Planet CFBDS J2139+0220

Detailed information about planet CFBDS J2139+0220 and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

CFBDS J2139+0220

Planet Status

Confirmed

Discovered in

2006

Update

2024-08-24

Mass

16.2 (\pm 8.8)

M_J 1 publication

Patchy Forsterite Clouds in the Atmospheres of Two Highly Variable Exoplanet Analogs

Mass*sin(i)

—

Semi-Major Axis

—

Orbital Period

—

Eccentricity

—

ω

—

T_peri

—

Radius

1.14 (\pm 0.11)

R_J 1 publication

Patchy Forsterite Clouds in the Atmospheres of Two Highly Variable Exoplanet Analogs

Inclination

—

Detection Method

Imaging

Mass Meas. Method

—

Radius Meas. Method

—

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

—

Calculated temperature

1040.0 (\pm 60.0)

K 1 publication

Patchy Forsterite Clouds in the Atmospheres of Two Highly Variable Exoplanet Analogs

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

4.27

Alternate Names

CFBDS J213926+022023, 2MASS J21392676+0220226

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Reference
C
C	Measurements	Detected		2023 - VOS J.
CH4
CH4	Measurements	Detected		2023 - VOS J.
CO
CO	Measurements	Detected		2023 - VOS J.
CO2
CO2	Measurements	Detected		2023 - VOS J.
CrH
CrH	Measurements	Detected		2023 - VOS J.
Fe
Fe	Measurements	Detected		2023 - VOS J.
FeH
FeH	Measurements	Detected		2023 - VOS J.
H2O
H2O	Measurements	Detected		2023 - VOS J.
Mg2SiO4
	Measurements	Detected		2023 - VOS J.
	Measurements	Detected	-1.0	2023 - VOS J.
NH3
NH3	Measurements	Detected		2023 - VOS J.
O
O	Measurements	Detected		2023 - VOS J.
SiO
SiO	Measurements	Detected		2023 - VOS J.

Vos et al. (2022): CFBDS J2139+0220 (or 2MASS J2139+02) is a highly variable approx 200 My old, T1.5 dwarf. Analyses show a patchy, high-altitude forsterite (Mg2SiO4) cloud above a deeper, optically thick iron (Fe)cloud. Burgasser et al. (2010) infer it as possible unresolved binary (spT L8.5+T3.5).

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