Kepler-45, formerly known as KOI-254, is a
star
A star is an astronomical object comprising a luminous spheroid of plasma (physics), plasma held together by its gravity. The List of nearest stars and brown dwarfs, nearest star to Earth is the Sun. Many other stars are visible to the naked ...
in the northern
constellation
A constellation is an area on the celestial sphere in which a group of visible stars forms Asterism (astronomy), a perceived pattern or outline, typically representing an animal, mythological subject, or inanimate object.
The origins of the e ...
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 of 16.88,
[ this star is too faint to be seen with the naked eye.
The star is exhibiting strong starspot activity, with 4.1% of its surface covered by starspots.
]
Planetary system
The "Hot Jupiter" class planet Kepler-45b, discovered in February 2011,
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See also
*NGTS-1b
NGTS-1b is a confirmed hot Jupiter-sized extrasolar planet orbiting NGTS-1, a red dwarf star about half the mass and radius of the Sun, every 2.65 days. The NGTS-1 system is about 716 light-years from Earth in the Columba constellation.
Dis ...
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
