Planet GJ 3998 b

Name GJ 3998 b
Planet Status Confirmed
Discovered in 2016
Mass 0.00777 (± 0.00085) MJ
Mass*sin(i) 0.00777 (± 0.00085) MJ
Semi-Major Axis 0.029 (± 0.001) AU
Orbital Period 2.64977 ( -0.00077 +0.00081 ) JD
Eccentricity 0.0
ω
Tperi
Radius
Inclination
Update 2016-07-14
Detection Method Radial Velocity
Mass Detection Method Radial Velocity
Radius Detection Method
Molecules
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K 1.81 ( -0.16 +0.14 ) m/s
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Star

GJ 3998
Name GJ 3998
Distance 17.8 (± 0.7) pc
Spectral type M1
Apparent magnitude V 10.8
Mass 0.5 (± 0.05) MSun
Age
Effective temperature 3722.0 (± 68.0) K +
Radius 0.49 (± 0.05) RSun
Metallicity [Fe/H] -0.16 (± 0.09)
Detected Disc
Magnetic Field
RA2000 17:16:01.0
Dec2000 +11:03:30
Alternate Names
Planetary system
2 planets

More data


Related publications

The HADES RV Programme with HARPS-N@TNG - GJ 3998: An early M-dwarf hosting a system of Super-Earths
2016 AFFER L., MICELA G., DAMASSO M., PERGER M., RIBAS I. et al.
Astron. & Astrophys., accepted
arxiv