Planet CWISE J105512.11+544328.3

Detailed information about planet CWISE J105512.11+544328.3 and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

CWISE J105512.11+544328.3

Planet Status

Confirmed

Discovered in

2021

Update

2023-11-27

Mass

5.0 (\pm 1.0)

M_J 1 publication

CWISE J105512.11+544328.3: A Nearby Y Dwarf Spectroscopically Confirmed with Keck/NIRES

Mass*sin(i)

—

Semi-Major Axis

—

Orbital Period

—

Eccentricity

—

ω

—

T_peri

—

Radius

—

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

500.0 (\pm 150.0)

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

W1055 +5443

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Reference
CH4
CH4	Measurements	Detected	2023 - ROBBINS G.
H2O
H2O	Measurements	Detected	2023 - ROBBINS G.
NH3
NH3	Measurements	Detected	2023 - ROBBINS G.

Robbins et al., 2023 : W1055+5443 is a Y0 (pec)+/-0.5 dwarf. If its age is ≈180 Myr and log ( L bol/L Sun ) = - 6.0 +/-0.1, its mass is 4–6 M Jup . Considering a combination ofspectroscopic model fits and photometric estimates, the authors assign W1055+5443 an uncertain temperature of Teff = 500 ± 150 K.

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