Gliese 877
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Octans |
| Right ascension | 22h 55m 45.509s[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 ± 0.0291 mas[3] |
| Distance | 28.017 ± 0.007 ly (8.590 ± 0.002 pc) |
| Absolute magnitude (MV) | 10.700 ± 0.0240[4] |
| Details[4] | |
| Radius | 0.442 ± 0.040 R☉ |
| Temperature | 3467 ± 100 K |
| Rotational velocity (v sin i) | 0.95 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
Gliese 877 (GJ 877 / HIP 113229 / LHS 531)[1] 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 the Sun's.[5] 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 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 are β Hydri and ζ Tucanae, respectively 4.5 and 6.2 light years.[6]
See also
[edit]References
[edit]- ^ a b c d e f LHS 531 -- High proper-motion Star Archived 2023-04-17 at the Wayback Machine (SIMBAD)
- ^ a b c Koen, 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.
- ^ a b c Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data 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.
- ^ a b Houdebine, 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. S2CID 119118088.
- ^ a b Morales, 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. S2CID 16238033. pp. 507-512.
- ^ "Stars within 15 light-years of Luyten 49-19 (The Internet Stellar Database)". Archived from the original on 2023-04-13. Retrieved 2017-06-17.
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