| 词条 | HD 205877 |
| 释义 |
| name = HD 205877 }}{{Starbox observe | epoch = J2000 | constell = Indus | ra = {{RA|21|39|59.719}}[1] | dec = {{DEC|−52|21|32.43}}[1] | appmag_v = 6.21[3] }}{{Starbox character | class = F7III | b-v = 0.596[3] | u-b = 0.32[3] | variable = }}{{Starbox astrometry | radial_v = | prop_mo_ra = {{val|−17.62|0.59}}[1] | prop_mo_dec = {{val|7.04|0.37}}[1] | parallax = 5.75 | p_error = 0.55 | parallax_footnote = [1] | absmag_v = }}{{Starbox orbit | reference = [10] | primary = HD 205877 A | name = HD 205877 B | period = {{val|21.31|0.74}} | axis = {{val|0.0762|0.0084}} | eccentricity = {{val|0.54|0.18}} | inclination = {{val|150.4|11.1}} | node = {{val|31.5|74.2}} | periastron = {{val|1998.80|1.45}} | periarg = {{val|231.4|66.6}} }}{{Starbox detail | component1 = A | mass = 2.34[10] | component2 = B | mass2 = 2.20[10] }}{{Starbox catalog | names = {{odlist | name=HDS 3084 | HIP=106978 | HR=8269 | WDS=J21400-5222AB }}[13] }}{{Starbox reference | Simbad = HD+205877 }}{{Starbox end}}HD 205877 is a visual binary star system in the constellation Indus. It also a double lined spectroscopic binary. The components are very similar and both are located on the giant branch in the Hertzsprung–Russell diagram in agreement with the F7III spectral type.[10] Stellar systemThe visual binary nature of HD 205877 was discovered by the Hipparcos spacecraft and given the double star discoverer designation HDS 3084. The preliminary orbital elements of the system were determined with speckle interferometric measurements made at the 4.1 m Southern Astrophysical Research Telescope in Chile.[10] References1. ^1 2 3 {{cite journal | title=Narrow-band photometry of late-type stars. II | url=http://articles.adsabs.harvard.edu/full/1987A%26AS...68..259H | last1=Haggkvist | first1=L. | last2=Oja | first2=T. | journal=Astronomy and Astrophysics Supplement Series | volume=68 | issue=2 | pages=259–282 | year=1987 | bibcode=1987A&AS...68..259H }} [1][2][3][4]2. ^1 {{cite simbad | title=HD 205877 | accessdate=2018-03-11 }} 3. ^1 2 3 4 5 {{cite journal | title=New Orbits Based on Speckle Interferometry at SOAR. II | last1=Tokovinin | first1=Andrei | journal=The Astronomical Journal | volume=154 | issue=3 | at=110 | year=2017 | arxiv=1708.01300 | bibcode=2017AJ....154..110T | doi=10.3847/1538-3881/aa8459 }} 4. ^1 2 3 4 5 {{cite journal | title=Validation of the new Hipparcos reduction | url=http://www.aanda.org/articles/aa/full/2007/41/aa8357-07/aa8357-07.html | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | year=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 }}Vizier catalog entry }}{{Stars of Indus}}{{giant-star-stub}} 6 : Indus (constellation)|Henry Draper Catalogue objects|Hipparcos objects|HR objects|Binary stars|F-type giants |
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