| Gliese 674 b | |
| Discoverer: | Bonfils et al. |
| Discovery Site: | ESO |
| Discovered: | January 7, 2007 |
| Apsis: | astron |
| Semimajor: | 0.039AU |
| Eccentricity: | 0.2 ± 0.02 |
| Period: | 4.6938 ± 0.007 d |
| Time Periastron: | 2453780.085 ± 0.078 |
| Arg Peri: | 6 ± 200 |
| Semi-Amplitude: | 8.70 ± 0.19 |
Gliese 674 b is an extrasolar planet approximately 15 light years away in the constellation of Ara. This planet orbits tightly around Gliese 674. It is a sub-Neptune-or-Uranus-mass planet either gaseous or rocky. It orbits as close as 0.039 AU from the star and takes only 4.6938 days to orbit. This planet has a similar eccentricity to Mercury (e=0.2). The discovery of the planet was announced on January 7, 2007 by using the HARPS spectrograph mounted on the ESO's 3.6 meter telescope at La Silla, Chile.