astro.wikisort.org - StarGliese 880 is a small red dwarf star in the northern constellation of Pegasus that may host an exoplanetary companion. No stellar companions to Gliese 880 have been discovered as of 2020.[9]
Red dwarf star in the constellation Pegasus
Gliese 880
Observation data Epoch J2000 Equinox |
Constellation |
Pegasus |
Right ascension |
22h 56m 34.805s[1] |
Declination |
16° 33′ 12.36″[1] |
Apparent magnitude (V) |
8.68[2] |
Characteristics |
Evolutionary stage |
Main-sequence star |
Spectral type |
M1.5V[3] |
Apparent magnitude (B) |
10.187[2] |
Apparent magnitude (R) |
7.80[2] |
Apparent magnitude (I) |
7.100[2] |
Apparent magnitude (J) |
5.360±0.020[2] |
Apparent magnitude (H) |
4.800±0.036[2] |
Apparent magnitude (K) |
4.523±0.016[2] |
B−V color index |
1.507±0.015[2] |
Astrometry |
---|
|
---|
Radial velocity (Rv) | −27.99±0.16[1] km/s |
Proper motion (μ) | RA: −1034.733±0.026 mas/yr[1] Dec.: −284.131±0.025 mas/yr[1] |
Parallax (π) | 145.6234 ± 0.0254 mas[1] |
Distance | 22.397 ± 0.004 ly (6.867 ± 0.001 pc) |
Absolute magnitude (MV) | 9.50[2] |
|
Details |
---|
|
---|
Mass | 0.5860±0.0586[4] M☉ |
Radius | 0.689±0.044[4] R☉ |
Surface gravity (log g) | 4.77[5] cgs |
Temperature | 3,373±100[4] K |
Metallicity [Fe/H] | +0.20±0.05[6] dex |
Rotation | 37.5±0.1 d[7] |
Rotational velocity (v sin i) | 2.07[6] km/s |
|
Other designations |
---|
BD+15 4733, Gaia DR2 2828928008202069376, HD 216899, HIP 113296, Ross 671, 2MASS J22563497+1633130[8] |
Database references |
---|
SIMBAD | data |
Planetary system
In June 2019 a candidate planet was reported in orbit around Gliese 880.[10]
The Gliese 880 planetary system[10]
Companion (in order from star) |
Mass |
Semimajor axis (AU) |
Orbital period (days) |
Eccentricity |
Inclination |
Radius |
b (unconfirmed) |
8.5+5.7 −4.7 M🜨 |
0.187+0.016 −0.020 |
39.372+0.050 −0.059 |
0.13+0.25 −0.13 |
— |
— |
References
- Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
- Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
- Fuhrmeister, B.; et al. (2019), "The CARMENES search for exoplanets around M dwarfs. Period search in H{alpha}, Na I D, and Ca II IRT lines", Astronomy & Astrophysics, 623: A24, arXiv:1901.05173, Bibcode:2019A&A...623A..24F, doi:10.1051/0004-6361/201834483, S2CID 119064800
- Lopez‐Morales, Mercedes (May 2007). "On the Correlation between the Magnetic Activity Levels, Metallicities, and Radii of Low‐Mass Stars". The Astrophysical Journal. 660 (1): 732–739. arXiv:astro-ph/0701702. Bibcode:2007ApJ...660..732L. doi:10.1086/513142. S2CID 119530297.
- Abia, C.; et al. (2020), "The CARMENES search for exoplanets around M dwarfs: Rubidium abundances in nearby cool stars", Astronomy & Astrophysics, 642: A227, arXiv:2009.00876, Bibcode:2020A&A...642A.227A, doi:10.1051/0004-6361/202039032, S2CID 221447685
- Lindgren, Sara; Heiter, Ulrike (2017). "Metallicity determination of M dwarfs. Expanded parameter range in metallicity and effective temperature". Astronomy and Astrophysics. 604: A97. arXiv:1705.08785. Bibcode:2017A&A...604A..97L. doi:10.1051/0004-6361/201730715. S2CID 119216828.
- Suárez Mascareño, A.; et al. (September 2015). "Rotation periods of late-type dwarf stars from time series high-resolution spectroscopy of chromospheric indicators". Monthly Notices of the Royal Astronomical Society. 452 (3): 2745–2756. arXiv:1506.08039. Bibcode:2015MNRAS.452.2745S. doi:10.1093/mnras/stv1441.
- "HD 216899". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-11-23.
- Lamman, Claire; et al. (2020), "Robo-AO M-dwarf Multiplicity Survey: Catalog", The Astronomical Journal, 159 (4): 139, arXiv:2001.05988, Bibcode:2020AJ....159..139L, doi:10.3847/1538-3881/ab6ef1, S2CID 210718832
- Barnes, J. R.; et al. (2019-06-11). "Frequency of planets orbiting M dwarfs in the Solar neighbourhood". arXiv:1906.04644 [astro-ph.EP].
На других языках
- [en] Gliese 880
[es] Gliese 880
Gliese 880 (GJ 880 / HD 216899 / LHS 533 / Ross 671)[1] es una estrella en la constelación de Pegaso situada a 22,4 años luz del sistema solar.[2] De magnitud aparente +8,66,[1] no es observable a simple vista.
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