Planet HD 153557 Ab

Detailed information about planet HD 153557 Ab and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name
HD 153557 Ab
Planet Status
Confirmed
Discovered in
2022
Publication
Status
—
Update
2025-02-11
Mass
—
Mass*sin(i)
0.064 ( +0.006 -0.007 ) MJ
Semi-Major Axis
0.068 ( ± 0.003 ) AU
Orbital Period
7.3 ( ± 0.0003 ) day
Eccentricity
0.065 ( +0.053 -0.037 )
Angular distance
—
ω
141.983 ( +15.315 -17.472 ) deg
Tperi
—
Radius
—
Inclination
—
Detection Method
Radial Velocity
Mass Meas. Method
Radial Velocity
Radius Meas. Method
—
Primary transit
—
Secondary transit
—
λ
—
Impact Parameter b
—
Time Vr=0
—
Velocity Semiamplitude K
7.826 ( +0.547 -0.65 ) 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 153557 A
Distance
17.9412 ( ± 0.0084 ) pc
Spectral type
K3V
Apparent magnitude V
7.82
Apparent magnitude I
—
Apparent magnitude J
—
Apparent magnitude H
—
Apparent magnitude K
—
Mass
0.7451 ( ± 0.0515 ) MSun
Age
—
Effective temperature
4837.0 ( ± 127.791 ) K
Radius
0.79 ( ± 0.091 ) RSun
Metallicity [Fe/H]
—
Detected Disc
—
Magnetic Field
—
RA2000
16:57:53.2
Dec2000
+47:22:00.1
Alternate Names
*V1090 Her, BD+47 2415 A, GJ 649.1 A, STFA 32 A, STF 4032 A

HD 153557 is part of a triple system with an M dwarf secondary 90 AUs away (HD 153557 B, spT M1.5V) and a K3 dwarf tertiary (HD 153525) 2,017 AUs away.

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