Gliese 682 or GJ 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.
  Gliese 682 Location of Gliese 682 in the constellation Scorpius | |
| Observation data Epoch J2000 Equinox | |
|---|---|
| Constellation | Scorpius |
| Right ascension | 17h 37m 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 |
Search for planets
edit| 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]
See also
editReferences
edit- ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c Suissa, Gabrielle; Mandell, Avi M.; Wolf, Eric T.; Villanueva, Geronimo L.; Fauchez, Thomas; Kopparapu, Ravi Kumar (2020). "Dim Prospects for Transmission Spectra of Ocean Earths around M Stars". The Astrophysical Journal. 891 (1): 58. arXiv:1912.08235. Bibcode:2020ApJ...891...58S. doi:10.3847/1538-4357/ab72f9. S2CID 209405220.
- ^ a b c Martínez-Rodríguez, Héctor; Caballero, José Antonio; Cifuentes, Carlos; Piro, Anthony L.; Barnes, Rory (2019). "Exomoons in the Habitable Zones of M Dwarfs". The Astrophysical Journal. 887 (2): 261. arXiv:1910.12054. Bibcode:2019ApJ...887..261M. doi:10.3847/1538-4357/ab5640. S2CID 204904780.
- ^ a b c d e f "LHS 451 -- High proper-motion Star". Centre de Données astronomiques de Strasbourg. Archived from the original on 2020-02-03. Retrieved 2009-12-14.
- ^ Boro Saikia, S.; Marvin, C. J.; Jeffers, S. V.; Reiners, A.; Cameron, R.; Marsden, S. C.; Petit, P.; Warnecke, J.; Yadav, A. P. (2018). "Chromospheric activity catalogue of 4454 cool stars. Questioning the active branch of stellar activity cycles". Astronomy and Astrophysics. 616: 616. arXiv:1803.11123. Bibcode:2018A&A...616A.108B. doi:10.1051/0004-6361/201629518. S2CID 118915212.
- ^ a b c Maldonado, J.; Micela, G.; Baratella, M.; d'Orazi, V.; Affer, L.; Biazzo, K.; Lanza, A. F.; Maggio, A.; González Hernández, J. I.; Perger, M.; Pinamonti, M.; Scandariato, G.; Sozzetti, A.; Locci, D.; Di Maio, C.; Bignamini, A.; Claudi, R.; Molinari, E.; Rebolo, R.; Ribas, I.; Toledo-Padrón, B.; Covino, E.; Desidera, S.; Herrero, E.; Morales, J. C.; Suárez-Mascareño, A.; Pagano, I.; Petralia, A.; Piotto, G.; Poretti, E. (2020). "HADES RV programme with HARPS-N at TNG. XII. The abundance signature of M dwarf stars with planets". Astronomy and Astrophysics. 644: A68. arXiv:2010.14867. Bibcode:2020A&A...644A..68M. doi:10.1051/0004-6361/202039478. S2CID 225094682.
- ^ Hojjatpanah, S.; Figueira, P.; Santos, N. C.; Adibekyan, V.; Sousa, S. G.; Delgado-Mena, E.; Alibert, Y.; Cristiani, S.; González Hernández, J. I.; Lanza, A. F.; Di Marcantonio, P.; Martins, J. H. C.; Micela, G.; Molaro, P.; Neves, V.; Oshagh, M.; Pepe, F.; Poretti, E.; Rojas-Ayala, B.; Rebolo, R.; Suárez Mascareño, A.; Zapatero Osorio, M. R. (2019). "Catalog for the ESPRESSO blind radial velocity exoplanet survey". Astronomy and Astrophysics. 629: A80. arXiv:1908.04627. Bibcode:2019A&A...629A..80H. doi:10.1051/0004-6361/201834729. S2CID 199552090.
- ^ Reylé, Céline; Jardine, Kevin; Fouqué, Pascal; Caballero, Jose A.; Smart, Richard L.; Sozzetti, Alessandro (30 April 2021). "The 10 parsec sample in the Gaia era". Astronomy & Astrophysics. 650: A201. arXiv:2104.14972. Bibcode:2021A&A...650A.201R. doi:10.1051/0004-6361/202140985. S2CID 233476431. Data available at https://gruze.org/10pc/ Archived 2023-03-12 at the Wayback Machine
- ^ a b 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:1403.0430. Bibcode:2014MNRAS.441.1545T. doi:10.1093/mnras/stu358. S2CID 32965505.
- ^ "The Habitable Exoplanets Catalog". Planetary Habitability Laboratory. University of Puerto Rico at Arecibo. Archived from the original on 11 February 2018. Retrieved 7 October 2020.
- ^ Feng, Fabo; Butler, R. Paul; Shectman, Stephen A.; Crane, Jeffrey D.; Vogt, Steve; Chambers, John; Jones, Hugh R. A.; Wang, Sharon Xuesong; Teske, Johanna K.; Burt, Jenn; Díaz, Matías R.; Thompson, Ian B. (8 January 2020). "Search for Nearby Earth Analogs. II. Detection of Five New Planets, Eight Planet Candidates, and Confirmation of Three Planets around Nine Nearby M Dwarfs". The Astrophysical Journal Supplement Series. 246 (1): 11. arXiv:2001.02577. Bibcode:2020ApJS..246...11F. doi:10.3847/1538-4365/ab5e7c. S2CID 210064560.