ρ Cyg, 73 Cygni, BD+44° 3865, FK5 1568, GC 30207, HD 205435, HIP 106481, HR 8252, SAO 51035
Database references
SIMBAD
data
Rho Cygni, Latinized from ρ Cygni, is a yellow-hued star in the northern constellation of Cygnus. It is visible to the naked eye with an apparent magnitude of 4.02.[2] The measured annual parallax shift is 26.39 milliarcseconds,[1] which yields a distance estimate of 124 light years. It is moving further from the Sun with a radial velocity of +6.88.[4] The star is a member of the thin disk population of the Milky Way galaxy.[7]
This is an evolved giant star of type G with an estimated age of 660[7] million years and a stellar classification of G8 III Fe-0.5.[3] The suffix notation indicates the spectrum shows a mild underabundance of iron in the outer atmosphere. It has about 2.16 times the mass of the Sun and 7.81 times the Sun's girth.[6] The star is radiating 37 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,100 K.[6]
Rho Cygni is a bright X-ray source with a luminosity of 10.26×1029 ergs s−1.[8] It has a maximum magnetic field strength of 7.3±0.5 G[9] at the surface.
^ abcdefvan Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600. Vizier catalog entry
^ abcdDucati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237: 0. Bibcode:2002yCat.2237....0D.
^ abKeenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins catalog of revised MK types for the cooler stars". Astrophysical Journal Supplement Series. 71: 245. Bibcode:1989ApJS...71..245K. doi:10.1086/191373.
^ abSoubiran, C.; et al. (March 2008), "Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants", Astronomy and Astrophysics, 480 (1): 91–101, arXiv:0712.1370, Bibcode:2008A&A...480...91S, doi:10.1051/0004-6361:20078788, S2CID 16602121
^Da Silva, Ronaldo; et al. (August 2015). "Homogeneous abundance analysis of FGK dwarf, subgiant, and giant stars with and without giant planets". Astronomy and Astrophysics. 580A: 24–42. arXiv:1505.01726. Bibcode:2015A&A...580A..24D. doi:10.1051/0004-6361/201525770. S2CID 119216425. Vizier catalog entry
^ abcdefReffert, Sabine; et al. (2015). "Precise radial velocities of giant stars. VII. Occurrence rate of giant extrasolar planets as a function of mass and metallicity". Astronomy and Astrophysics. 574A (2): 116–129. arXiv:1412.4634. Bibcode:2015A&A...574A.116R. doi:10.1051/0004-6361/201322360. hdl:10722/215277. S2CID 59334290. Vizier catalog entry
^ abcdeJofré, E.; et al. (2015). "Stellar parameters and chemical abundances of 223 evolved stars with and without planets". Astronomy & Astrophysics. 574: A50. arXiv:1410.6422. Bibcode:2015A&A...574A..50J. doi:10.1051/0004-6361/201424474. S2CID 53666931.
^Makarov, Valeri V. (October 2003), "The 100 Brightest X-Ray Stars within 50 Parsecs of the Sun", The Astronomical Journal, 126 (4): 1996–2008, Bibcode:2003AJ....126.1996M, doi:10.1086/378164.
^Aurière, M.; et al. (February 2015), "The magnetic fields at the surface of active single G-K giants", Astronomy & Astrophysics, 574: 30, arXiv:1411.6230, Bibcode:2015A&A...574A..90A, doi:10.1051/0004-6361/201424579, S2CID 118504829, A90.
RhoCygni, Latinized from ρ Cygni, is a yellow-hued star in the northern constellation of Cygnus. It is visible to the naked eye with an apparent magnitude...
Rho Cassiopeiae (/ˌroʊ kæsiəˈpiːaɪ, -sioʊ-, -iː/; ρ Cas, ρ Cassiopeiae) is a yellow hypergiant star in the constellation Cassiopeia. It is about 3,400...
stars Xi Cygni and RhoCygni. The star can also be found by continuing north along the line between the stars Zeta Cygni, Upsilon Cygni, Tau Cygni, and Sigma...
Large Magellanic Cloud. They are considered to be rare. The LBV stars P Cygni and η Carinae have been known as unusual variables since the 17th century...
V1668 Cygni was a nova that appeared in the northern constellation of Cygnus, situated a couple of degrees to the southeast of the star RhoCygni. It was...
Pi1 Cygni (π1 Cygni, abbreviated Pi1 Cyg, π1 Cyg) is a binary star in the northern constellation of Cygnus. It is visible to the naked eye, having a combined...
their spectral lines, producing a distinctive spectral shape known as a P Cygni profile. The use of hydrogen emission lines is not helpful for defining...
estimate of about 5,400 light-years (1,700 parsecs) from the Earth. Rho Leonis is an Alpha Cygni-type variable star, showing 0.032 magnitude brightness variations...
of expelled circumstellar materials which can produce emission lines, P Cygni profiles, or forbidden lines. The MK system assigns stars to luminosity...
spectrograms - XIX. The superficially normal B stars ζ Draconis, η Lyrae, 8 Cygni and 22 Cygni". Monthly Notices of the Royal Astronomical Society. 296 (4): 856–862...
Gamma Centauri Binary star system 2.21 2.14 Lambda Velorum Star 2.23 Gamma Cygni Star Suspected variable star 2.23 Alpha Cassiopeiae Star 2.230 Gamma Draconis...
Goodricke gave the correct explanation of its variability in 1784. Chi Cygni was identified in 1686 by G. Kirch, then R Hydrae in 1704 by G. D. Maraldi...
absolute magnitude of -10 and a luminosity of 787,000 L☉. The star has a P Cygni profile. This is commonly thought to be a characteristic of luminous blue...
refers to two stars: Gamma Corvi aka Gienah Corvi, in Corvus Epsilon Cygni aka Gienah Cygni, in Cygnus Gomeisa al-Ghumaişā' the Bleary-eyed one الغميصاء Beta...
773–777. doi:10.1051/0004-6361:20042039. ISSN 0004-6361. Data about NML Cygni (IRC +40448) is found here at VizieR. Zhang, B.; Reid, M. J.; Menten, K...
with a maximum range of 0.12 magnitudes and the star was treated as an α Cygni variable. A period of 556 days was suggested, but it is not entirely consistent...
designations, but some have survived to refer to astronomical objects: P Cygni for example is still used as a designation for Nova Cyg 1600. Tycho's Star...
naked eye (conservatively limiting unaided visual magnitude to 6.0), 61 Cygni A (magnitude V=5.20) has the highest proper motion at 5.281″ yr−1, discounting...
David F. (September 2015). "A SPECTROSCOPIC ANALYSIS OF THE K0 III BINARY ϵ CYGNI". The Astrophysical Journal. 810 (2): 117. doi:10.1088/0004-637X/810/2/117...
Meynet, Georges (2014-03-21). "The puzzle of the CNO abundances of {\alpha} Cygni variables resolved by the Ledoux criterion?". Monthly Notices of the Royal...
designations mark them as variable stars. Examples include R Cygni, RR Lyrae, and V1331 Cygni. The International Astronomical Union delegates the task to...
of a high-luminosity M-class star. The hydrogen lines, however, have P Cygni profiles fit for luminous blue variables. The spectrum is dominated by TiO...
hypergiant stars found in the constellation Cassiopeia, which also contains Rho Cassiopeiae. HR 8752 is around 15,700 light-years from Earth. It has an apparent...
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