Planet TWA 40

Detailed information about planet TWA 40 and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

TWA 40

Planet Status

Confirmed

Discovered in

2014

Publication Status

Published in a refereed paper

Update

2025-03-30

Mass

3.3 (\begin{matrix} + 3.0 \\ - 1.6 \end{matrix})

M_J 1 publication

Uniform Forward-modeling Analysis of Ultracool Dwarfs. III. Late-M and L Dwarfs in Young Moving Groups, the Pleiades, and the Hyades

Mass*sin(i)

—

Semi-Major Axis

—

Orbital Period

—

Eccentricity

—

Angular distance

—

ω

—

T_peri

—

Radius

1.306 (\pm 0.078)

R_J 1 publication

Uniform Forward-modeling Analysis of Ultracool Dwarfs. III. Late-M and L Dwarfs in Young Moving Groups, the Pleiades, and the Hyades

Inclination

—

Detection Method

Imaging

Mass Meas. Method

Spectrum

Radius Meas. Method

—

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

—

Calculated temperature

2487.0 (\begin{matrix} + 52.0 \\ - 51.0 \end{matrix})

K 1 publication

Uniform Forward-modeling Analysis of Ultracool Dwarfs. III. Late-M and L Dwarfs in Young Moving Groups, the Pleiades, and the Hyades

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

2MASS J12074836-3900043

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

Member of TW Hydrae Association. Spectral type L0. Age 8 Myrs.
Gonzalez-Payo et al. (2024) report physical association with exoplanet host 2M 1207 A 1,977 arcseconds away (127,878 AUs at 64.7 pc). Hence it may be regarded as "2M 1207 B" or "TWA 27 C".

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