Wolf 1061

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Wolf 1061
Observation data
Epoch J2000      Equinox J2000
Constellation Ophiuchus
Right ascension 16h 30m 18.1s
Declination –12° 39′ 45″
Apparent magnitude (V) 10.10
Characteristics
Spectral type M3 V
U−B color index 1.17
B−V color index 1.59
Variable type None
Astrometry
Radial velocity (Rv) –21.0 km/s
Proper motion (μ) RA: –93.61 mas/yr
Dec.: –1184.90 mas/yr
Parallax (π) 236.01 ± 1.67 mas
Distance 13.82 ± 0.10 ly
(4.24 ± 0.03 pc)
Absolute magnitude (MV) 11.96
Details
Temperature 3,380 ± 20[1] K
Metallicity [Fe/H] –0.02 ± 0.17[1] dex
Other designations
BD -12°4523, G 153-058, GCTP 3746.00, GJ 628, HIP 80824, LHS 419, Vys 164.

Wolf 1061 (V2306 Ophiuchi) is a red dwarf star. It is located relatively near the Sun, at a distance of about 13.8 light years, in the constellation Ophiuchus. It has a relatively high proper motion and has not been found to have any unusual spectroscopic features.

Planetary system[edit]

In March 2014, two planet candidates were proposed to orbit this star.[2] The report was based on the analysis of ancillary data obtained with the Ultraviolet and Visual Echelle Spectrograph (UVES) and High Accuracy Radial velocity Planet Searcher (HARPS) spectrographs, both from the European Southern Observatory. Despite being rather massive, one of the candidates GJ 682 c is in the circumstellar habitable zone of the star, meaning that, if rocky, it can support liquid water on its surface.

The Gliese 682 system
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
GJ 682 b >4.4 M 0.080 17.47 <0.27  ?°
GJ 682 c >8.7 M 0.176 57.32 <0.29  ?°


See also[edit]

References[edit]

  1. ^ a b Rojas-Ayala, Bárbara et al. (April 2012). "Metallicity and Temperature Indicators in M Dwarf K-band Spectra: Testing New and Updated Calibrations with Observations of 133 Solar Neighborhood M Dwarfs". The Astrophysical Journal 748 (2): 93. arXiv:1112.4567. Bibcode:2012ApJ...748...93R. doi:10.1088/0004-637X/748/2/93. 
  2. ^ Tuomi, Mikko et al. "Bayesian search for low-mass planets around nearby M dwarfs – Estimates for occurrence rate based on global detectability statistics". Monthly Notices of the Royal Astronomical Society. in press. arXiv:1403.0430. Bibcode:2014MNRAS.441.1545T. doi:10.1093/mnras/stu358. 

External links[edit]