55 Cancri e
(55 Cnc e)
(superearth orbiting a Sun-like star)
55 Cancri e (55 Cnc e)
is a super-Earth of about 8.6 Earth masses,
orbiting a G-type star, but close to the star
with an orbital period of about 18 hours
(but was first thought to have a period
of 2.8 days).
Its determined density is based on estimates
of the host star's mass and radius
along with data from observed transits
and the star's radial velocity, yielding
a radius of roughly 2 Earth radii and
a density slightly (5%-10%) more than Earth's.
Given its proximity to he star, the temperature
of the star-facing side has been calculated
to be higher than 2000 K.
- Host star: 55 Cancri A (55 Cnc A).
- Discovery: by the radial velocity method in 2004.
- 13 pc - distance.
- 0.15 AU - orbital radius.
- 17.7 hours - orbital period.
- 1.9 - radius in Earth radii.
- 8 - Earth masses.
- 2573 K - predicted day-side temperature.
| || |
|~0||12.6pc||41.1ly||55 Cancri e|
|Coordinates:||55 Cnc e|
Referenced by pages:
equilibrium temperature (Teq)