Planet TOI-199 Ab

Detailed information about planet TOI-199 Ab and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name
TOI-199 Ab
Planet Status
Confirmed
Discovered in
2023
Publication
Status
Published in a refereed paper
Update
2025-11-21
Mass
0.17 ( ± 0.02 ) MJ
Mass*sin(i)
—
Semi-Major Axis
0.48 ( ± 0.002 ) AU
Orbital Period
104.869 ( ± 0.001 ) day
Eccentricity
0.105 ( ± 0.003 )
Angular distance
—
ω
65.1 ( ± 2.3 ) deg
Tperi
—
Radius
0.97 ( +0.01 -0.02 ) RJ
Inclination
89.8 ( ± 0.02 ) deg
Detection Method
Primary Transit
Mass Meas. Method
Radial Velocity
Radius Meas. Method
Primary Transit
Primary transit
2458256.1286 ( ± 0.0006 ) JD
Secondary transit
—
λ
—
Impact Parameter b
—
Time Vr=0
—
Velocity Semiamplitude K
7.7 m/s
Calculated temperature
325.0 ( +88.0 -82.0 ) K
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
CH4
Measurements Detected 2025 - BELLO-ARUFE A.
H2O
Modeling Detected 2025 - BELLO-ARUFE A.
NH3
Modeling Detected 2025 - BELLO-ARUFE A.

See also Planets in Binaries webpage.

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Star

Name
TOI-199 A
Distance
101.7 pc
Spectral type
G9/K0V
Apparent magnitude V
10.7
Apparent magnitude I
—
Apparent magnitude J
—
Apparent magnitude H
—
Apparent magnitude K
—
Mass
0.936 ( ± 0.009 ) MSun
Age
0.8 ( +1.2 -0.6 ) Gyr
Effective temperature
5255.0 ( ± 12.0 ) K
Radius
0.82 ( ± 0.03 ) RSun
Metallicity [Fe/H]
0.22 ( ± 0.03 )
Detected Disc
—
Magnetic Field
—
RA2000
05:20:25.0
Dec2000
-59:53:44.0
Alternate Names

Behmard et al. (2022): a faint M dwarf companion star lies 1016 AUs away.

No link