Planet GJ 508.2 b

Detailed information about planet GJ 508.2 b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name
GJ 508.2 b
Planet Status
Confirmed
Discovered in
2025
Publication
Status
—
Update
2025-07-22
Mass
6.0 ( +0.7 -1.2 ) MJ
Mass*sin(i)
1.85 MJ
Semi-Major Axis
4.85 AU
Orbital Period
5300.0 day
Eccentricity
0.27
Angular distance
—
ω
302.0 deg
Tperi
—
Radius
—
Inclination
—
Detection Method
Radial Velocity
Mass Meas. Method
Radial Velocity
Radius Meas. Method
—
Primary transit
—
Secondary transit
—
λ
—
Impact Parameter b
—
Time Vr=0
—
Velocity Semiamplitude K
33.0 m/s
Calculated temperature
—
Measured temperature
—
Hottest point longitude
—
Geometric albedo
—
Surface gravity log(g/gH)
—
Alternate Names
—
Data Source Type Result Value Result Figure Notes Reference
Molecule Data Source Type Result Value Result Figure Notes Reference

Only lower limits to orbital parameters are provided (Morales et al. 2025).

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Star

Name
GJ 508.2
Distance
16.6585 ( ± 0.0054 ) pc
Spectral type
M1V
Apparent magnitude V
10.6
Apparent magnitude I
—
Apparent magnitude J
—
Apparent magnitude H
—
Apparent magnitude K
—
Mass
0.54 ( ± 0.12 ) MSun
Age
—
Effective temperature
3720.0 ( ± 12.0 ) K
Radius
0.53 ( ± 0.12 ) RSun
Metallicity [Fe/H]
-0.15 ( ± 0.04 )
Detected Disc
—
Magnetic Field
—
RA2000
13:20:58.1
Dec2000
+34:16:44.2
Alternate Names
GJ 9442

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