Astronomy:Kepler-160
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Lyra |
| Right ascension | 19h 11m 05.6526s[1] |
| Declination | +42° 52′ 09.4725″[1] |
| Apparent magnitude (V) | 13.101 |
| Characteristics | |
| Evolutionary stage | G2V |
| J−H color index | 0.359 |
| J−K color index | 0.408 |
| Variable type | ROT, Planetary transit |
| Astrometry | |
| Proper motion (μ) | RA: 3.476±0.032[1] mas/yr Dec.: -5.212±0.035[1] mas/yr |
| Parallax (π) | 1.0385 ± 0.0183 mas |
| Distance | 3,140 ± 60 ly (960 ± 20 pc) |
| Details | |
| Radius | 1.118+0.015−0.045[2] R☉ |
| Luminosity | 1.01±0.05[2] L☉ |
| Surface gravity (log g) | 4.515[3] cgs |
| Temperature | 5471+115−37[2] K |
| Metallicity [Fe/H] | -0.361 dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
Kepler-160 is a main-sequence 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,[3][2] has three confirmed planets and one unconfirmed planet orbiting it.
Characteristics
The star Kepler-160 is rather old, having no detectable circumstellar disk.[4] The star's metallicity is unknown, with conflicting values of either 40% or 160% of solar metallicity reported.[5][6]
Of this system (and all others) the Breakthrough Listen search for extraterrestrial intelligence found no potential technosignatures.[7]
Planetary system
The two planetary candidates in the Kepler-160 system were discovered in 2010, published in early 2011[8] and confirmed in 2014.[9] The planets Kepler-160b and Kepler-160c are not in orbital resonance despite their orbital periods ratio being close to 1:3.[10]
An additional rocky transiting planet candidate KOI-456.04, located in the habitable zone, was detected in 2020,[2] 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.[11] 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.[2]
| 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⊕ |
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Kepler-160 -- Rotationally variable Star
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Heller, René; Hippke, Michael; Freudenthal, Jantje; Rodenbeck, Kai; Batalha, Natalie M.; Bryson, Steve (2020). "Transit least-squares survey". Astronomy & Astrophysics 638: A10. doi:10.1051/0004-6361/201936929. Bibcode: 2020A&A...638A..10H.
- ↑ 3.0 3.1 Borucki, William J.; Koch, David G.; Basri, Gibor; Batalha, Natalie; Boss, Alan; Brown, Timothy M.; Caldwell, Douglas; Christensen-Dalsgaard, Jørgen et al. (2011). "Characteristics Ofkeplerplanetary Candidates Based on the First Data Set". The Astrophysical Journal 728 (2): 117. doi:10.1088/0004-637X/728/2/117. Bibcode: 2011ApJ...728..117B.
- ↑ Lawler, S. M.; Gladman, B. (2012). "Debris Disks Inkeplerexoplanet Systems". The Astrophysical Journal 752 (1): 53. doi:10.1088/0004-637X/752/1/53. Bibcode: 2012ApJ...752...53L.
- ↑ Rowe, Jason F.; Bryson, Stephen T.; Marcy, Geoffrey W.; Lissauer, Jack J.; Jontof-Hutter, Daniel; Mullally, Fergal; Gilliland, Ronald L.; Issacson, Howard et al. (2014). "Validation Ofkepler's Multiple Planet Candidates. III. Light Curve Analysis and Announcement of Hundreds of New Multi-Planet Systems". The Astrophysical Journal 784 (1): 45. doi:10.1088/0004-637X/784/1/45. Bibcode: 2014ApJ...784...45R.
- ↑ Petigura, Erik A.; Howard, Andrew W.; Marcy, Geoffrey W.; Johnson, John Asher; Isaacson, Howard; Cargile, Phillip A.; Hebb, Leslie; Fulton, Benjamin J. et al. (2017). "The California-Kepler Survey. I. High-resolution Spectroscopy of 1305 Stars HostingKepler Transiting Planets". The Astronomical Journal 154 (3): 107. doi:10.3847/1538-3881/aa80de. Bibcode: 2017AJ....154..107P.
- ↑ Perez, Karen; Brzycki, Bryan; Gajjar, Vishal; Isaacson, Howard; Siemion, Andrew; Croft, Steve; DeBoer, David; Lebofsky, Matt et al. (2020), "Breakthrough Listen Search for Technosignatures Towards the Kepler-160System", Research Notes of the American Astronomical Society 4 (6): 97, doi:10.3847/2515-5172/ab9f36, Bibcode: 2020RNAAS...4...97P
- ↑ Lissauer, Jack J.; Ragozzine, Darin; Fabrycky, Daniel C.; Steffen, Jason H.; Ford, Eric B.; Jenkins, Jon M.; Shporer, Avi; Holman, Matthew J. et al. (2011). "Architecture and Dynamics of Kepler 's Candidate Multiple Transiting Planet Systems". The Astrophysical Journal Supplement Series 197 (1): 8. doi:10.1088/0067-0049/197/1/8. Bibcode: 2011ApJS..197....8L.
- ↑ Planet Kepler-160 b on exoplanet.eu
- ↑ Veras, Dimitri; Ford, Eric B. (2012). "Identifying non-resonant Kepler planetary systems". Monthly Notices of the Royal Astronomical Society: Letters 420 (1): L23–L27. doi:10.1111/j.1745-3933.2011.01185.x. Bibcode: 2012MNRAS.420L..23V.
- ↑ Patel, Neel V. (2020-06-05). "Astronomers have found a planet like Earth orbiting a star like the sun" (in en). https://www.technologyreview.com/2020/06/05/1002831/kepler-160-koi-456-04-earth-sun-exoplanet-habitable/.
Coordinates: 
19h 11m 05.6526s, +42° 52′ 09.4725″
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