Planet HD 21749 c

Name HD 21749 c
Planet Status Confirmed
Discovered in 2018
Mass 0.01164 ( -nan +0.0 ) MJ
Mass*sin(i)
Semi-Major Axis 0.0695 ( -0.0023 +0.0021 ) AU
Orbital Period 7.78993 ( -0.00044 +0.00051 ) day
Eccentricity
ω
Tperi
Radius 0.07958 ( -0.00517 +0.00571 ) RJ
Inclination 88.9 ( -0.37 +0.5 ) deg
Update 2019-05-02
Detection Method Primary Transit
Mass Detection Method Radial Velocity
Radius Detection Method Primary Transit
Primary transit 2458332.29123 ( -0.00092 +0.0021 ) JD
Secondary transit
λ
Impact Parameter b 0.42 ( -0.18 +0.11 )
Time Vr=0
Velocity Semiamplitude K 1.43 ( -1.43 +0.0 ) m/s
Calculated temperature 703.0 (± 24.0) K
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names GJ 143 c, TOI 186.02

Star

GJ 143
Name GJ 143
Distance 16.33 (± 0.03) pc +
Spectral type K4.5V
Apparent magnitude V 8.3
Mass 0.76 (± 0.007) MSun
Age 3.8 (± 3.7) Gyr
Effective temperature 4640.0 (± 100.0) K
Radius 0.73 (± 0.01) RSun
Metallicity [Fe/H] 0.003 (± 0.06)
Detected Disc
Magnetic Field
RA2000 03:26:59.0
Dec2000 -63:29:57
Alternate Names
Planetary system
2 planets

More data


Related publications

TESS Delivers Its First Earth-sized Planet and a Warm Sub-Neptune
2019 DRAGOMIR D., TESKE J., GUNTHER M., SEGRANSAN D., BURT J. et al.
ApJ. Letters, 875, L7
paper  arxiv  

TESS exoplanet candidates validated with HARPS archival data. A massive Neptune around GJ 143 and two Neptunes around HD 23472
2018 TRIFONOV T., RYBIZKI J. & KÜRSTER M.
Astron. & Astrophys., 622, L7
paper  arxiv