Planet LTT 1445A b

Name LTT 1445A b
Planet Status Confirmed
Discovered in 2019
Mass 0.0264 ( -0.0264 +0.0 ) MJ
Mass*sin(i)
Semi-Major Axis 0.03807 (± 0.0007) AU
Orbital Period 5.35882 (± 0.00031) day
Eccentricity 0.16 ( -0.12 +0.35 )
ω 222.0 ( -61.0 +120.0 ) deg
Tperi
Radius 0.1204 ( -0.00607 +0.0066 ) RJ
Inclination 89.47 ( -0.41 +0.36 ) deg
Update 2019-06-26
Detection Method Primary Transit
Mass Detection Method Radial Velocity
Radius Detection Method Primary Transit
Primary transit
Secondary transit
λ
Impact Parameter b 0.27 ( -0.18 +0.23 )
Time Vr=0
Velocity Semiamplitude K 9.0 ( -9.0 +0.0 ) m/s
Calculated temperature 428.0 (± 22.0) K
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Star

LTT 1445A
Name LTT 1445A
Distance 6.9 pc
Spectral type M
Apparent magnitude V
Mass 0.256 (± 0.014) MSun
Age
Effective temperature 3340.0 (± 159.0) K
Radius 0.27 (± 0.012) RSun
Metallicity [Fe/H] -0.34 (± 0.09)
Detected Disc
Magnetic Field
RA2000 03:01:51.0
Dec2000 -16:35:36
Alternate Names
Planetary system 1 planet

Remarks

The parent star is part of a triple system with a pair of two other M stars at an angular distance 1.16 arc sec and orbiting around the A star with a period 36.2 years (Winters et al. 2019).

More data


Related publications

Three Red Suns in the Sky: A Transiting, Terrestrial Planet in a Triple M Dwarf System at 6.9 Parsecs
2019 WINTERS J., MEDINA A., IRWIN J., CHARBONNEAU D., ASTUDILLI-DEFRU N. et al.
Astron. J., submitted
arxiv