55 Cancri e
(55 Cnc e)
(super-Earth orbiting a Sun-like star)
55 Cancri e (55 Cnc e)
is a super-Earth of about 8 Earth masses,
orbiting a K-type star, but close to the star
with an orbital period of about 18 hours
(but was initially 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 more than 3000 K.
Characteristics:
- Host star: 55 Cancri A (55 Cnc A).
- Discovery: by the radial velocity method in 2004.
- 13 pc - distance.
- 0.015 AU - orbital radius.
- 17.7 hours - orbital period.
- 1.9 - radius in Earth radii.
- 8 - Earth masses.
- 3771 K - predicted day-side temperature.
(exoplanet,transits,RV method,super-Earth)
Further reading:
https://en.wikipedia.org/wiki/55_Cancri_e
https://en.wikipedia.org/wiki/55_Cancri
https://mcdonaldobservatory.org/news/releases/2004/0831.html
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=55+Cancri+e
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=55+Cancri
https://exoplanets.nasa.gov/exoplanet-catalog/7005/55-cancri-e/
https://exoplanet.eu/catalog/55_cnc_ae--243/
https://exoplanetarchive.ipac.caltech.edu/overview/HD%2075732e#planet_55-Cnc-e_collapsible
Redshift | Parsecs /Distance | Lightyears /Lookback Years | | |
~0 | 12.6pc | 41.1ly | | 55 Cancri e |
|
Coordinates: | 55 Cnc e J085235.8111+281950.955 |
|
Referenced by pages:
equilibrium temperature (Teq)
Flamsteed designation
stellar designation
Index