Kepler-160
Star
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Kepler-160 is a G-type subgiant star approximately the width of our Galactic arm away in the constellation Lyra, first studied in detail by the Kepler Mission, a NASA-led operation tasked with discovering terrestrial planets. The star, which is very similar to the Sun in mass and radius,[8][5] has three confirmed planets and one unconfirmed planet orbiting it.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lyra[1] |
| Right ascension | 19h 11m 05.6526s[2] |
| Declination | +42° 52′ 09.473″[2] |
| Apparent magnitude (V) | 13.101 |
| Characteristics | |
| Evolutionary stage | subgiant[2] |
| Spectral type | G5[3] |
| J−H color index | 0.359 |
| J−K color index | 0.408 |
| Variable type | ROT, Planetary transit |
| Astrometry | |
| Proper motion (μ) | RA: 3.477(16) mas/yr[2] Dec.: −5.233(19) mas/yr[2] |
| Parallax (π) | 1.0644±0.0154 mas[2] |
| Distance | 3,060 ± 40 ly (940 ± 10 pc) |
| Details | |
| Mass | 1.01[4] M☉ |
| Radius | 1.118+0.015 −0.045[5] R☉ |
| Luminosity | 1.01±0.05[5] L☉ |
| Surface gravity (log g) | 4.33[4] cgs |
| Temperature | 5471+115 −37[5] K |
| Metallicity [Fe/H] | 0.26[6] dex |
| Rotation | 77 days[4] |
| Rotational velocity (v sin i) | 1.3[4] km/s |
| Age | 8[4] Gyr |
| Other designations | |
| KOI-456, KIC 7269974, 2MASS J19110565+4252094, Gaia DR3 2102587087846067712[7] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| KIC | data |
Characteristics
The star Kepler-160 is rather old, having no detectable circumstellar disk.[9] The star's metallicity is unknown, with conflicting values of either 40% or 160% of solar metallicity reported.[10][11]
Despite having at least one potentially Earth-like planet (KOI-456.04), the Breakthrough Listen search for extraterrestrial intelligence found no potential technosignatures.[12]
Planetary system
The two planetary candidates in the Kepler-160 system were discovered in 2010, published in early 2011[13] and confirmed in 2014.[14] The planets Kepler-160b and Kepler-160c are not in orbital resonance despite their orbital periods ratio being close to 1:3.[15]
An additional rocky transiting planet candidate KOI-456.04, located in the habitable zone, was detected in 2020,[5] and more non-transiting planets are suspected due to residuals in the solution for the transit timing variations. From what researchers can tell, KOI-456.04 looks to be less than twice the size of Earth and is apparently orbiting Kepler-160 at about the same distance from Earth to the sun (one complete orbit is 378 days). Perhaps most important, it receives about 93% as much light as Earth gets from the sun.[16] Nontransiting planet candidate Kepler-160d has a mass between about 1 and 100 Earth masses and an orbital period between about 7 and 50 d.[5]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | — | 0.05511+0.0019 −0.0037 |
4.309397+0.000013 −0.000012 |
0 | — | 1.715+0.061 −0.047 R🜨 |
| c | — | 0.1192+0.004 −0.008 |
13.699429±0.000018 | 0 | — | 3.76+0.23 −0.09 R🜨 |
| d | 1—100 M🜨 | — | 7—50 | — | — | — |
| e (unconfirmed) | — | 1.089+0.037 −0.073 |
378.417+0.028 −0.025 |
0 | — | 1.91+0.17 −0.14 R🜨 |