Kepler-296

Kepler-296 is a binary star system[4] in the constellation Draco. The primary star appears to be a late K-type main-sequence star, while the secondary is a red dwarf.[2] Five exoplanets have been detected around the system; all are believed to be orbiting the primary star rather than its dimmer companion.[4] Two planets in particular, Kepler-296e and Kepler-296f, are likely located in the habitable zone.[4]

The Kepler-296 planetary system[4]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b — 0.079 10.864384 — — 1.61 R⊕
c — 0.0521 5.8416366 — — 2.00 R⊕
d — 0.118 19.850291 — — 2.09 R⊕
e — 0.169 34.14211 — — 1.53 R⊕
f — 0.255 63.33627 — — 1.80 R⊕
Kepler-296
Observation data
Epoch J2000      Equinox J2000
Constellation Draco
Right ascension  19h 06m 09.602s[1]
Declination +49° 26′ 14.37″[1]
Characteristics
Spectral type K7 V + M1 V[2]
Astrometry
Proper motion (μ) RA: 2.0[3] mas/yr
Dec.: −8.0[3] mas/yr
Details[4]
Kepler-296 A
Mass0.498+0.067
−0.087 M☉
Radius0.480+0.066
−0.087 R☉
Surface gravity (log g)4.774+0.091
−0.059 cgs
Temperature3740±130 K
Metallicity [Fe/H]−0.08+0.28
−0.30 dex
Kepler-296 B
Mass0.326+0.070
−0.079 M☉
Radius0.322+0.060
−0.068 R☉
Surface gravity (log g)4.993+0.087
−0.063 cgs
Temperature3440±75 K
Other designations
KOI-1422, KIC 11497958[5]
Database references
SIMBADdata
KICdata

See also

References
  1. Cutri, R. M. (2003). "2MASS All-Sky Catalog of Point Sources". VizieR On-line Data Catalog. 2246. Bibcode:2003yCat.2246....0C.
  2. Lissauer, Jack J; Marcy, Geoffrey W; Bryson, Stephen T; Rowe, Jason F; Jontof-Hutter, Daniel; Agol, Eric; Borucki, William J; Carter, Joshua A; Ford, Eric B; Gilliland, Ronald L; Kolbl, Rea; Star, Kimberly M; Steffen, Jason H; Torres, Guillermo (2014). "Validation Ofkepler's Multiple Planet Candidates. Ii. Refined Statistical Framework and Descriptions of Systems of Special Interest". The Astrophysical Journal. 784: 44. arXiv:1402.6352. Bibcode:2014ApJ...784...44L. doi:10.1088/0004-637X/784/1/44.
  3. Kepler Mission Team (2009). "VizieR Online Data Catalog: Kepler Input Catalog". VizieR On-line Data Catalog. 5133. Bibcode:2009yCat.5133....0K.
  4. Barclay, Thomas; Quintana, Elisa V; Adams, Fred C; Ciardi, David R; Huber, Daniel; Foreman-Mackey, Daniel; Montet, Benjamin T; Caldwell, Douglas (2015). "The Five Planets in the Kepler-296 Binary System All Orbit the Primary: A Statistical and Analytical Analysis". The Astrophysical Journal. 809: 7. arXiv:1505.01845. Bibcode:2015ApJ...809....7B. doi:10.1088/0004-637X/809/1/7.
  5. "Kepler-296". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 26 November 2017.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.