# 64 Draconis

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Star in the constellation Draco

"e Draconis" redirects here; not to be confused with [ε Draconis](/source/%CE%95_Draconis).

64 Draconis Location of 64 Draconis (circled) Observation data Epoch J2000 Equinox J2000 Constellation Draco Right ascension 20h 01m 28.65587s[1] Declination +64° 49′ 15.5038″[1] Apparent magnitude (V) 5.27[2] Characteristics Evolutionary stage AGB[3] Spectral type M1 III[4] B−V color index 1.598±0.006[5] Astrometry Radial velocity (Rv) −36.12±0.13[5] km/s Proper motion (μ) RA: −24.818[1] mas/yr Dec.: +33.623[1] mas/yr Parallax (π) 7.2102±0.1296 mas[1] Distance 452 ± 8 ly (139 ± 2 pc) Absolute magnitude (MV) −1.05[5] Details Mass 1.36[6] M☉ Radius 68[7] R☉ Luminosity 967[7] L☉ Surface gravity (log g) 1.16[8] cgs Temperature 4,134[8] K Metallicity [Fe/H] −0.89[8] dex Age 5.4[8] Gyr Other designations e Draconis, 64 Dra, BD+64°1405, FK5 3604, HD 190544, HIP 98583, HR 7676, SAO 18658[9] Database references SIMBAD data

**64 Draconis** is a single[10] star in the northern [circumpolar constellation](/source/Circumpolar_constellation) of [Draco](/source/Draco_(constellation)), located 452 [light years](/source/Light_year) away.[1] It has the [Bayer designation](/source/Bayer_designation) of **e Draconis**; *64 Draconis* is the [Flamsteed designation](/source/Flamsteed_designation). The object is visible to the naked eye as a dim, red-hued star with an [apparent visual magnitude](/source/Apparent_visual_magnitude) of 5.27.[2] It is moving closer to the Earth with a heliocentric [radial velocity](/source/Radial_velocity) of −36 km/s, and it is predicted to come as close as 204 ly in around 4.3 million years.[5]

This is an [evolved](/source/Stellar_evolution) [red giant](/source/Red_giant) star with a [stellar classification](/source/Stellar_classification) of M1 III,[4] currently on the [asymptotic giant branch](/source/Asymptotic_giant_branch).[3] It has expanded to about 68 times the [Sun's radius](/source/Sun's_radius) and is radiating 967 times the [Sun's luminosity](/source/Sun's_luminosity) from its [photosphere](/source/Photosphere) at an [effective temperature](/source/Effective_temperature) of 4,134 K. 64 Draconis forms a faint naked-eye pair with [65 Draconis](https://en.wikipedia.org/w/index.php?title=65_Draconis&action=edit&redlink=1) 12′ away. The latter is a [suspected variable](/source/Variable_star) with a brightness range in the [Hipparcos](/source/Hipparcos) photometric filter of 5.29 to 5.33.[11]

In [Chinese](/source/Chinese_language) astronomy, it belongs to the 天廚 (*Tiān Chú*) (*[Celestial Kitchen](/source/Purple_Forbidden_enclosure)*) [asterism](/source/Asterism_(astronomy)).[12]

## 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) [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%202247469838114355200) at [VizieR](/source/VizieR).

1. ^ [***a***](#cite_ref-ubv_2-0) [***b***](#cite_ref-ubv_2-1) Ducati, J. R. (2002). "VizieR On-line Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". *CDS/ADC Collection of Electronic Catalogues*. **2237**. [Bibcode](/source/Bibcode_(identifier)):[2002yCat.2237....0D](https://ui.adsabs.harvard.edu/abs/2002yCat.2237....0D).

1. ^ [***a***](#cite_ref-eggen1992_3-0) [***b***](#cite_ref-eggen1992_3-1) Eggen, Olin J. (1992). "Asymptotic giant branch stars near the sun". *The Astronomical Journal*. **104**: 275. [Bibcode](/source/Bibcode_(identifier)):[1992AJ....104..275E](https://ui.adsabs.harvard.edu/abs/1992AJ....104..275E). [doi](/source/Doi_(identifier)):[10.1086/116239](https://doi.org/10.1086%2F116239).

1. ^ [***a***](#cite_ref-perkins1989_4-0) [***b***](#cite_ref-perkins1989_4-1) Keenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins catalog of revised MK types for the cooler stars". *Astrophysical Journal Supplement Series*. **71**: 245. [Bibcode](/source/Bibcode_(identifier)):[1989ApJS...71..245K](https://ui.adsabs.harvard.edu/abs/1989ApJS...71..245K). [doi](/source/Doi_(identifier)):[10.1086/191373](https://doi.org/10.1086%2F191373).

1. ^ [***a***](#cite_ref-Anderson2012_5-0) [***b***](#cite_ref-Anderson2012_5-1) [***c***](#cite_ref-Anderson2012_5-2) [***d***](#cite_ref-Anderson2012_5-3) Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". *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). [S2CID](/source/S2CID_(identifier)) [119257644](https://api.semanticscholar.org/CorpusID:119257644).

1. **[^](#cite_ref-charbonnel2020_6-0)** Charbonnel, C.; Lagarde, N.; Jasniewicz, G.; North, P. L.; Shetrone, M.; Krugler Hollek, J.; Smith, V. V.; Smiljanic, R.; Palacios, A.; Ottoni, G. (2020). "Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era". *Astronomy and Astrophysics*. **633**: A34. [arXiv](/source/ArXiv_(identifier)):[1910.12732](https://arxiv.org/abs/1910.12732). [Bibcode](/source/Bibcode_(identifier)):[2020A&A...633A..34C](https://ui.adsabs.harvard.edu/abs/2020A&A...633A..34C). [doi](/source/Doi_(identifier)):[10.1051/0004-6361/201936360](https://doi.org/10.1051%2F0004-6361%2F201936360).

1. ^ [***a***](#cite_ref-fetherolf2023_7-0) [***b***](#cite_ref-fetherolf2023_7-1) Fetherolf, Tara; Pepper, Joshua; Simpson, Emilie; Kane, Stephen R.; Močnik, Teo; English, John Edward; Antoci, Victoria; Huber, Daniel; Jenkins, Jon M.; Stassun, Keivan; Twicken, Joseph D.; Vanderspek, Roland; Winn, Joshua N. (2023). ["Variability Catalog of Stars Observed during the TESS Prime Mission"](https://doi.org/10.3847%2F1538-4365%2Facdee5). *The Astrophysical Journal Supplement Series*. **268** (1): 4. [arXiv](/source/ArXiv_(identifier)):[2208.11721](https://arxiv.org/abs/2208.11721). [Bibcode](/source/Bibcode_(identifier)):[2023ApJS..268....4F](https://ui.adsabs.harvard.edu/abs/2023ApJS..268....4F). [doi](/source/Doi_(identifier)):[10.3847/1538-4365/acdee5](https://doi.org/10.3847%2F1538-4365%2Facdee5).

1. ^ [***a***](#cite_ref-tautvaišienė_8-0) [***b***](#cite_ref-tautvaišienė_8-1) [***c***](#cite_ref-tautvaišienė_8-2) [***d***](#cite_ref-tautvaišienė_8-3) Tautvaišienė, G.; Mikolaitis, Š.; Drazdauskas, A.; Stonkutė, E.; Minkevičiūtė, R.; Pakštienė, E.; Kjeldsen, H.; Brogaard, K.; Chorniy, Y.; von Essen, C.; Grundahl, F.; Ambrosch, M.; Bagdonas, V.; Sharma, A.; Viscasillas Vázquez, C. (2022). ["Chemical Composition of Bright Stars in the Northern Hemisphere: Star-Planet Connection"](https://doi.org/10.3847%2F1538-4365%2Fac50b5). *The Astrophysical Journal Supplement Series*. **259** (2): 45. [arXiv](/source/ArXiv_(identifier)):[2202.10102](https://arxiv.org/abs/2202.10102). [Bibcode](/source/Bibcode_(identifier)):[2022ApJS..259...45T](https://ui.adsabs.harvard.edu/abs/2022ApJS..259...45T). [doi](/source/Doi_(identifier)):[10.3847/1538-4365/ac50b5](https://doi.org/10.3847%2F1538-4365%2Fac50b5).

1. **[^](#cite_ref-SIMBAD_9-0)** ["HD 40409"](http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+40409). *[SIMBAD](/source/SIMBAD)*. [Centre de données astronomiques de Strasbourg](/source/Centre_de_donn%C3%A9es_astronomiques_de_Strasbourg). Retrieved 2018-07-16.

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-gcvs_11-0)** Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". *VizieR On-line Data Catalog*. **1**. [Bibcode](/source/Bibcode_(identifier)):[2009yCat....102025S](https://ui.adsabs.harvard.edu/abs/2009yCat....102025S).

1. **[^](#cite_ref-Ridpath_12-0)** [Ridpath, Ian](/source/Ian_Ridpath). ["Star Tales - Draco"](http://ianridpath.com/startales/draco.html). Retrieved 10 May 2025.

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 [64 Draconis](https://en.wikipedia.org/wiki/64_Draconis) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/64_Draconis?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.