Gliese 682

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
Distance16.6 ± 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
SIMBADstar
planet b
planet c

Gliese 682 or GJ 682 is a red dwarf star and is listed as 49th nearest 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]

Distance

Gliese 682 distance estimates

Source Parallax, mas Distance, pc Distance, ly Distance, Pm Ref.
Woolley et al. (1970) 213±5 4.69±0.11 15.3±0.4 144.9+3.5
−3.3		 [5]
Gliese & Jahreiß (1991) 211.6±5.9 4.73+0.14
−0.13		 15.4±0.4 145.8+4.2
−4		 [6]
van Altena et al. (1995) 210.7±7.0 4.75+0.16
−0.15		 15.5±0.5 146.4+5
−4.7		 [7]
Perryman et al. (1997) (Hipparcos) 198.32±2.43 5.04±0.06 16.45±0.2 155.6±1.9 [8]
Perryman et al. (1997) (Tycho) (absents) [9]
van Leeuwen (2007) 196.90±2.15 5.08+0.06
−0.05		 16.56±0.18 156.7±1.7 [2]
RECONS TOP100 (2012) 198.09±2.06[nb 1] 5.05±0.05 16.47±0.17 155.8±1.6 [10]

Non-trigonometric distance estimates are marked in italic. The most precise estimate is marked in bold.

Planetary system

The Gliese 682 planetary system
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 — — — — — —


See also

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 "LHS 451 -- High proper-motion Star". Centre de Données astronomiques de Strasbourg. Retrieved 2009-12-14.
  2. ↑ 2.0 2.1 van Leeuwen F. (2007). "HIP 86214". Validation of the new Hipparcos reduction. 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. ↑ Woolley R.; Epps E. A.; Penston M. J.; Pocock S. B. (1970). "Woolley 682". Catalogue of stars within 25 parsecs of the Sun. Retrieved 2014-11-22.
  6. ↑ Gliese, W. and Jahreiß, H. (1991). "Gl 682". Preliminary Version of the Third Catalogue of Nearby Stars. Retrieved 2014-11-22.
  7. ↑ Van Altena W. F., Lee J. T., Hoffleit E. D. (1995). "GCTP 3992". The General Catalogue of Trigonometric Stellar Parallaxes (Fourth ed.). Retrieved 2014-11-22.
  8. ↑ Perryman et al. (1997). "HIP 86214". The Hipparcos and Tycho Catalogues. Retrieved 2014-11-22.
  9. ↑ Perryman et al. (1997). "HIP 86214". The Hipparcos and Tycho Catalogues. Retrieved 2014-11-22.
  10. ↑ "RECONS TOP100". THE ONE HUNDRED NEAREST STAR SYSTEMS brought to you by RECONS (Research Consortium On Nearby Stars). 2012. Retrieved 2014-11-22.

Notes

  1. ↑ Weighted parallax based on parallaxes from van Altena et al. (1995) and van Leeuwen (2007).