Kepler-289
A disputed three-planet system with a citizen-science discovery.
Last updated
Kepler-289 (PH3) is a G2-type rotating variable star slightly more massive than the Sun, located 2370 light-years away in Cygnus. It hosts three transiting exoplanets discovered by the Kepler space telescope, with two confirmed in 2014 and a third identified by the Planet Hunters citizen science project. The system's orbital configuration is disputed: some studies report a 66-day period for planet d, while a 2025 study instead describes a 330-day planet and states the 66-day signal is no longer believed to exist.
Quick Facts
- Spectral type
- G2
- Distance from earth
- 2370 light-years
- Constellation
- Cygnus
- Number of confirmed planets
- 3
- Discovery method
- Transit (Kepler space telescope)
- Alternative designation
- PH3
Facts from the source article.
More in Planetary Systems with Three Confirmed Planets
Sources
Compiled from Wikipedia and the sources listed below. Text from Wikipedia is available under CC BY-SA 4.0; this entry is adapted from it.
- Wikipedia: Kepler-289 (CC BY-SA 4.0).
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