Planet AS 209 b

Detailed information about planet AS 209 b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

AS 209 b

Planet Status

Confirmed

Discovered in

2022

Publication Status

—

Update

2025-09-07

Mass

1.3

M_J 1 publication

Molecules with ALMA at Planet-forming Scales (MAPS): A Circumplanetary Disk Candidate in Molecular-line Emission in the AS 209 Disk

Mass*sin(i)

—

Semi-Major Axis

200.0 AU 1 publication

Molecules with ALMA at Planet-forming Scales (MAPS): A Circumplanetary Disk Candidate in Molecular-line Emission in the AS 209 Disk

Orbital Period

—

Eccentricity

—

Angular distance

—

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

—

Measured temperature

35.0 K 1 publication

Molecules with ALMA at Planet-forming Scales (MAPS): A Circumplanetary Disk Candidate in Molecular-line Emission in the AS 209 Disk

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

—

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

Bae et al. (2022): A circumplanetary disk is detected around the source located 200 AUs away from protostar AS 209. The gas mass is estimated to be equal or greater than 30 M_E adopting a standard ¹³CO abundance, whereas the dust fraction is about 0.027 M_E.

No link