Kepler-84 is a Sun-like star 3,339 light-years from the Sun. It is a F-type star. The stellar radius measurement has a large uncertainty of 48% as in 2017, complicating the modelling of the star. The Kepler-84 star has two suspected stellar companions. Four stars, all more than four magnitudes fainter than Kepler-84, are seen within a few arcseconds and at least one is probably gravitationally bound to Kepler-84. Another, which has only a 0.005% chance of being a background star, is a yellow star with mass at a projected separation of 0.18″ or 0.26″ (213.6 AU).
Planetary system Kepler-84 is orbited by five known planets, four small gas giants and a Super-Earth. Planets Kepler-84b and Kepler-84c were confirmed in 2012 while the rest was confirmed in 2014.openexoplanetcatalogue.com Kepler-84 To keep the known planetary system stable, no additional giant planets can be located within 7.4 AU from the parent stars.
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