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A K-type main-sequence star, also referred to as a K-type dwarf, or orange dwarf, is a main-sequence (hydrogen-burning) star of spectral type K and luminosity class V. These stars are intermediate in size between red M-type main-sequence stars ("red dwarfs") and yellow/white G-type main-sequence stars .
K-type main-sequence stars, also known as orange dwarfs, may be candidates for supporting extraterrestrial life.These stars are known as "Goldilocks stars" as they emit enough radiation in the non-UV ray spectrum [1] to provide a temperature that allows liquid water to exist on the surface of a planet; they also remain stable in the main sequence longer than the Sun by burning their hydrogen ...
English. Read; Edit; View history; Tools. ... TrES-1 Parent Star, ... GSC 02652-01324 is an orange dwarf main sequence star approximately 521 light-years away in the ...
When 54 Piscium B was directly imaged by NASA's Spitzer Space Telescope, it was shown that the brown dwarf had a projected separation of around 476 astronomical units from the primary star. [11] 54 Piscium B was the first brown dwarf to be detected around a star with an already known extrasolar planet (based on radial velocity surveys).
The Hertzsprung–Russell diagram showing the location of main sequence dwarf stars and white dwarfs. A dwarf star is a star of relatively small size and low luminosity. Most main sequence stars are dwarf stars. The meaning of the word "dwarf" was later extended to some star-sized objects that are not stars, and compact stellar remnants that ...
HR 511 (also designated V987 Cassiopeiae and Gliese 75 among others) is an orange dwarf of spectral type K0V in the constellation Cassiopeia. With an apparent magnitude of 5.63, [2] it is faintly visible to the naked eye. The star is relatively close, 32.8 light years from the Sun. [1]
The star has active latitudes that generate starspots. [7] The spots are similar in distribution to those on the Sun, but HAT-P-11 is a more active star and has a starspot coverage approximately 100 times greater than the Sun. [8] The star appears to have an unusually small radius, which can be explained by the anomalously high helium fraction. [9]
The planet orbits the faint orange dwarf star [a] KOI-5715, which has a spectral type of K3V. [8] It is located approximately 2,964 light-years from Earth in the constellation of Cygnus. [ 9 ] The effective temperature of the star is roughly 5123 K, [ 1 ] relatively cooler than the Sun's temperature of 5780 K. [ 10 ] KOI-5715 is also smaller ...