Planet G 9-40 b

Name G 9-40 b
Planet Status Confirmed
Discovered in 2019
Mass 0.016 ( -0.006 +0.012 ) MJ
Mass*sin(i)
Semi-Major Axis 0.0385 ( -0.0053 +0.0078 ) AU
Orbital Period 5.746007 (± 6e-06) day
Eccentricity 0.0
ω 0.0 deg
Tperi
Radius 0.181 ( -0.009 +0.009 ) RJ
Inclination 88.57 ( -0.47 +0.63 ) deg
Update 2021-02-05
Detection Method Primary Transit
Mass Detection Method Theoretical
Radius Detection Method Primary Transit
Primary transit 2458497.77747 (± 0.00033) JD
Secondary transit 2458500.65047 (± 0.00033) JD
λ
Impact Parameter b 0.672 ( -0.22 +0.1 )
Time Vr=0
Velocity Semiamplitude K
Calculated temperature 456.0 ( -40.0 +35.0 ) K
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names 2MASS J08585232+2104344 b, EPIC 212048748 b, EPIC 212048748.01, K2-313 b, LSPM J0858+2104 b, TIC 203214081 b, WISE J085852.46+210430.8 b

Star

G 9-40
Name G 9-40
Distance 27.93 ( -0.04 +0.04 ) pc
Spectral type M2.5 V
Apparent magnitude V 13.8
Mass 0.29 (± 0.02) MSun
Age 9.9 ( -4.1 +2.6 ) Gyr
Effective temperature 3348.0 (± 32.0) K
Radius 0.31 ( -0.01 +0.01 ) RSun
Metallicity [Fe/H] 0.04 ( -0.11 +0.1 )
Detected Disc
Magnetic Field
RA2000 08:58:52.3
Dec2000 +21:04:34
Alternate Names 2MASS J08585232+2104344, EPIC 212048748, K2-313, LSPM J0858+2104, TIC 203214081, WISE J085852.46+210430.8
Planetary system 1 planet

More data


Related publications

A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder
2020 STEFANSSON G., CAñAS C., WISNIEWSKI J., ROBERTSON P., MAHADEVAN S. et al.
Astron. J., 159, 100
paper  arxiv