| 词条 | Gliese 877 |
| 释义 |
| name = Gliese 877 }}{{Starbox observe | epoch = J2000.0 | constell = Octans | ra = {{RA|22|55|45.509}}[1] | dec = {{DEC|-75|27|31.21}}[1] | appmag_v = 10.377[1] }}{{Starbox character | class=M3V[4] }}{{Starbox astrometry | prop_mo_ra = -1026.327[1] | prop_mo_dec = -1059.318[1] | parallax = 116.4127 | p_error = 0.0291 | parallax_footnote = [1] | absmag_v = 10.700 ± 0.0240[8] }}{{Starbox detail | source = [2] | temperature = 3467 ± 100 | radius = 0.442 ± 0.040 | rotational_velocity = 0.95 }}{{Starbox catalog | names={{odlist|GJ=877|HIP=113229|LHS=531}}[1] }}{{Starbox reference | Simbad=L+49-19 }}{{Starbox end}} Gliese 877 (GJ 877 / HIP 113229 / LHS 531)[3] is a red dwarf located in the southern constellation of Octans, near the boundary with Indus. Gliese 877's bolometric luminosity is just 2.3% of our sun's.[4] It shines with an apparent magnitude of +10.22, so it cannot be seen with the naked eye. Nevertheless, it is considerably brighter than other red dwarfs, such as Proxima Centauri, the closest red dwarf to our Solar System; in particular, it is almost 14 times more luminous than Proxima. Of spectral type M3V,[4] its effective temperature is 3390 K.[4] It does not appear to be a variable star.[5] Gliese 877 is 28.1 light years from the Solar System.[3] Known stars close to it are β Hydri and ζ Tucanae, respectively 4.5 and 6.2 light years.[6] See also
References1. ^1 2 {{cite DR2}} {{Stars of Octans}}{{red-dwarf-stub}}2. ^1 {{cite journal|bibcode=2016ApJ...822...97H|title=Rotation-Activity Correlations in K and M Dwarfs. I. Stellar Parameters and Compilations of v sin I and P/sin I for a Large Sample of Late-K and M Dwarfs|journal=The Astrophysical Journal|volume=822|issue=2|pages=97|last1=Houdebine|first1=E. R.|last2=Mullan|first2=D. J.|last3=Paletou|first3=F.|last4=Gebran|first4=M.|year=2016|doi=10.3847/0004-637X/822/2/97}} 3. ^1 2 3 4 5 LHS 531 -- High proper-motion Star (SIMBAD) 4. ^1 {{cite journal| author = Morales, J. C.; Ribas, I.; Jordi, C.| title = The effect of activity on stellar temperatures and radii| year = 2008| journal = Astronomy and Astrophysics| volume = 478| pages = 507–512| number = 2| id = pp. 507-512| bibcode = 2008A&A...478..507M| arxiv = 0711.3523| doi = 10.1051/0004-6361:20078324}} 5. ^1 2 {{cite journal| author = Koen, C.; Kilkenny, D.; van Wyk, F.; Marang, F.| title = UBV(RI)C JHK observations of Hipparcos-selected nearby stars| year = 2010| journal = Monthly Notices of the Royal Astronomical Society| volume = 403| pages = 1949–1968| number = 4| id = pp. 1949-1968| bibcode = 2010MNRAS.403.1949K| doi = 10.1111/j.1365-2966.2009.16182.x}} 6. ^Stars within 15 light-years of Luyten 49-19 (The Internet Stellar Database) 4 : Gliese and GJ objects|Hipparcos objects|Octans|M-type main-sequence stars |
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