Planet LTT 1445A b

Name LTT 1445A b
Planet Status Confirmed
Discovered in 2019
Mass 0.00903 (± 0.00082) MJ
Mass*sin(i)
Semi-Major Axis 0.03813 (± 0.0007) AU
Orbital Period 5.3587657 (± 4.3e-06) day
Eccentricity 0.11 ( -0.11 +0.0 )
ω 222.0 ( -61.0 +120.0 ) deg
Tperi
Radius 0.11643 ( -0.00544 +0.00589 ) RJ
Inclination 89.68 ( -0.29 +0.22 ) deg
Update 2021-08-02
Detection Method Primary Transit
Mass Detection Method Radial Velocity
Radius Detection Method Primary Transit
Primary transit 2458412.70851 (± 0.0004) JD
Secondary transit
λ
Impact Parameter b 0.17 ( -0.12 +0.15 )
Time Vr=0
Velocity Semiamplitude K 2.6 (± 0.21) m/s
Calculated temperature 424.0 (± 21.0) 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
2 planets

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

A Second Planet Transiting LTT~1445A and a Determination of the Masses of Both Worlds
2022 WINTERS J., CLOUTIER R., MEDINA A., IRWIN J., CHARBONNEAU D. et al.
Astron. J., 163, 168
paper   arxiv  

A hot terrestrial planet orbiting the bright M dwarf L 168-9 unveiled by TESS
2020 ASTUDILLO-DEFRU N., CLOUTIER R., WANG S., TESKE J., BRAHM R. et al.
Astron. & Astrophys., 636, A58
paper  arxiv  

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., 158, 152
paper  arxiv