| 释义 |
- References
{{Starbox begin
| name = 17 Cygni
}}{{Starbox observe
| epoch = J2000
| constell = Cygnus
| ra = {{RA|19|46|25.59978}}
| dec = {{DEC|+33|43|39.3427}}
| appmag_v = 5.00[3]
}}{{Starbox character
| class = F7 V[3] + M0.4[5]
| b-v = 0.46[3]
| u-b =
| variable =
}}{{Starbox astrometry
| radial_v = +4.1[7]
| prop_mo_ra = +23.25[8]
| prop_mo_dec = –449.31[8]
| parallax = 47.8473
| p_error = 0.1255
| parallax_footnote =
| absmag_v = 3.40[3]
}}{{Starbox detail
| component1 = 17 Cyg A
| mass = 1.24[12]
| radius = 0.95–1.1[13]
| gravity = 4.262[14]
| metal_fe = 0.027[14]
| temperature = 6,455[14]
| luminosity = 3.66[14]
| rotational_velocity = 9[3]
| rotation =
| age_gyr = 2.8[19]
}}{{Starbox catalog
| names = 17 Cyg, BD+33 3587, GJ 9670, HD 187013, HIP 97295, HR 7534, SAO 68827.[20]
}}{{Starbox reference
|Simbad=17+Cyg
}}{{Starbox end}}17 Cygni is the Flamsteed designation for a binary star system in the northern constellation of Cygnus. It has an apparent visual magnitude of 5.00,[3] so, according to the Bortle scale, it is visible from suburban skies at night. Measurements made with the Hipparcos spacecraft show an annual parallax shift of 0.0478″,[ which is equivalent to a distance of around {{Convert|68.2|ly|pc|abbr=on}} from the Sun. It has a relatively high proper motion, traversing the celestial sphere at the rate of {{Val|0.451|ul=arcsecond}}/year.[23]]The stellar classification of the primary star is F7 V,[3] which means it is a main sequence star like the Sun. The star has 1.24[12] times the mass of the Sun and 0.95–1.1[13] times the Sun's radius. It is some 2.8[19] billion years old and shines with 3.66[14] times the Sun's luminosity. The effective temperature of the stellar atmosphere is 6,455[14] K, giving it the yellow-white hued glow of an F-type star.[30] At an angular separation of 791.40 arcseconds is a proper motion companion with a classification of M0.4, indicating this is a red dwarf star. At the estimated distance of the pair, this is equal to a projected separation of 16,320 AU.[5] Although the CCDM lists four other companions, these are not associated with the pair.[32] References1. ^1 2 {{citation | first=F. | last=van Leeuwen | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 |date=November 2007 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | arxiv=0708.1752 | postscript=.}}
2. ^1 2 3 4 5 6 {{citation | last=Takeda | first=Yoichi | title=Fundamental Parameters and Elemental Abundances of 160 F-G-K Stars Based on OAO Spectrum Database | journal=Publications of the Astronomical Society of Japan | volume=59 | issue=2 | pages=335–356 |date=April 2007 | bibcode=2007PASJ...59..335T | postscript=. | doi=10.1093/pasj/59.2.335}}
3. ^1 {{citation | display-authors=1 | last1=Nordström | first1=B. | last2=Mayor | first2=M. | last3=Andersen | first3=J. | last4=Holmberg | first4=J. | last5=Pont | first5=F. | last6=Jørgensen | first6=B. R. | last7=Olsen | first7=E. H. | last8=Udry | first8=S. | last9=Mowlavi | first9=N. | title=The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ˜14,000 F and G dwarfs | journal=Astronomy and Astrophysics | volume=418 | issue=3 | pages=989–1019 |date=May 2004 | doi=10.1051/0004-6361:20035959 | bibcode=2004A&A...418..989N |arxiv = astro-ph/0405198 | postscript=.}}
4. ^1 2 3 4 5 6 7 {{citation | display-authors=1 | last1=Takeda | first1=Yoichi | last2=Sato | first2=Bun'ei | last3=Kambe | first3=Eiji | last4=Masuda | first4=Seiji | last5=Izumiura | first5=Hideyuki | last6=Watanabe | first6=Etsuji | last7=Ohkubo | first7=Michiko | last8=Yanagisawa | first8=Kenshi | last9=Yasaka | first9=Yoshiro | title=High-Dispersion Spectra Collection of Nearby F--K Stars at Okayama Astrophysical Observatory: A Basis for Spectroscopic Abundance Standards | journal=Publications of the Astronomical Society of Japan | volume=57 | issue=1 | pages=13–25 |date=February 2005 | bibcode=2005PASJ...57...13T | postscript=. | doi=10.1093/pasj/57.1.13}}
5. ^1 2 {{citation | display-authors=1 | last1=Dhital | first1=Saurav | last2=West | first2=Andrew A. | last3=Stassun | first3=Keivan G. | last4=Bochanski | first4=John J. | title=Sloan Low-mass Wide Pairs of Kinematically Equivalent Stars (SLoWPoKES): A Catalog of Very Wide, Low-mass Pairs | journal=The Astronomical Journal | volume=139 | issue=6 | pages=2566–2586 |date=June 2010 | doi=10.1088/0004-6256/139/6/2566 | bibcode=2010AJ....139.2566D | arxiv=1004.2755 | postscript=.}}
6. ^1 {{citation | last1=Phillips | first1=N. M. | last2=Greaves | first2=J. S. | last3=Dent | first3=W. R. F. | last4=Matthews | first4=B. C. | last5=Holland | first5=W. S. | last6=Wyatt | first6=M. C. | last7=Sibthorpe | first7=B. | display-authors=1 | title=Target selection for the SUNS and DEBRIS surveys for debris discs in the solar neighbourhood | journal=Monthly Notices of the Royal Astronomical Society | volume=403 | issue=3 | pages=1089–1101 |date=April 2010 | bibcode=2010MNRAS.403.1089P | doi=10.1111/j.1365-2966.2009.15641.x | arxiv=0911.3426 | postscript=.}} See the note for F094.
7. ^1 2 {{citation | last1=Holmberg | first1=J. | last2=Nordström | first2=B. | last3=Andersen | first3=J. | display-authors=1 | title=The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics | journal=Astronomy and Astrophysics | volume=501 | issue=3 | pages=941–947 |date=July 2009 | doi=10.1051/0004-6361/200811191 | bibcode=2009A&A...501..941H | arxiv=0811.3982 | postscript=.}}
8. ^1 2 {{citation | display-authors=1 | last1=Pasinetti-Fracassini | first1=L. E. | last2=Pastori | first2=L. | last3=Covino | first3=S. | last4=Pozzi | first4=A. | title=Catalogue of Stellar Diameters (CADARS) | journal=Astronomy and Astrophysics | volume=367 | issue=2 | pages=521–524 |date=February 2001 | doi=10.1051/0004-6361:20000451 | bibcode=2001A&A...367..521P | arxiv=astro-ph/0012289 | postscript=.}}
9. ^1 {{citation |title=The Colour of Stars |date=December 21, 2004 |work=Australia Telescope, Outreach and Education |publisher=Commonwealth Scientific and Industrial Research Organisation |url=http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html |accessdate=2012-01-16 |postscript=. |deadurl=yes |archiveurl=https://www.webcitation.org/6630AbtJZ?url=http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html |archivedate=March 10, 2012 |df= }}
10. ^1 {{cite simbad | title=* 17 Cyg | accessdate=2013-10-26}}
11. ^1 2 {{citation | title=Multiplicity among solar-type stars. IV. The CORAVEL radial velocities and the spectroscopic orbits of nearby K dwarfs | journal=Astronomy and Astrophysics | last1=Halbwachs | first1=J. -L | last2=Mayor | first2=M. | last3=Udry | first3=S. | last4=Fekel | first4=F. C. | last5=Hartkopf | first5=W. I. | last6=Levato | first6=H. | last7=Morrell | first7=N. I. | last8=Torres | first8=G. | last9=Udry | first9=S. | display-authors=1 | volume=619 | pages=A81 | year=2018 | bibcode=2018A&A...619A..81H | arxiv=1808.04605 | doi=10.1051/0004-6361/201833377 | postscript=. }}
12. ^1 {{citation | last1=Lépine | first1=Sébastien | last2=Shara | first2=Michael M. | title=A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog) | journal=The Astronomical Journal | volume=129 | issue=3 | pages=1483–1522 | date=March 2005 | doi=10.1086/427854 | bibcode=2005AJ....129.1483L | arxiv=astro-ph/0412070 | postscript=. }}
[1][2][3][4][5][6][7][8][9][10][11][12]
}}{{Stars of Cygnus}}{{Sky|19|46|25.60|+|33|43|39.35}} 10 : Cygnus (constellation)|Flamsteed objects|F-type main-sequence stars|M-type main-sequence stars|Binary stars|Gliese and GJ objects|Hipparcos objects|HR objects|Durchmusterung objects|Henry Draper Catalogue objects |