HD 28254 b
HD 28254 b (also known as HIP 20606 b) is an exoplanet which orbits the G-type main sequence star HD 28254, located 180 light-years away in the constellation Dorado.
| Discovery | |
|---|---|
| Discovered by | Naef et al. |
| Discovery site | La Silla Observatory |
| Discovery date | October 19, 2009 |
| radial velocity (HARPS) | |
| Orbital characteristics | |
| Apastron | 4.78 AU |
| Periastron | 0.12 AU |
| 2.45+0.03 −0.04 AU | |
| Eccentricity | 0.95+0.03 −0.04 |
| 1,333±4 d 3.65±0.01 yr | |
| Inclination | 21°+38° −11° or 162°+7° −27° |
| 248°+53° −33° or 163°+38° −36° | |
| 2,454,246+9 −10 JD | |
| 289°+20° −18° | |
| Semi-amplitude | 37.3+5.1 −0.9 m/s |
| Star | HD 28254 |
| Physical characteristics | |
| Mass | 3.8+3.0 −2.2 MJ |
| Temperature | 207+13 −40 K |
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