Planet HD 155918 Ac

Detailed information about planet HD 155918 Ac and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name
HD 155918 Ac
Planet Status
Confirmed
Discovered in
2022
Update
2024-07-28
Mass
5.909 ( +0.653 -0.766 ) MJ
Mass*sin(i)
—
Semi-Major Axis
13.183 ( +1.17 -1.179 ) AU
Orbital Period
17202.2 ( +2100.8 -1950.0 ) day
Eccentricity
0.071 ( +0.051 -0.053 )
ω
182.687 ( +20.491 -22.798 ) deg
Tperi
—
Radius
—
Inclination
31.771 ( +2.806 -2.131 ) 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
24.023 ( +1.315 -1.684 ) 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.

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Star

Name
HD 155918 A
Distance
27.561 ( ± 0.02265 ) pc
Spectral type
G2V
Apparent magnitude V
7.04
Mass
1.03 ( ± 0.131 ) MSun
Age
—
Effective temperature
5771.84 ( ± 105.791 ) K
Radius
1.019 ( ± 0.0439 ) RSun
Metallicity [Fe/H]
-0.661 ( ± 0.024 )
Detected Disc
—
Magnetic Field
—
RA2000
17:22:12.6
Dec2000
-75:20:53.3
Alternate Names
—

Gaia Collaboration (2023): HD 155918 is shown to have a candidate companion star, possibly an M dwarf, 3.66 arcseconds away (100 AUs at 27.5 pc).

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