# HD 151613

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Binary star system in the constellation in the constellation of Draco

HD 151613 Location of HD 151613 (circled in red) Observation data Epoch J2000 Equinox J2000 Constellation Draco[1] Right ascension 16h 45m 17.88121s[2] Declination +56° 46′ 54.7985″[2] Apparent magnitude (V) 4.84[1] Characteristics Spectral type F2 V[3] B−V color index 0.375±0.013[1] Astrometry Radial velocity (Rv) −2.0[4] km/s Proper motion (μ) RA: 24.85 mas/yr Dec.: 67.07 mas/yr Parallax (π) 39.2932±0.3182 mas[2] Distance 83.0 ± 0.7 ly (25.4 ± 0.2 pc) Absolute magnitude (MV) 2.71[1] Orbit[5] Period (P) 363.57 d Eccentricity (e) 0.35 Periastron epoch (T) 2415232.4 JD Argument of periastron (ω) (secondary) 80.7° Semi-amplitude (K1) (primary) 6.0 km/s Details Mass 1.43[4] M☉ Radius 1.6[6] R☉ Luminosity 6.91[1] L☉ Surface gravity (log g) 4.05[4] cgs Temperature 6,630[7] K Metallicity [Fe/H] −0.23[4] dex Rotational velocity (v sin i) 47.5±2.4[7] km/s Age 2.30[4] Gyr Other designations BD+57°1702, FK5 627, GJ 9578, HD 151613, HIP 82020, HR 6237, SAO 30076, WDS 16453+5647[8] Database references SIMBAD data

**HD 151613** is a [binary star](/source/Binary_star)[5] system in the northern [circumpolar constellation](/source/Circumpolar_constellation) of [Draco](/source/Draco_(constellation)). It is visible to the naked eye with an [apparent visual magnitude](/source/Apparent_visual_magnitude) of 4.84.[1] The distance to this star, as estimated from its annual [parallax shift](/source/Stellar_parallax) of 39.3 [mas](/source/Milliarcsecond),[2] is 83 [light years](/source/Light_year). It is moving closer to the Earth with a heliocentric [radial velocity](/source/Radial_velocity) of −2 km/s.[4]

This is a single-lined [spectroscopic binary](/source/Spectroscopic_binary)[3] system with an [orbital period](/source/Orbital_period) of 363.57 days and an [eccentricity](/source/Orbital_eccentricity) of 0.35.[5] The pair were resolved through [speckle interferometry](/source/Speckle_interferometry) in 1977, showing an [angular separation](/source/Angular_separation) of 0.041[″](/source/Second_of_arc). They were later resolved in 1981 with a separation of 0.047″, but were unresolved during 20 other attempts between 1976–1991.[9] The system is a source of [X-ray emission](/source/X-ray_astronomy).[10] The visible component is an [F-type main-sequence star](/source/F-type_main-sequence_star) with a [stellar classification](/source/Stellar_classification) of F2 V.[3] It is around 2.3 billion years old[4] with a [projected rotational velocity](/source/Projected_rotational_velocity) of 48 km/s.[7]

## 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) 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=82020&-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) [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).

1. ^ [***a***](#cite_ref-abt2009_3-0) [***b***](#cite_ref-abt2009_3-1) [***c***](#cite_ref-abt2009_3-2) Abt, Helmut A. (2009), "MK Classifications of Spectroscopic Binaries", *The Astrophysical Journal Supplement*, **180** (1): 117–18, [Bibcode](/source/Bibcode_(identifier)):[2009ApJS..180..117A](https://ui.adsabs.harvard.edu/abs/2009ApJS..180..117A), [doi](/source/Doi_(identifier)):[10.1088/0067-0049/180/1/117](https://doi.org/10.1088%2F0067-0049%2F180%2F1%2F117), [S2CID](/source/S2CID_(identifier)) [122811461](https://api.semanticscholar.org/CorpusID:122811461).

1. ^ [***a***](#cite_ref-Casagrande2011_4-0) [***b***](#cite_ref-Casagrande2011_4-1) [***c***](#cite_ref-Casagrande2011_4-2) [***d***](#cite_ref-Casagrande2011_4-3) [***e***](#cite_ref-Casagrande2011_4-4) [***f***](#cite_ref-Casagrande2011_4-5) [***g***](#cite_ref-Casagrande2011_4-6) Casagrande, L.; et al. (June 2011), "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey", *Astronomy and Astrophysics*, **530**: A138, [arXiv](/source/ArXiv_(identifier)):[1103.4651](https://arxiv.org/abs/1103.4651), [Bibcode](/source/Bibcode_(identifier)):[2011A&A...530A.138C](https://ui.adsabs.harvard.edu/abs/2011A&A...530A.138C), [doi](/source/Doi_(identifier)):[10.1051/0004-6361/201016276](https://doi.org/10.1051%2F0004-6361%2F201016276), [S2CID](/source/S2CID_(identifier)) [56118016](https://api.semanticscholar.org/CorpusID:56118016).

1. ^ [***a***](#cite_ref-Pourbaix2004_5-0) [***b***](#cite_ref-Pourbaix2004_5-1) [***c***](#cite_ref-Pourbaix2004_5-2) Pourbaix, D.; et al. (2004), "SB9: The Ninth Catalogue of Spectroscopic Binary Orbits", *Astronomy & Astrophysics*, **424**: 727–732, [arXiv](/source/ArXiv_(identifier)):[astro-ph/0406573](https://arxiv.org/abs/astro-ph/0406573), [Bibcode](/source/Bibcode_(identifier)):[2004A&A...424..727P](https://ui.adsabs.harvard.edu/abs/2004A&A...424..727P), [doi](/source/Doi_(identifier)):[10.1051/0004-6361:20041213](https://doi.org/10.1051%2F0004-6361%3A20041213), [S2CID](/source/S2CID_(identifier)) [119387088](https://api.semanticscholar.org/CorpusID:119387088).

1. **[^](#cite_ref-Cadars2001_6-0)** Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition", *Astronomy and Astrophysics*, **367** (2): 521–524, [arXiv](/source/ArXiv_(identifier)):[astro-ph/0012289](https://arxiv.org/abs/astro-ph/0012289), [Bibcode](/source/Bibcode_(identifier)):[2001A&A...367..521P](https://ui.adsabs.harvard.edu/abs/2001A&A...367..521P), [doi](/source/Doi_(identifier)):[10.1051/0004-6361:20000451](https://doi.org/10.1051%2F0004-6361%3A20000451), [S2CID](/source/S2CID_(identifier)) [425754](https://api.semanticscholar.org/CorpusID:425754).

1. ^ [***a***](#cite_ref-Reiners2006_7-0) [***b***](#cite_ref-Reiners2006_7-1) [***c***](#cite_ref-Reiners2006_7-2) Reiners, Ansgar (January 2006), "Rotation- and temperature-dependence of stellar latitudinal differential rotation", *Astronomy and Astrophysics*, **446** (1): 267–277, [arXiv](/source/ArXiv_(identifier)):[astro-ph/0509399](https://arxiv.org/abs/astro-ph/0509399), [Bibcode](/source/Bibcode_(identifier)):[2006A&A...446..267R](https://ui.adsabs.harvard.edu/abs/2006A&A...446..267R), [doi](/source/Doi_(identifier)):[10.1051/0004-6361:20053911](https://doi.org/10.1051%2F0004-6361%3A20053911), [S2CID](/source/S2CID_(identifier)) [8642707](https://api.semanticscholar.org/CorpusID:8642707)

1. **[^](#cite_ref-SIMBAD_8-0)** ["HD 151613"](http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+151613). *[SIMBAD](/source/SIMBAD)*. [Centre de données astronomiques de Strasbourg](/source/Centre_de_donn%C3%A9es_astronomiques_de_Strasbourg). Retrieved 2018-07-18.

1. **[^](#cite_ref-Hartkopf2009_9-0)** Hartkopf, William I.; Mason, Brian D. (September 2009), "Speckle Interferometry at Mount Wilson Observatory: Observations Obtained in 2006-2007 and 35 New Orbits", *The Astronomical Journal*, **138** (3): 813–826, [Bibcode](/source/Bibcode_(identifier)):[2009AJ....138..813H](https://ui.adsabs.harvard.edu/abs/2009AJ....138..813H), [doi](/source/Doi_(identifier)):[10.1088/0004-6256/138/3/813](https://doi.org/10.1088%2F0004-6256%2F138%2F3%2F813).

1. **[^](#cite_ref-Haakonsen2009_10-0)** Haakonsen, Christian Bernt; Rutledge, Robert E. (September 2009), "XID II: Statistical Cross-Association of ROSAT Bright Source Catalog X-ray Sources with 2MASS Point Source Catalog Near-Infrared Sources", *The Astrophysical Journal Supplement*, **184** (1): 138–151, [arXiv](/source/ArXiv_(identifier)):[0910.3229](https://arxiv.org/abs/0910.3229), [Bibcode](/source/Bibcode_(identifier)):[2009ApJS..184..138H](https://ui.adsabs.harvard.edu/abs/2009ApJS..184..138H), [doi](/source/Doi_(identifier)):[10.1088/0067-0049/184/1/138](https://doi.org/10.1088%2F0067-0049%2F184%2F1%2F138), [S2CID](/source/S2CID_(identifier)) [119267456](https://api.semanticscholar.org/CorpusID:119267456).

v t e Constellation of Draco List of stars in Draco Draco in Chinese astronomy Stars Bayer α (Thuban) β (Rastaban) γ (Eltanin) δ (Altais) ε (Tyl) ζ (Aldhibah) η (Athebyne) θ ι (Edasich) κ λ (Giausar) μ (Alrakis) ν (Kuma) ξ (Grumium) ο π ρ σ (Alsafi) τ υ φ χ ψ1 (Dziban) ψ2 ω Flamsteed 4 6 7 (Tianyi) 8 (Taiyi) 10 (i) 15 (A) 18 (g) 19 (h) 26 36 39 (b) 42 (Fafnir) 45 (d) 50 59 64 (e) 68 Variable TW YY AG BY CL CM CX DO EK HP V581 HR 3751 4126 4934 5811 6237 6518 6618 (Alruba) 6817 7137 7783 HD 109246 (Funi) 101364 128717 147379 156279 158259 176693 191939 Other 2MASS 1237+6526 2MASS J17554042+6551277 G 240-72 GD 356 Gliese 420 Gliese 625 Gliese 687 GRW +70 8247 Kepler-4 Kepler-10 Kepler-12 Kepler-90 Kepler-296 KOI-256 LP 71-82 Qatar-1 SDSS J1240+6710 Struve 2398 TOI-1136 WD 1856+534 WISE 1647+5632 WISE 1841+7000 Exoplanets HD 139357 b HD 167042 b ι Dra b (Hypatia) Kepler-4b Kepler-10b c Kepler-12b Kepler-90e f g h i Kepler-296b c d e f TOI-1452 b TrES-2b Star clusters LAMOST 1 Nebulae Cat's Eye Nebula NGC 6742 Galaxies NGC 3147 3197 3735 4121 4125 4221 4236 4319 4331 4332 4363 4441 4513 4545 4589 5678 5777 5866 5866B 5879 5905 5907 5949 5963 5965 5982 5985 6090 6248 6285 6286 6338 6340 6365 6373 6394 6412 6503 6505 6566 6621 6622 6670 6676 6786 6789 Other 1ES 1927+654 1ES 1959+650 3C 249.1 3C 305 3C 319 3C 343 3C 343.1 3C 351 3C 356 3C 371 3C 380 3C 390.3 3C 401 4C +72.26 4C 73.08 8C 1241+735 Abell 2218 BCG Bean galaxy Beaver galaxy BZQ J1727+5510 Draco Dwarf Draco II GB 1508+5714 Goldfish galaxy H1821+643 HFLS3 IERS B1946+708 IRAS F17179+5444 IRAS 18580+6527 J120011.1+680924.8 KKR 25 Markarian 817 Markarian 876 Original TRG PGC 39058 Porphyrion QSO B1823+568 RGZ J172749.5+534647 S5 1803+784 S5 2007+777 SDSS J1715+6008 Tadpole Galaxy UGC 9391 UGC 9405 UGC 11241 UGC 11411 WISEA J145223.62+611707.5 WN B1851+5707 Galaxy clusters Abell 2218 CL1358+62 Draco Supercluster NGC 5866 Group Astronomical events SN 2003jb SN 2005B SN 2016aps Swift J1644+57 Category

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Adapted from the Wikipedia article [HD 151613](https://en.wikipedia.org/wiki/HD_151613) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/HD_151613?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.