The GJ 687 system contains 2 exoplanets. It is located 14.84 light years away from the solar system.
| Mass | 0.4 solar masses |
| Radius | 0.42 solar radiae |
| Temperature | 3413 kelvin |
| Stellar Metallicity | 0.063 decimal exponent |
| Age | - billion years |
At more than 10 Earth masses, GJ 687 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 | 17.200 Earth masses |
| Density | 1.170 grams per cubic centimeter |
| Radius | 4.320 Earth radiae |
| Semi-major Axis | 0.163 AU |
| Eccentricity | 0.17 |
| Orbital Period | 38.142 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Lick Observatory |
| Discovery Telescope | 2.4 m Automated Planet Finder Telescope |
| Discovery Instrument | Levy Spectrograph |
| Discovery Date | 2014-07 |
| Reference | Burt et al. 2014 |
At more than 10 Earth masses, GJ 687 c 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 | 16.000 Earth masses |
| Density | 1.240 grams per cubic centimeter |
| Radius | 4.140 Earth radiae |
| Semi-major Axis | 1.165 AU |
| Eccentricity | 0.4 |
| Orbital Period | 727.562 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Multiple Observatories |
| Discovery Telescope | Multiple Telescopes |
| Discovery Instrument | Multiple Instruments |
| Discovery Date | 2020-10 |
| Reference | Feng et al. 2020 |