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
Tperi
Radius 0.18066 (± 0.00865) RJ
Inclination 88.57 ( -0.47 +0.63 ) deg
Update 2019-12-03
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 319.0 (± 28.0) K
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Star

G 9-40
Name G 9-40
Distance 27.928 (± 0.045) pc
Spectral type M2.5
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 0.3073 ( -0.0061 +0.0059 ) RSun
Metallicity [Fe/H] -0.078 (± 0.13)
Detected Disc
Magnetic Field
RA2000 08:58:52.0
Dec2000 +21:04:34
Alternate Names
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