LHS 6343

LHS 6343
Observation data
Epoch J2000      Equinox J2000
Constellation Lyra
Right ascension 19h 10m 14.354s[1]
Declination +46° 57′ 26.14″[1]
Apparent magnitude (V) 13.435
(13.88 / 14.63)[2]
Characteristics
LHS 6343 A
Spectral type M4V[3] / T1.5[4]
B−V color index 1.57 ± 0.07[2]
LHS 6343 B
Spectral type M5V[3]
B−V color index 1.60 ± 0.07[2]
Astrometry
Proper motion (μ) RA: -76.59[5] mas/yr
Dec.: -176.78[5] mas/yr
Distance119.4 ± 3.6[2] ly
(36.6 ± 1.1[2] pc)
Orbit[6]
Period (P)12.7137941 ± 0.0000002 d
Semi-major axis (a)0.0797 ± 0.0008 AU
Eccentricity (e)0.030 ± 0.002
Inclination (i)90.45 ± 0.03°
Periastron epoch (T)JD 2455008.07259 ± 0.00001
Argument of periastron (ω)
(secondary)		320 ± 4°
Semi-amplitude (K1)
(primary)		9.69 ± 0.02 km/s
Details
LHS 6343 A
Mass0.358 ± 0.011[6] M☉
Radius0.373 ± 0.005[6] R☉
Surface gravity (log g)4.851 ± 0.008[2] cgs
Temperature3431 ± 21[6] K
Metallicity [Fe/H]0.04 ± 0.08[2] dex
Rotation13.137 ± 0.011[2]
LHS 6343 B
Mass0.292 ± 0.013[6] M☉
Radius0.394 ± 0.012[6] R☉
Temperature3354 ± 17[6] K
Metallicity [Fe/H]0.04 ± 0.08[2] dex
LHS 6343 C
Mass62.1 ± 1.2[6] MJup
Radius0.783 ± 0.011[6] RJup
Luminosity6.91×10−6[7] L☉
Surface gravity (log g)5.35 ± 0.02[2] cgs
Temperature1130 ± 50[7] K
Age5 ± 1[7] Gyr
Other designations
KOI-959, KIC 10002261, G 205-57, 2MASS J19101435+4657261
Database references
SIMBADLHS 6343
LHS 6343 A
LHS 6343 B
LHS 6343 C

LHS 6343 is a star system in the northern constellation of Lyra. It appears exceedingly faint with a combined apparent magnitude of 13.435.[2] Based on its stellar properties, the system is thought to be about 119.4 light-years (36.6 parsecs) away.[2]

LHS 6343 is a binary star with two red dwarfs, designated LHS 6343 A and B, respectively. A brown dwarf orbits LHS 6343 A at a close distance, and periodically transits it.[2] The brown dwarf, designated LHS 6343 C, is located within the brown dwarf desert, a zone around stars where very few brown dwarfs have been discovered.[2]

The system was in the field of view of the Kepler spacecraft,[2] and was monitored continuously for possible planets transiting the star, although the transits were found to be caused by LHS 6343 C.[2]

  1. ^ a b Cutri, Roc M.; Skrutskie, Michael F.; Van Dyk, Schuyler D.; Beichman, Charles A.; Carpenter, John M.; Chester, Thomas; Cambresy, Laurent; Evans, Tracey E.; Fowler, John W.; Gizis, John E.; Howard, Elizabeth V.; Huchra, John P.; Jarrett, Thomas H.; Kopan, Eugene L.; Kirkpatrick, J. Davy; Light, Robert M.; Marsh, Kenneth A.; McCallon, Howard L.; Schneider, Stephen E.; Stiening, Rae; Sykes, Matthew J.; Weinberg, Martin D.; Wheaton, William A.; Wheelock, Sherry L.; Zacarias, N. (2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". CDS/ADC Collection of Electronic Catalogues. 2246: II/246. Bibcode:2003yCat.2246....0C.
  2. ^ a b c d e f g h i j k l m n o p Johnson, John Asher; Apps, Kevin; Gazak, J. Zachary; Crepp, Justin R.; Crossfield, Ian J.; Howard, Andrew W.; Marcy, Geoff W.; Morton, Timothy D.; Chubak, Carly; Isaacson, Howard (2011). "LHS 6343 C: A Transiting Field Brown Dwarf Discovered by The Kepler Mission". The Astrophysical Journal. 730 (2): 79. arXiv:1008.4141. Bibcode:2011ApJ...730...79J. doi:10.1088/0004-637X/730/2/79. S2CID 50850728.
  3. ^ a b Herrero, E.; Lanza, A. F.; Ribas, I.; Jordi, C.; Morales, J. C. (2013). "Photospheric activity, rotation, and magnetic interaction in LHS 6343 A". Astronomy & Astrophysics. 553: A66. arXiv:1303.7106. Bibcode:2013A&A...553A..66H. doi:10.1051/0004-6361/201220518. S2CID 62809852.
  4. ^ Frost, William; Albert, Loïc; Doyon, René; Gagné, Jonathan; Montet, Benjamin T.; Fontanive, Clémence; Artigau, Étienne; Johnson, John Asher; Edwards, Billy; Benneke, Björn (2024). "Revisiting Physical Parameters of the Benchmark Brown Dwarf LHS 6343 C through a Hubble Space Telescope/WFC3 Secondary-eclipse Observation". The Astrophysical Journal. 972 (2): 199. arXiv:2408.05173. Bibcode:2024ApJ...972..199F. doi:10.3847/1538-4357/ad5da7.
  5. ^ a b Lépine, Sébastien; Shara, Michael M. (2005). "A Catalog of Northern Stars with Annual Proper Motions Larger than 0."15 (LSPM-NORTH Catalog)". The Astronomical Journal. 129 (3): 1483–1522. arXiv:astro-ph/0412070. Bibcode:2005AJ....129.1483L. doi:10.1086/427854. S2CID 2603568.
  6. ^ a b c d e f g h i Montet, Benjamin T.; Johnson, John Asher; Muirhead, Philip S.; Villar, Ashley; Vassallo, Corinne; Baranec, Christoph; Law, Nicholas M.; Riddle, Reed; Marcy, Geoffrey W.; Howard, Andrew W.; Isaacson, Howard (2015). "Characterizing the Cool KOIs. VII. Refined Physical Properties of the Transiting Brown Dwarf LHS 6343 C". The Astrophysical Journal. 800 (2): 134. arXiv:1411.4047. Bibcode:2015ApJ...800..134M. doi:10.1088/0004-637X/800/2/134. S2CID 555496.
  7. ^ a b c Montet, Benjamin T.; Johnson, John Asher; Fortney, Jonathan J.; Desert, Jean-Michel (2016). "Benchmark Transiting Brown Dwarf LHS 6343 C: Spitzer Secondary Eclipse Observations Yield Brightness Temperature and Mid-T Spectral Class". The Astrophysical Journal. 822 (1): L6. arXiv:1603.09343. Bibcode:2016ApJ...822L...6M. doi:10.3847/2041-8205/822/1/L6. S2CID 217631478.