GJ 1061
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Horologium |
| Right ascension | 03h 35m 59.69s[1] |
| Declination | −44° 30′ 45.3″[1] |
| Apparent magnitude (V) | 13.03[2] |
| Characteristics | |
| Spectral type | M5.5 V[2] |
| Apparent magnitude (J) | 7.52 ± 0.02[3] |
| U−B color index | 1.52[3] |
| B−V color index | 1.90[3] |
| Astrometry | |
| Radial velocity (Rv) | −8 km/s |
| Proper motion (μ) | RA: 750.01[4] mas/yr Dec.: -349.98[5] mas/yr |
| Parallax (π) | 270.86 ± 1.29 mas[6] |
| Distance | 12.04 ± 0.06 ly (3.69 ± 0.02 pc) |
| Absolute magnitude (MV) | 15.26[4] |
| Details | |
| Mass | 0.113[5] M☉ |
| Luminosity | 0.001[5] L☉ |
| Metallicity [Fe/H] | −0.09±0.09[7] dex |
| Rotational velocity (v sin i) | ≤ 5[8] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
Gliese 1061 is a red dwarf star located approximately 12 light-years from Earth in the southern constellation of Horologium. Even though it is a relatively nearby star it has an apparent visual magnitude of about 13[2] so it can only be seen with at least a moderately-sized telescope.
The proper motion of Gliese 1061 has been known since 1974, but it was estimated to be further away: approximately 25 light-years distant based upon an estimated parallax of 0.130″. Its distance was only accurately determined in 1997 by the RECONS team. At that time, it was the 20th-nearest star system to the Sun. The discovery team noted that many more stars such as this are likely to be discovered nearby.[2]
This star is a very small, dim, red dwarf, close to the lower mass limit for a star. It has an estimated mass of about 11.3% of the Sun and is only 0.1% as luminous.[5] The star displays no significant infrared excess due to circumstellar dust.[9]
Planetary system
On August 13, 2019, a planetary system was announced orbiting the star Gliese 1061 by the Red Dots project of detecting terrestrial planets around nearby red dwarf stars.[10] The planet Gliese 1061 d orbits in the conservative circumstellar habitable zone of its star and the planet Gliese 1061 c orbits in the inner edge of the habitable zone.[10]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 1.38+0.16 −0.15 M🜨 |
0.021 ± 0.001 | 3.204 ± 0.001 | < 0.31 | — | — |
| c | 1.75 ± 0.23 M🜨 | 0.035 ± 0.001 | 6.689 ± 0.005 | < 0.29 | — | — |
| d | 1.68+0.25 −0.24 M🜨 |
0.054 ± 0.001 | 13.031+0.025 −0.032 |
< 0.53 | — | — |
See also
References
- ^ a b Cutri, R. M.; et al. (June 2003). "2MASS All-Sky Catalog of Point Sources". VizieR On-line Data Catalog: II/246. Bibcode:2003yCat.2246....0C.
- ^ a b c d Henry, Todd J.; et al. (1997). "The solar neighborhood IV: discovery of the twentieth nearest star". The Astronomical Journal. 114: 388–395. Bibcode:1997AJ....114..388H. doi:10.1086/118482.
- ^ a b c d "LHS 1565". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2008-12-11.
- ^ a b Scholz, R.-D.; et al. (2000). "New high-proper motion survey in the Southern sky". Astronomy and Astrophysics. 353: 958–969. Bibcode:2000A&A...353..958S.
- ^ a b c d "The One Hundred Nearest Star Systems". RECONS. 2008-01-01. Retrieved 2008-12-11.
- ^ Lurie, John C.; et al. (2014). "The Solar Neighborhood. XXXIV. a Search for Planets Orbiting Nearby M Dwarfs Using Astrometry". The Astronomical Journal. 148 (5): 91. arXiv:1407.4820. Bibcode:2014AJ....148...91L. doi:10.1088/0004-6256/148/5/91. S2CID 118492541.
- ^ Neves, V.; et al. (August 2014). "Metallicity of M dwarfs. IV. A high-precision [Fe/H] and Teff technique from high-resolution optical spectra for M dwarfs". Astronomy & Astrophysics. 568: 22. arXiv:1406.6127. Bibcode:2014A&A...568A.121N. doi:10.1051/0004-6361/201424139. S2CID 118619790. A121.
- ^ Barnes, J. R.; et al. (April 2014). "Precision radial velocities of 15 M5-M9 dwarfs". Monthly Notices of the Royal Astronomical Society. 439 (3): 3094–3113. arXiv:1401.5350. Bibcode:2014MNRAS.439.3094B. doi:10.1093/mnras/stu172. S2CID 16005221.
{{cite journal}}: CS1 maint: unflagged free DOI (link) - ^ Avenhaus, H.; et al. (December 2012). "The nearby population of M-dwarfs with WISE: a search for warm circumstellar dust". Astronomy & Astrophysics. 548: 15. arXiv:1209.0678. Bibcode:2012A&A...548A.105A. doi:10.1051/0004-6361/201219783. S2CID 56397054. A105.
- ^ a b Anglada-Escudé, G.; Reiners, A.; Pallé, E.; Ribas, I.; Berdiñas, Z. M.; López, C. Rodríguez; Morales, N.; López-González, M. J.; Hambsch, F.-J. (2019-08-13). "Red Dots: A temperate 1.5 Earth-mass planet in a compact multi-terrestrial planet system around GJ1061". Monthly Notices of the Royal Astronomical Society. arXiv:1908.04717. doi:10.1093/mnras/staa248. S2CID 199551874.
{{cite journal}}: CS1 maint: unflagged free DOI (link)
External links
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