Kepler-160
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.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| 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 |
Characteristics Edit
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 Edit
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 Edit
References Edit
- ^ a b c d e Kepler-160 -- Rotationally variable Star
- ^ a b c d e f g Heller, René; Hippke, Michael; Freudenthal, Jantje; Rodenbeck, Kai; Batalha, Natalie M.; Bryson, Steve (2020). "Transit least-squares survey". Astronomy & Astrophysics. 638: A10. arXiv:2006.02123. doi:10.1051/0004-6361/201936929. S2CID 219260293.
- ^ a b Borucki, William J.; Koch, David G.; Basri, Gibor; Batalha, Natalie; Boss, Alan; Brown, Timothy M.; Caldwell, Douglas; Christensen-Dalsgaard, Jørgen; Cochran, William D.; Devore, Edna; Dunham, Edward W.; Dupree, Andrea K.; Gautier Iii, Thomas N.; Geary, John C.; Gilliland, Ronald; Gould, Alan; Howell, Steve B.; Jenkins, Jon M.; Kjeldsen, Hans; Latham, David W.; Lissauer, Jack J.; Marcy, Geoffrey W.; Monet, David G.; Sasselov, Dimitar; Tarter, Jill; Charbonneau, David; Doyle, Laurance; Ford, Eric B.; Fortney, Jonathan; et al. (2011). "Characteristics Ofkeplerplanetary Candidates Based on the First Data Set". The Astrophysical Journal. 728 (2): 117. arXiv:1006.2799. Bibcode:2011ApJ...728..117B. doi:10.1088/0004-637X/728/2/117. S2CID 93116.
- ^ Lawler, S. M.; Gladman, B. (2012). "Debris Disks Inkeplerexoplanet Systems". The Astrophysical Journal. 752 (1): 53. arXiv:1112.0368. Bibcode:2012ApJ...752...53L. doi:10.1088/0004-637X/752/1/53. S2CID 119215667.
- ^ Rowe, Jason F.; Bryson, Stephen T.; Marcy, Geoffrey W.; Lissauer, Jack J.; Jontof-Hutter, Daniel; Mullally, Fergal; Gilliland, Ronald L.; Issacson, Howard; Ford, Eric; Howell, Steve B.; Borucki, William J.; Haas, Michael; Huber, Daniel; Steffen, Jason H.; Thompson, Susan E.; Quintana, Elisa; Barclay, Thomas; Still, Martin; Fortney, Jonathan; Gautier, T. N.; Hunter, Roger; Caldwell, Douglas A.; Ciardi, David R.; Devore, Edna; Cochran, William; Jenkins, Jon; Agol, Eric; Carter, Joshua A.; Geary, John (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. arXiv:1402.6534. Bibcode:2014ApJ...784...45R. doi:10.1088/0004-637X/784/1/45. S2CID 119118620.
- ^ Petigura, Erik A.; Howard, Andrew W.; Marcy, Geoffrey W.; Johnson, John Asher; Isaacson, Howard; Cargile, Phillip A.; Hebb, Leslie; Fulton, Benjamin J.; Weiss, Lauren M.; Morton, Timothy D.; Winn, Joshua N.; Rogers, Leslie A.; Sinukoff, Evan; Hirsch, Lea A.; Crossfield, Ian J. M. (2017). "The California-Kepler Survey. I. High-resolution Spectroscopy of 1305 Stars HostingKepler Transiting Planets". The Astronomical Journal. 154 (3): 107. arXiv:1703.10400. Bibcode:2017AJ....154..107P. doi:10.3847/1538-3881/aa80de. S2CID 55183141.
- ^ Perez, Karen; Brzycki, Bryan; Gajjar, Vishal; Isaacson, Howard; Siemion, Andrew; Croft, Steve; DeBoer, David; Lebofsky, Matt; MacMahon, David H. E.; Price, Danny C.; Sheikh, Sofia; Drew, Jamie; Pete Worden, S. (2020), "Breakthrough Listen Search for Technosignatures Towards the Kepler-160System", Research Notes of the American Astronomical Society, 4 (6): 97, arXiv:2006.13789, Bibcode:2020RNAAS...4...97P, doi:10.3847/2515-5172/ab9f36, S2CID 220042074
- ^ Lissauer, Jack J.; Ragozzine, Darin; Fabrycky, Daniel C.; Steffen, Jason H.; Ford, Eric B.; Jenkins, Jon M.; Shporer, Avi; Holman, Matthew J.; Rowe, Jason F.; Quintana, Elisa V.; Batalha, Natalie M.; Borucki, William J.; Bryson, Stephen T.; Caldwell, Douglas A.; Carter, Joshua A.; Ciardi, David; Dunham, Edward W.; Fortney, Jonathan J.; Gautier, Iii, Thomas N.; Howell, Steve B.; Koch, David G.; Latham, David W.; Marcy, Geoffrey W.; Morehead, Robert C.; Sasselov, Dimitar (2011). "Architecture and Dynamics of Kepler 's Candidate Multiple Transiting Planet Systems". The Astrophysical Journal Supplement Series. 197 (1): 8. arXiv:1102.0543. Bibcode:2011ApJS..197....8L. doi:10.1088/0067-0049/197/1/8. S2CID 43095783.
- ^ 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. arXiv:1111.0299. Bibcode:2012MNRAS.420L..23V. doi:10.1111/j.1745-3933.2011.01185.x. S2CID 55625425.
- ^ Patel, Neel V. (2020-06-05). "Astronomers have found a planet like Earth orbiting a star like the sun". MIT Technology Review. Retrieved 2020-06-07.
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