NN Ser
NN Ser is a WD star 1,682 light years away with 2 known planets. They were all found in 2010. It has a companion star.
Open in 3DPlanets
| Planet | Orbital period | Distance from star | Radius (Earths) | Mass (Earths) | Found | Method |
|---|---|---|---|---|---|---|
| NN Ser d (disputed) | 7.885 years | 3.39 AU | at least 696 | 2010 | Eclipse Timing Variations | |
| NN Ser c (disputed) | 19.13 years | 5.35 AU | at least 3,086 | 2010 | Eclipse Timing Variations |
"At least" is a minimum mass. Radial velocity can only measure mass times the sine of the orbit's tilt.
Star
- Spectral type WD
- 57,000 K surface temperature
- 0.535 times the mass of the Sun
Data from the NASA Exoplanet Archive, as of October 3, 2026. In the 3D view sizes and distances are compressed and every orbit is drawn in the same plane. Where each planet sits along its orbit is made up.