Planet HD 18438 b

Detailed information about planet HD 18438 b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name
HD 18438 b
Planet Status
Confirmed
Discovered in
2023
Update
2023-03-16
Mass
21.0 ( ± 1.0 ) MJ
Mass*sin(i)
21.0 ( ± 1.0 ) MJ
Semi-Major Axis
2.1 ( ± 0.1 ) AU
Orbital Period
803.0 ( ± 5.0 ) day
Eccentricity
0.1 ( ± 0.1 )
ω
167.0 ( ± 24.0 ) deg
Tperi
2455367.0 ( ± 45.0 ) JD
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
305.0 ( ± 18.0 ) 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

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Star

Name
HD 18438
Distance
225.0 ( ± 8.7 ) pc
Spectral type
M2.5 III
Apparent magnitude V
5.6
Mass
1.84 ( ± 0.1 ) MSun
Age
5.5 ( ± 2.4 ) Gyr
Effective temperature
3860.0 ( ± 100.0 ) K
Radius
88.5 ( ± 4.0 ) RSun
Metallicity [Fe/H]
-0.4 ( ± 0.1 )
Detected Disc
—
Magnetic Field
—
RA2000
03:06:08.0
Dec2000
+79:25:07.0
Alternate Names
—

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