GJ 3470 b
Hot Neptune orbiting GJ 3470 / From Wikipedia, the free encyclopedia
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GJ 3470 b (occasionally Gliese 3470 b, formally named Phailinsiam[2]) is an exoplanet orbiting the star GJ 3470, located in the constellation Cancer. With a mass of just under 14 Earth-masses and a radius approximately 4.3 times that of Earth's, it is likely something akin to Neptune despite the initially strong belief that the planet was not covered in clouds like the gas giants in the Solar System.[citation needed]
Quick Facts Discovery, Discovered by ...
Discovery[1] | |
---|---|
Discovered by | X. Bonfils et al. |
Discovery date | 2012 |
Radial velocity | |
Designations | |
Phailinsiam[2] | |
Orbital characteristics[3] | |
0.0355±0.0019 AU | |
Eccentricity | 0.114+0.052 −0.051[4] |
3.33665240(14) d[5] | |
Inclination | 89.13°+0.26° −0.34° |
Star | GJ 3470 |
Physical characteristics[3] | |
Mean radius | 4.57±0.18 R🜨 |
Mass | 13.9±1.5 M🜨 |
Mean density | 0.80±0.13 g/cm3 |
Temperature | 615±16 K[4] |
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The orbit of GJ 3470 b is strongly inclined to the equatorial plane of the parent star, with misalignment equal to 97+16
−11°.[6]