Kepler-186 is a main-sequence M1-type dwarf star, located 177.5 parsecs (579 light years) away in the constellation of Cygnus.
Kepler-186 adalah bintang katai tipe-1 M urutan-utama, yang terletak 178,5 parsec (582 tahun cahaya) di rasi Cygnus .
It is known to have five planets, including the first Earth-sized world discovered in the habitable zone: Kepler-186f.
Bintang ini diketahui memiliki lima planet, termasuk planet seukuran Bumi pertama yang ditemukan di zona laik huni : Kepler-186f.
Discussion of planets in the system was taking place in August and November 2013.
Diskusi planet-planet dalam sistem berlangsung pada Agustus dan November 2013.
In February 2014, those planets were confirmed through the "verification by multiplicity" method.
Pada bulan Februari 2014, planet-planet itu dikonfirmasi melalui metode "verifikasi dengan multiplisitas".
The fifth outermost candidate was confirmed in the same manner in April 2014.
Kandidat terluar kelima dikonfirmasi dengan cara yang sama pada bulan April 2014.
As the Kepler space telescope observational campaign progressed initial identifications of systems were entered in the Kepler Input Catalog (KIC), and then progressed as a candidate host of planets as Kepler Object of Interest (KOI).
Ketika kampanye pengamatan teleskop Kepler berkembang, identifikasi awal sistem dimasukkan dalam Katalog Input Kepler (KIC), dan kemudian berkembang sebagai calon host planet sebagai Kepler Object of Interest (KOI).
Thus Kepler-186 started as KIC 8120608 and then was identified as KOI 571.
Jadi Kepler 186 dimulai sebagai KIC 8120608 dan kemudian diidentifikasi sebagai KOI 571 .
Outside of the Kepler project, the 2MASS survey catalogued this star as 2MASS J19543665+4357180.
Di luar proyek Kepler, survei 2MASS membuat katalog bintang ini sebagai 2MASS J19543665 + 4357180 .
A number of previously unknown measurements of the star are known.
Sejumlah pengukuran bintang yang sebelumnya tidak diketahui.
In the infrared/microwave EM spectrum its H band magnitude is 11.605, J band magnitude is 12.473, and its K band magnitude is 11.605.
Dalam spektrum inframerah / gelombang mikro magnitudo band H -nya adalah 11.605, magnitudo band J adalah 12.473, dan magnitudo K band-nya adalah 11.605.
In the visual Photometric system magnitude it is 14.90(R)(towards the red end of the visual spectrum) and 16.40(B)(the blue end of the spectrum)
Dalam sistem fotometrik visual besarnya adalah 14,90 (R) (menuju ujung merah spektrum visual) dan 16,40 (B) (ujung biru spektrum) (lihat juga magnitudo semu . )
It is a BY Draconis variable changing brightness slightly, probably from star-spots, with a period of 33.695 days.
Ini adalah variabel BY Draconis yang mengubah kecerahan sedikit, mungkin dari starspots, dengan periode 33.695 hari.
The five planets discovered around Kepler-186 are all expected to have a solid surface.
Kelima planet yang ditemukan di sekitar Kepler-186 semuanya diharapkan memiliki permukaan yang kokoh.
The smallest one, Kepler-186b, is only 8% larger than Earth, while the largest one, Kepler-186d, is almost 40% larger.
Yang terkecil, Kepler-186b, hanya 8% lebih besar dari Bumi, sedangkan yang terbesar, Kepler-186d, hampir 40% lebih besar.
The four innermost planets are probably tidally locked, but Kepler-186f is farther out, where the star's tidal effects are much weaker, so there may not have been enough time for its spin to slow down that much.
Keempat planet terdalam mungkin terkunci secara tidal, tetapi Kepler-186f lebih jauh, di mana efek pasang surut bintang jauh lebih lemah, sehingga mungkin tidak ada cukup waktu bagi putarannya untuk memperlambat sebanyak itu.
Because of the very slow evolution of red dwarf stars, the age of the Kepler-186 system is poorly constrained, although it is likely to be greater than a few billion years.
Karena evolusi bintang katai merah yang sangat lambat, usia sistem Kepler-186 sangat terbatas, meskipun kemungkinan lebih besar dari beberapa miliar tahun.
Planetary formation simulations have also shown that there could be one additional non-transiting low-mass planet between Kepler-186e and Kepler-186f.
Simulasi pembentukan planet juga menunjukkan bahwa mungkin ada satu planet bermassa rendah non-transit tambahan antara Kepler-186e dan Kepler-186f.
If this planet exists, it is likely not much more massive than Earth.
Jika planet ini ada, kemungkinan tidak jauh lebih besar dari Bumi.
If it were, its gravitational influence would likely prevent Kepler-186f from transiting.
Jika ya, pengaruh gravitasinya kemungkinan akan mencegah Kepler-186f dari transit.
Kepler-62 Gliese 667 TRAPPIST-1 Proxima Centauri b K-type main-sequence star Red dwarf Kepler-442 Barnard's Star First Potentially Habitable Terran World, PHL NASA's Kepler Discovers First Earth-Size Planet In The 'Habitable Zone' of Another Star, NASA, April 17, 2014 Kepler-186 at The NASA Exoplanet Archive
Kepler-62 Gliese 667 First Potentially Habitable Terran World Diarsipkan 2014-04-19 di Wayback Machine., PHL NASA's Kepler Discovers First Earth-Size Planet In The 'Habitable Zone' of Another Star, NASA, April 17, 2014 Kepler-186 at The NASA Exoplanet Archive