Kepler-45, formerly known as KOI-254, is a
star in the northern
constellation of
Cygnus. It is located at the
celestial coordinates
Astronomical coordinate systems are organized arrangements for specifying positions of satellites, planets, stars, galaxies, and other celestial objects relative to physical reference points available to a situated observer (e.g. the true hor ...
: right ascension , declination .
With an
apparent visual magnitude
Apparent magnitude () is a measure of the brightness of a star or other astronomical object observed from Earth. An object's apparent magnitude depends on its intrinsic luminosity, its distance from Earth, and any extinction of the object's lig ...
of 16.88,
[ this star is too faint to be seen with the naked eye.
The star is exhibiting strong ]starspot
Starspots are stellar phenomena, so-named by analogy with sunspots.
Spots as small as sunspots have not been detected on other stars, as they would cause undetectably small fluctuations in brightness. The commonly observed starspots are in gene ...
activity, with 4.1% of its surface covered by starspots.
Planetary system
The "Hot Jupiter" class planet Kepler-45b, discovered in February 2011,
/ref>
See also
* NGTS-1b
References
{{Stars of Cygnus
Cygnus (constellation)
M-type main-sequence stars
254
Year 254 ( CCLIV) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Valerianus and Gallienus (or, less frequently, year 1007 ''Ab urbe ...
Planetary transit variables
Planetary systems with one confirmed planet
J19312949+4103513