GJ 508.2 Overview

GJ 508.2 0.53 R_⦿ 3720.00 K

GJ 508.2 b

Overview Parameters Ancillary 1 Nearby Data Bibliography 9 Legend Expand All

GJ 508.2 Architecture & Discovery Information

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
GJ 508.2
GJ 508.2 b	> 5300 d	> 587.98 M_⨁	Radial Velocity	2025	Morales et al. 2025	Confirmed Planet

GJ 508.2 Stellar Parameters (4 Solutions)

RA: 13h20m58.65s

Dec: +34d16m39.59s

Distance: 16.6374±0.0118 pc

Parallax: 60.0765000±0.0423516 mas

Ecliptic Latitude: 39.08442 deg

Ecliptic Longitude: 182.82459 deg

Galactic Latitude: 80.44433 deg

Galactic Longitude: 83.15516 deg

Total Proper Motion: 567.7300317±0.0494529 mas/yr

Proper Motion (RA): 483.7050000±0.0491278 mas/yr

Proper Motion (Dec): -297.2320000±0.0503037 mas/yr

Photometry: m_V
10.610±0.007; m_TESS
8.969±0.140; m_J
7.398±0.023; m_H
6.793±0.018; m_Ks
6.555±9.995; m_Ic
8.590±0.025; m_Gaia
9.765390±0.000631; m_B
12.014±0.095; m_g
11.5205000±0.0004711; m_i
9.2126000±0.0001761; m_r
10.0701000±0.0003177; m_u
15.365600±0.008312; m_z
9.1271500±0.0008896

Tools: Planetary Systems; ExoFOP Target Overview Page; IRSA Finding Chart; Stellar Hosts

Source	Morales et al. 2025	TICv8	Turnbull 2015	Hawley et al. 1996
L_✶ (log₁₀(L_⦿))	---	---	-1.222 +0.477-0.000	---
M_✶ (M_⦿)	0.54±0.12	0.5259120±1.5758100	0.48	---
Sp. T	M1.0 V	---	M0	M1
ρ_✶ (g/cm³)	---	5.01042±4.39018	---	---
R_✶ (R_⦿)	0.53±0.12	0.5289340±1.6817200	---	---
log g (log₁₀(cm/s²))	---	4.71218	---	---
T_eff (K)	3720±12	---	---	---
Metallicity (dex)	-0.15±0.04 [Fe/H]	---	---	---
v sin i (km/s)	<2.0	---	---	---
P_rot (days)	36±6	---	---	---

GJ 508.2 b Planetary Parameters (1 Solution)

Status: Confirmed Planet

Detected By: Radial Velocity

Tools: Planetary Systems

Source	Morales et al. 2025
ω (deg)	>302
M_p sin i (M_⨁)	>588
M_p sin i (M_Jup)	>1.85
e	>0.27
P (days)	>5300
K (m/s)	>33
a (au)	>4.85

Ancillary Information (1 Unique File)

+ GJ 508.2 (1 File Type, 1 File)

Literature Time Series (1 File Type, 1 File)

File Type	Data Points	Filter	Reference
Photometric Light Curve	142	Hp (Hipparcos)	Hipparcos and Tycho Catalogs

Nearby Data (within 30 arcseconds) Browse Nearby Data

Known Objects: 1 Confirmed Planets; 1 2MASS Point Source Catalog

Data Files: 4 KELT Time Series; 1 SuperWASP Time Series; 1 Associated Literature Data

Bibliography (9 References)

The CARMENES search for exoplanets around M dwarfs: Revisiting the GJ 317, GJ463, and GJ 3512 systems and two newly discovered planets orbiting GJ9773 and GJ 508.2
Morales et al. 2025 Reference Overview
The Revised TESS Input Catalog and Candidate Target List
TICv8 Reference Overview
ExoCat-1: The Nearby Stellar Systems Catalog for Exoplanet Imaging Missions
Turnbull 2015 Reference Overview
2MASS All-Sky Catalog of Point Sources
2MASS Point Source Catalog Reference Overview
Revised Coordinates and Proper Motions of the Stars in the Luyten Half-Second Catalog
Bakos et al. 2002 Reference Overview
The Tycho-2 catalog of the 2.5 million brightest stars
The Tycho-2 Catalog Reference Overview
The Hipparcos and Tycho Catalogs
Hipparcos and Tycho Catalogs Reference Overview
The Palomar/MSU nearby star spectroscopic survey. II. The southern M dwarfs and investigations of magnetic activity.
Hawley et al. 1996 Reference Overview
Photometry of Stars with Large Proper Motion
Weis 1996 Reference Overview

Legend

System
Star
Confirmed
Candidate
False Positive Planet
Controversial
False Positive

Aliases
Data Access
Transit Prediction Service
Time Series
Kepler | K2

External Link
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Debug Info

https://vmexoweb2.ipac.caltech.edu/data/Overviews_2.0/4/GJ_508.2.json

GJ 508.2

Catalog Parameters

13h20m58.65s

Dec

dec

+34d16m39.59s

elat

39.08442

elon

182.82459

glat

80.44433

glon

83.15516

m_V

sy_vmag

10.610±0.007

m_TESS

sy_tmag

8.969±0.140

m_J

sy_jmag

7.398±0.023

m_H

sy_hmag

6.793±0.018

m_Ks

sy_kmag

6.555±9.995

sy_kepmag

no_data

sy_w1mag

no_data

sy_w2mag

no_data

sy_w3mag

no_data

sy_w4mag

no_data

m_Ic

sy_icmag

8.590±0.025

m_Gaia

sy_gaiamag

9.765390±0.000631

m_B

sy_bmag

12.014±0.095

m_g

sy_gmag

11.5205000±0.0004711

m_i

sy_imag

9.2126000±0.0001761

m_r

sy_rmag

10.0701000±0.0003177

m_u

sy_umag

15.365600±0.008312

m_z

sy_zmag

9.1271500±0.0008896

sy_pm

567.7300317±0.0494529

μ_δ

sy_pmdec

-297.2320000±0.0503037

μ_α

sy_pmra

483.7050000±0.0491278

sy_plx

60.0765000±0.0423516

Distance

sy_dist

16.6374±0.0118

Set Parameters

R_✶

st_rad

0.5289340±1.6817200

T_eff

st_teff

3720±12