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

Mass

—

Mass*sin(i)

—

Semi-Major Axis

—

Orbital Period

—

Eccentricity

—

ω

—

T_peri

—

Radius

—

Inclination

—

Update

2018-10-01

Detection Method

Imaging

Mass Detection Method

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Radius Detection Method

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Primary transit

—

Secondary transit

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λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

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Calculated temperature

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Measured temperature

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Hottest point longitude

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Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

J318.5338-22.8603

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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