Planet K2-257 b

Detailed information about planet K2-257 b and its parameters.

Planet parameters Publications Observability Predictor Exo3D

Planet

Name
K2-257 b
Mass
—
Mass*sin(i)
—
Semi-Major Axis
0.0216 ( +0.0002 -0.0002 ) AU
Orbital Period
1.60588 ( +0.00014 -0.00013 ) day
Eccentricity
—
ω
—
Tperi
—
Radius
0.074 ( +0.005 -0.004 ) RJ
Inclination
—
Primary transit
—
Secondary transit
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λ
—
Impact Parameter b
0.4 ( +0.31 -0.27 )
Time Vr=0
—
Velocity Semiamplitude K
—
Calculated temperature
789.0 ( +14.0 -14.0 ) K
Measured temperature
—
Hottest point longitude
—
Surface gravity log(g/gH)
—
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
K2-257
Distance
64.1 ( +0.3 -0.3 ) pc
Spectral type
—
Apparent magnitude V
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Apparent magnitude I
—
Apparent magnitude J
—
Apparent magnitude H
—
Apparent magnitude K
—
Mass
0.52 ( +0.01 -0.01 ) MSun
Age
—
Effective temperature
3725.0 ( +80.0 -46.0 ) K
Radius
0.5 ( +0.01 -0.01 ) RSun
Metallicity [Fe/H]
-0.03 ( +0.17 -0.18 )
Detected Disc
—
Magnetic Field
—
RA2000
12:33:06.8
Dec2000
-01:57:11.4
Alternate Names
2MASS J12330683-0157113, EPIC 228974324, WISE J123306.80-015711.7

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