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 | |
Mass | +0.067 −0.087 0.498 M☉ |
Radius | +0.066 −0.087 0.480 R☉ |
Surface gravity (log g) | +0.091 −0.059 4.774 cgs |
Temperature | ±130 3740 K |
Metallicity [Fe/H] | +0.28 −0.30 −0.08 dex |
Kepler-296 B | |
Mass | +0.070 −0.079 0.326 M☉ |
Radius | +0.060 −0.068 0.322 R☉ |
Surface gravity (log g) | +0.087 −0.063 4.993 cgs |
Temperature | ±75 3440 K |
Other designations | |
Database references | |
SIMBAD | data |
KIC | data |
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]
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⊕ |
See also
References
- 1 2 Cutri, R. M. (2003). "2MASS All-Sky Catalog of Point Sources". VizieR On-line Data Catalog. 2246. Bibcode:2003yCat.2246....0C.
- 1 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.
- 1 2 Kepler Mission Team (2009). "VizieR Online Data Catalog: Kepler Input Catalog". VizieR On-line Data Catalog. 5133. Bibcode:2009yCat.5133....0K.
- 1 2 3 4 5 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.
- ↑ "Kepler-296". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 26 November 2017.
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