 131399 Other 2MASS J1126−5003 2M1207 Gaia BH2 HD 131399 Ab PSR B1259−63 PSR J1311−3430 TOI-763 WASP-15 (Nyamien) WASP-41 WASP-42 WASP-167/KELT-13 Exoplanets 2M1207b b Centauri b HD 101930 b HD 102117 b (Leklsullun) HD 103197 b HD 109749 b HD 113538 b c HD 114386 b HD 114729 b HD 117207 b HD 117618 b (Noifasui) HD 121504 b HIP 65426 b (Najsakopajk) HIP 67522 b NGTS-13b Proxima Centauri b c d WASP-15b (Asye) Star clusters NGC 3766 4230 4507 5281 5286 5316 5460 5617 5662 Other IC 2944 ω Centauri Scorpius–Centaurus association Stock 16 Nebulae NGC 3918 5307 Other Boomerang Nebula Fleming 1 G292.0+1.8 G306.3-0.9 Gum 41 IC 2944 IRAS 13208−6020 RCW 79 RCW 86 Southern Crab Nebula SuWt 2 Galaxies NGC 3557 3568 3749 3783 4444 4603 4622 4650A 4683 4696 4706 4709 4729 4730 4743 4744 4909 4930 4945 4976 5011 A 5026 5064 5082 5090 5091 5102 5114 5121 5128 (Centaurus A) 5161 5206 5253 5266 5291 5398 5408 5419 5483 5516 Other ESO 269-57 ESO 325-4 ESO 383-76 ESO 444-46 Fourcade-Figueroa Object IC 3370 IC 4214 IC 4329A IRAS 13224−3809 J1144−4308 LEDA 677373 PKS 1144−379 PKS 1353−341 PKS 1424−418 Galaxy clusters Abell S740 Centaurus Cluster Shapley Supercluster Astronomical events GW190521 SN 185 SN 1895B (Z) SN 1972E SN 1986G J1407b SN 2019so Category

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