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Mini-Neptune orbiting Gliese 674 From Wikipedia, the free encyclopedia
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[1] | |
---|---|
Discovered by | Bonfils et al. |
Discovery site | ESO |
Discovery date | January 7, 2007 |
HARPS | |
Orbital characteristics[2] | |
0.03867087(15) AU | |
Eccentricity | 0.242+0.012 −0.013 |
4.69502±0.00003 d | |
2453160.26±0.04 | |
138.1°±2.9° | |
Semi-amplitude | 8.68+0.11 −0.12 m/s |
Star | Gliese 674 |
Physical characteristics | |
Mass | ≥10.95±0.14 M🜨[2] |
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