Planet K2-343 Ab

Detailed information about planet K2-343 Ab and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name
K2-343 Ab
Planet Status
Confirmed
Discovered in
2019
Publication
Status
Published in a refereed paper
Update
2025-09-04
Mass
—
Mass*sin(i)
—
Semi-Major Axis
0.03057 ( ± 0.000278 ) AU
Orbital Period
2.787174 ( ± 4e-06 ) day
Eccentricity
—
Angular distance
—
ω
—
Tperi
—
Radius
0.1472 ( +0.0143 -0.0071 ) RJ
Inclination
—
Detection Method
Primary Transit
Mass Meas. Method
—
Radius Meas. Method
Primary Transit
Primary transit
2457141.32497 ( +0.001208 -0.001231 ) JD
Secondary transit
—
λ
—
Impact Parameter b
0.48 ( +0.33 -0.32 )
Time Vr=0
—
Velocity Semiamplitude K
—
Calculated temperature
653.0 ( +10.0 -12.0 ) K
Measured temperature
—
Hottest point longitude
—
Geometric albedo
—
Surface gravity log(g/gH)
—
Alternate Names
EPIC 212072539 b, EPIC 212072539.02
Data Source Type Result Value Result Figure Notes Reference
Molecule Data Source Type Result Value Result Figure Notes Reference

1 Sep 2025: See also Planets in Binaries webpage.

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Star

Name
K2-343 A
Distance
166.169 ( ± 1.047 ) pc
Spectral type
M2V
Apparent magnitude V
16.01
Apparent magnitude I
—
Apparent magnitude J
—
Apparent magnitude H
—
Apparent magnitude K
—
Mass
0.49 ( ± 0.01 ) MSun
Age
—
Effective temperature
3804.0 ( +93.0 -74.0 ) K
Radius
0.46 ( ± 0.01 ) RSun
Metallicity [Fe/H]
-0.1 ( +0.18 -0.25 )
Detected Disc
—
Magnetic Field
—
RA2000
08:56:48.5
Dec2000
+21:30:09.6
Alternate Names
EPIC 212072539

Eeles-Nolle & Armstrong (2025): A faint companion star, likely a very low-mass M dwarf or a brown dwarf (Gaia DR3 685818591120205312, G = 20.58), lies 53.79 arcseconds away (8,930 AUs at 166 pc).

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