Gliese 877
| Observation data EpochJ2000.0EquinoxJ2000.0 | |
|---|---|
| Constellation | Octans |
| Right ascension | 22h55m45.509s[1] |
| Declination | −75° 27′ 31.21″[1] |
| Apparent magnitude(V) | 10.377[1] |
| Characteristics | |
| Spectral type | M3V[2] |
| Astrometry | |
| Proper motion(μ) | RA:-1026.327[3]mas/yr Dec.:-1059.318[3]mas/yr |
| Parallax(π) | 116.4127 ± 0.0291mas[3] |
| Distance | 28.017 ± 0.007ly (8.590 ± 0.002pc) |
| Absolute magnitude(MV) | 10.700 ± 0.0240[4] |
| Details[4] | |
| Radius | 0.442 ± 0.040R☉ |
| Temperature | 3467 ± 100K |
| Rotational velocity(vsini) | 0.95 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
Gliese 877(GJ 877 /HIP113229 /LHS531)[1]is ared dwarflocated in the southernconstellationofOctans,near the boundary withIndus.
Gliese 877's bolometric luminosity is just 2.3% of the Sun's.[5]It shines with anapparent magnitudeof +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 the Solar System; in particular, it is almost 14 times more luminous than Proxima. Of spectral type M3V,[2]its effective temperature is 3390 K.[5]It does not appear to be a variable star.[2]
Gliese 877 is 28.1 light years from the Solar System.[1]Known stars close to it areβ Hydriandζ Tucanae,respectively 4.5 and 6.2 light years.[6]
See also
[edit]References
[edit]- ^abcdefLHS 531 -- High proper-motion StarArchived2023-04-17 at theWayback Machine(SIMBAD)
- ^abcKoen, C.; Kilkenny, D.; van Wyk, F.; Marang, F. (2010)."UBV(RI)C JHK observations of Hipparcos-selected nearby stars".Monthly Notices of the Royal Astronomical Society.403(4): 1949–1968.Bibcode:2010MNRAS.403.1949K.doi:10.1111/j.1365-2966.2009.16182.x.pp. 1949-1968.
- ^abcBrown, A. G. A.;et al. (Gaia collaboration) (August 2018)."GaiaData Release 2: Summary of the contents and survey properties ".Astronomy & Astrophysics.616.A1.arXiv:1804.09365.Bibcode:2018A&A...616A...1G.doi:10.1051/0004-6361/201833051.
- ^abHoudebine, E. R.; Mullan, D. J.; Paletou, F.; Gebran, M. (2016)."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".The Astrophysical Journal.822(2): 97.arXiv:1604.07920.Bibcode:2016ApJ...822...97H.doi:10.3847/0004-637X/822/2/97.S2CID119118088.
- ^abMorales, J. C.; Ribas, I.; Jordi, C. (2008). "The effect of activity on stellar temperatures and radii".Astronomy and Astrophysics.478(2): 507–512.arXiv:0711.3523.Bibcode:2008A&A...478..507M.doi:10.1051/0004-6361:20078324.S2CID16238033.pp. 507-512.
- ^"Stars within 15 light-years of Luyten 49-19 (The Internet Stellar Database)".Archivedfrom the original on 2023-04-13.Retrieved2017-06-17.
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