HD 20781 b
 An artist's impression of HD 20781 b orbiting its host star. | |
| Discovery[2] | |
|---|---|
| Discovered by | Mayor et. al. |
| Discovery site | La Silla Observatory[1] |
| Discovery date | 2011 |
| Doppler spectroscopy (HARPS) | |
| Orbital characteristics[2] | |
| Periastron | 0.15 AU |
| Apoastron | 0.19 AU |
| 0.1647+0.0076 −0.0083 AU[3] | |
| Eccentricity | 0.11±0.06 |
| 29.15±0.02 d | |
| 2,455,511±2 JD[3] | |
| 60.99°+30.79° −30.03°[3] | |
| Physical characteristics | |
Mean radius | ~3.18 R
|