Gliese 674 b
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.[1]
| Discovery | |
|---|---|
| Discovered by | Bonfils et al. |
| Discovery site | ESO |
| Discovery date | January 7, 2007 |
| HARPS | |
| Orbital characteristics | |
| 0.039 AU (5,800,000 km) | |
| Eccentricity | 0.2 ± 0.02 |
| 4.6938 ± 0.007 d | |
| 2453780.085 ± 0.078 | |
| 6 ± 200 | |
| Semi-amplitude | 8.70 ± 0.19 |
| Star | Gliese 674 |
References
- Bonfils, X.; et al. (2007). "The HARPS search for southern extra-solar planets. X. A m sin i = 11 M_⊕ planet around the nearby spotted M dwarf GJ 674". Astronomy and Astrophysics. 474 (1): 293–299. arXiv:0704.0270. Bibcode:2007A&A...474..293B. doi:10.1051/0004-6361:20077068.
External links
- "GJ 674". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-08-02.
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