Planet K2-353 Ab

Detailed information about planet K2-353 Ab and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name
K2-353 Ab
Planet Status
Confirmed
Discovered in
2021
Publication
Status
Published in a refereed paper
Update
2025-09-04
Mass
—
Mass*sin(i)
—
Semi-Major Axis
0.116 ( ± 0.000914 ) AU
Orbital Period
15.466805 ( +0.000572 -0.000565 ) day
Eccentricity
—
Angular distance
—
ω
—
Tperi
—
Radius
0.4951 ( +0.0196 -0.018 ) RJ
Inclination
—
Detection Method
Primary Transit
Mass Meas. Method
—
Radius Meas. Method
Primary Transit
Primary transit
2458189.851818 ( +0.000977 -0.000988 ) JD
Secondary transit
—
λ
—
Impact Parameter b
0.77 ( ± 0.02 )
Time Vr=0
—
Velocity Semiamplitude K
—
Calculated temperature
735.0 ( +13.0 -14.0 ) K
Measured temperature
—
Hottest point longitude
—
Geometric albedo
—
Surface gravity log(g/gH)
—
Alternate Names
EPIC 251554286 b, EPIC 251554286.01
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
K2-353 A
Distance
268.515 ( +3.729 -3.629 ) pc
Spectral type
G3V
Apparent magnitude V
12.28
Apparent magnitude I
—
Apparent magnitude J
—
Apparent magnitude H
—
Apparent magnitude K
—
Mass
0.87 ( ± 0.02 ) MSun
Age
—
Effective temperature
5698.0 ( ± 55.0 ) K
Radius
0.99 ( ± 0.03 ) RSun
Metallicity [Fe/H]
-0.21 ( ± 0.04 )
Detected Disc
—
Magnetic Field
—
RA2000
13:26:28.1
Dec2000
-02:16:54.8
Alternate Names
EPIC 251554286

Eeles-Nolle & Armstrong (2025): A faint companion, likely an M dwarf (Gaia DR3 3638010850751062528, G = 18.68), lies 28.75 arcseconds away (7,720 AUs at 268 pc).

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