Gliese 1061
Coordinates: 
03h 35m 59.69s, −44° 30′ 45.3″
| 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) | 272.1615 ± 0.0316[6] mas |
| Distance | 11.984 ± 0.001 ly (3.6743 ± 0.0004 pc) |
| Absolute magnitude (MV) | 15.26[4] |
| Details | |
| Mass | 0.113[5] M☉ |
| Radius | 0.156±0.005 − 0.19[7] R☉ |
| Luminosity (bolometric) | 0.0017±0.0001 − 0.003[7] L☉ |
| Luminosity (visual, LV) | 0.00007[nb 1] L☉ |
| Temperature | 2953±98 − 2999±41[7] K |
| Metallicity [Fe/H] | −0.09±0.09[8] dex |
| Rotational velocity (v sin i) | ≤ 5[9] km/s |
| Age | >7.0±0.5[7] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
  Gliese 1061 Location of Gliese 1061 in the constellation Horologium | |
Gliese 1061 is a red dwarf star located approximately 12 light-years (3.7 parsecs) 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 (7.7 parsecs) distant based upon an estimated parallax of 0.130″. The RECONS accurately determined its distance in 1997. At that time, it was the 20th-nearest star system to the Sun. The discovery team noted that many more stars like this are likely to be discovered nearby.[2]
This star is a tiny, dim, red dwarf, close to the lower mass limit. It has an estimated mass of about 11.3% of the Sun and is only about 0.2% as luminous.[5][7] The star displays no significant infrared excess due to circumstellar dust.[10]
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.[7] 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.[7] Gliese 1061 is a non-variable star that does not suffer flares, so there is a greater probability that the exoplanets still conserve their atmosphere if they had one.[11]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 1.38+0.16 −0.15 M |