| HD 10647 b | |
| Discoverer: | Mayor et al. |
| Discovery Site: |  Paris, France |
| Discovered: | 30 June 2003 |
| Apsis: | astron |
| Semimajor: | 2.03± |
| Eccentricity: | 0.16 ± 0.22 |
| Period: | 1003 ± 56 d |
| Time Periastron: | 2452261 ± 47 |
| Arg Peri: | 68 ± 17 |
| Semi-Amplitude: | 17.9 ± 4.6 |
HD 10647 b, also catalogued as q1 Eridani b, is an extrasolar planet approximately 57 light-years away in the constellation of Eridanus (the River). The planet is a mid-Jovian that orbits 103% farther from the star than Earth to the Sun. It takes about 33 months to orbit with semi-amplitude of 17.9 m/s.