The Kepler-1721 system contains 1 exoplanet. It is located 2091.88 light years away from the solar system.
| Mass | 0.89 solar masses |
| Radius | 0.8 solar radiae |
| Temperature | 5351 kelvin |
| Stellar Metallicity | -0.04 decimal exponent |
| Age | 0.7 billion years |
At more than 10 Earth masses, Kepler-1721 b is an ice giant, a planet that is made up mostly of volatiles like water, amonia and methane, and enveloped by a dense hydrogen and helium atmosphere, much like Uranus and Neptune.
| Mass | 9.900 Earth masses |
| Density | 1.790 grams per cubic centimeter |
| Radius | 3.119 Earth radiae |
| Semi-major Axis | 0.0519 AU |
| Eccentricity | 0 |
| Orbital Period | 4.592 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2022-02 |
| Reference | Valizadegan et al. 2022 |