Planet 55 Cnc Ae

Detailed information about planet 55 Cnc Ae and its parameters.

Planet

Name
55 Cnc Ae
Planet Status
Confirmed
Discovered in
2004
Update
2024-06-19
Mass
Mass*sin(i)
Semi-Major Axis
Orbital Period
Eccentricity
ω
Tperi
Radius
Inclination
Detection Method
Radial Velocity, Primary Transit
Mass Meas. Method
Radial Velocity
Radius Meas. Method
Primary Transit
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K
6.12 ( ± 0.2 ) m/s
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names
TOI-1773 e, HD 75732 e, rho1 Cnc Ae
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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Star

A red dwarf companion star (spT M4.5V) lies 1065 AUs away.

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