Planet HD 217958 Ab

Detailed information about planet HD 217958 Ab and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name
HD 217958 Ab
Planet Status
Confirmed
Discovered in
2022
Update
2024-07-28
Mass
0.524 ( +0.347 -0.063 ) MJ
Mass*sin(i)
—
Semi-Major Axis
3.758 ( +0.169 -0.2 ) AU
Orbital Period
2560.2 ( +66.5 -91.2 ) day
Eccentricity
0.156 ( +0.093 -0.081 )
ω
252.258 ( +81.413 -117.42 ) deg
Tperi
—
Radius
—
Inclination
91.357 ( +31.078 -38.771 ) deg
Detection Method
Radial Velocity, Astrometry
Mass Meas. Method
Astrometry
Radius Meas. Method
—
Primary transit
—
Secondary transit
—
λ
—
Impact Parameter b
—
Time Vr=0
—
Velocity Semiamplitude K
7.474 ( +1.424 -1.117 ) m/s
Calculated temperature
—
Measured temperature
—
Hottest point longitude
—
Geometric albedo
—
Surface gravity log(g/gH)
—
Alternate Names
—
Data Source Type Result Value Result Figure Notes Reference
Molecule Data Source Type Result Value Result Figure Notes Reference

See also Planets in Binaries webpage.

No link

Star

Name
HD 217958 A
Distance
61.7957 ( ± 0.20925 ) pc
Spectral type
G0IV-V
Apparent magnitude V
8.05
Mass
1.08 ( ± 0.1413 ) MSun
Age
—
Effective temperature
5930.64 ( ± 134.988 ) K
Radius
1.326 ( ± 0.068 ) RSun
Metallicity [Fe/H]
0.286 ( ± 0.0257 )
Detected Disc
—
Magnetic Field
—
RA2000
23:04:32.9
Dec2000
-25:41:28.0
Alternate Names
—

Feng et al. (2022): HD 217958 forms an eccentric binary system (a = 25 AUs, e = 0.245, i = 26.826°) with a low-mass M dwarf star (m = 0.081 MSol).

No link