Planet PSO J318.5-22

Detailed information about planet PSO J318.5-22 and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

PSO J318.5-22

Planet Status

Confirmed

Discovered in

2018

Update

2024-07-17

Mass

7.09 (\pm 1.98)

M_J 1 publication

Fundamental Parameters and Spectral Energy Distributions of Young and Field Age Objects with Masses Spanning the Stellar to Planetary Regime

Mass*sin(i)

—

Semi-Major Axis

—

Orbital Period

—

Eccentricity

—

ω

—

T_peri

—

Radius

1.41 (\pm 0.03)

R_J 1 publication

Fundamental Parameters and Spectral Energy Distributions of Young and Field Age Objects with Masses Spanning the Stellar to Planetary Regime

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

1210.0 (\pm 41.0)

K 1 publication

Fundamental Parameters and Spectral Energy Distributions of Young and Field Age Objects with Masses Spanning the Stellar to Planetary Regime

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

PSO J318.5338-22.8603, 2MASS J21140802-2251358

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

Liu et al. (2018) : J=16.7, spectral type = L7 -/+1. For an age = 12-4/+8 My, the temperature = 1160 (-40/+30) K, the radius = 1.53 (-0.03/+0.02) RJ and the mass = 6.5 (-1.0/+1.3) MJ. For an age = 10-100 My, the temperature is 1210 (-50,+40) K, the radius is 1.40 (-0.4+0.06) RJ and the mass = 12-/+3 MJ. PSO J318.5−22 is the first free-floating object with the colors, magnitudes, spectrum, luminosity, and mass that overlap the young dusty planets around HR 8799 and 2MASS J1207−39.

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