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Gliese 682 c)
  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 |
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.
Search for planets
| 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
References
- ^ 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. 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/
- ^ 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. 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.
