17h37m03.6613s, −44° 19′ 09.18″  Gliese 682 Location of Gliese 682 in the constellation Scorpius | |
| Observation data Epoch J2000 Equinox | |
|---|---|
| Constellation | Scorpius |
| Right ascension | 17h37m 03.6655s[1] |
| Declination | −44° 19′ 09.166″[1] |
| Apparent magnitude (V) | 10.94[2] |
| Characteristics | |
| Spectral type | M3.5V[3] |
| Apparent magnitude (B) | ~12.61[4] |
| Apparent magnitude (V) | ~10.96[4] |
| Apparent magnitude (J) | 6.544 ±0.023[4] |
| Apparent magnitude (H) | 5.917 ±0.038[4] |
| Apparent magnitude (K) | 5.606 ±0.020[4] |
| Astrometry | |
| Radial velocity (Rv) | −34.90±0.30[1] km/s |
| Proper motion (μ) | RA: −705.945±0.035 mas/yr[1] Dec.: −938.080±0.021 mas/yr[1] |
| Parallax (π) | 199.6944 ± 0.0312 mas[1] |
| Distance | 16.333 ± 0.003 ly (5.0077 ± 0.0008 pc) |
| Absolute magnitude (MV) | 12.4[5] |
| Details | |
| Mass | 0.27[3] M☉ |
| Radius | 0.30[2] R☉ |
| Luminosity | 0.008118[3] L☉ |
| Surface gravity (log g) | 4.95[6] cgs |
| Temperature | 3,237[2] K |
| Metallicity [Fe/H] | 0.05±0.09[6] dex |
| Rotational velocity (v sin i) | 3.42[7] km/s |
| Age | 6.4±4.3[6] Gyr |
| 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 |
Gliese 682orGJ 682 is a red dwarf. It is listed as the 53rd-nearest known star system to the Sun,[8] being 16.3 light years away from the Earth. Even though it is close by, it is dim with a magnitude of 10.95 and thus requires a telescope to be seen. It is located in the constellation of Scorpius, near the bright star Theta Scorpii.[4] The star is in a crowded region of sky near the Galactic Center, and so appears to be near a number of deep-sky objects from the Solar System's perspective. The star is only 0.5 degrees from the much more distant globular cluster NGC 6388.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b (unconfirmed) | >4.4 M🜨 | 0.08 | 17.48 | 0.08 | — | — |
| c (unconfirmed) | >8.7 M🜨 | 0.18 | 57.32 | 0.10 | — | — |
Two candidate planets were detected orbiting Gliese 682 in 2014, one of which would be in the habitable zone.[9][10] However, a 2020 study did not find these planets and concluded that the radial velocity signals were probably caused by stellar activity.[11]
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Italic are systems without known trigonometric parallax. | |||||||||||||||||||||||||||||||||||||||||||
