Gliese 682

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Gliese 682
Observation data
Epoch J2000      Equinox
Constellation Scorpius
Right ascension 17h 37m 03.6613s[1]
Declination –44° 19′ 09.18″[1]
Apparent magnitude (V) 10.96[1]
Characteristics
Spectral type M3.5[1]
Apparent magnitude (B) ~12.61[1]
Apparent magnitude (V) ~10.96[1]
Apparent magnitude (J) 6.544 ±0.023[1]
Apparent magnitude (H) 5.917 ±0.038[1]
Apparent magnitude (K) 5.606 ±0.020[1]
Astrometry
Radial velocity (Rv) -60.0[1] km/s
Proper motion (μ) RA: -710.29 ± 2.85[1] mas/yr
Dec.: -938.17 ± 2.07[1] mas/yr
Parallax (π) 196.90 ± 2.15[2] mas
Distance 16.6 ± 0.2 ly
(5.08 ± 0.06 pc)
Absolute magnitude (MV) 12.45
Other designations
CD-44 11909, GJ 682, LHS 451, LFT 1358, HIP 86214, PLX 3992.
Database references
SIMBAD star
planet b
planet c
Exoplanet Archive data
ARICNS data
Extrasolar Planets
Encyclopaedia
data

Gliese 682 or GJ 682 is a red dwarf. It is listed as the 49th-nearest known star to the Sun, being about 16 light years away from the Earth. Even though it is close by, it is dim with an magnitude of 10.95 and thus requires a relatively powerful telescope to be seen. It is located in the constellation of Scorpius, near the bright star Theta Scorpii.[1] It has two candidate planets, one of which is in the habitable zone.[3][4]

Planetary system[edit]

The Gliese 682 planetary system[5]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b >4.4 M 0.08 17.48 0.08
c >8.7 M 0.18 57.32 0.10

See also[edit]

References[edit]

  1. ^ a b c d e f g h i j k l m "LHS 451 -- High proper-motion Star". Centre de Données astronomiques de Strasbourg. Retrieved 2009-12-14. 
  2. ^ Perryman; et al. (1997). "HIP 86214". The Hipparcos and Tycho Catalogues. Retrieved 2014-11-22. 
  3. ^ http://phl.upr.edu/projects/habitable-exoplanets-catalog/data
  4. ^ http://www.hpcf.upr.edu/~abel/phl/tuomi/hec_orbit_GJ_682_b.png
  5. ^ Tuomi, M.; et al. (2014). "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. 441 (2): 1545. arXiv:1403.0430Freely accessible. Bibcode:2014MNRAS.441.1545T. doi:10.1093/mnras/stu358.