Planet 55 Cnc e

Detailed information about planet 55 Cnc e and its parameters.

Planet

Name
55 Cnc e
Planet Status
Confirmed
Discovered in
2004
Mass
Mass*sin(i)
Semi-Major Axis
Orbital Period
Eccentricity
ω
Tperi
Radius
Inclination
Update
2024-01-27
Detection Method
Radial Velocity
Mass Detection Method
Radial Velocity
Radius Detection Method
Primary Transit
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K
6.12 m/s
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names
TOI-1773 e, HD 75732 e
Data Source Type Result Value Result Figure Notes Reference
Molecule Data Source Type Result Value Result Figure Notes Reference
C2H2
Modeling Detected 2021 - DEIBERT E.
Ca
Measurements Detected 2022 - KELES E.
Ca+
Measurements Detected 2022 - KELES E.
Fe
Measurements Detected 2023 - RASMUSSEN K.
Measurements Detected 2022 - KELES E.
Fe+
Measurements Detected 2022 - KELES E.
H2O
Measurements Detected 2017 - ESTEVES L.
HCN
Measurements Detected 2016 - TSIARAS A.
Modeling Detected 2021 - DEIBERT E.
K
Measurements Detected 2022 - KELES E.
Mg
Measurements Detected 2022 - KELES E.
N
Modeling Detected 2020 - ZILINSKAS M.
NH3
Modeling Detected 2021 - DEIBERT E.

30 Mar 2010: Dawson et al. (2010) claim "We find that the period of 2.817 days reported in the literature for planet e (McArthur et al. 2004, Fischer et al. 2008) is actually a daily alias of its true period of 0.737 days. This new period of 0.737 days, with a refined mass of 10 Mearth, produces a significantly improved 5-planet Keplerian fit for 55 Cnc and is the shortest known period for a planet."
08 Sep 2004: If coplanarity is assumed with the planet 55 Cnc d, McArthur et al. 2004 derive a mass 17.7 ± 5.57 MEarth for the planet 55 Cnc e.

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