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GJ 317 Overview

  • Star: GJ 317
    • Stellar Radius: 0.43 Solar Radius
    • Stellar Effective Temperature: 3510.00 K
    • Planet: GJ 317 b
      • Disposition Confirmed
    • Planet: GJ 317 c
      • Disposition Confirmed

GJ 317 Architecture & Discovery Information

Name Orbital Separation Planet Size Method Year Reference Disposition
GJ 317
GJ 317 b 695.69 d > 536.49 M⨁ Radial Velocity 2007 Johnson et al. 2007 Confirmed Planet
GJ 317 c 6500 d > 454.49 M⨁ Radial Velocity 2016 Bryan et al. 2016 Confirmed Planet
RA
08h40m58.69s
Dec
-23d27m10.11s
Distance
15.1968+0.0130-0.0129
pc
Parallax
65.7744000±0.0556846 mas
Ecliptic Latitude
-40.06754 deg
Ecliptic Longitude
140.75177 deg
Galactic Latitude
11.19034 deg
Galactic Longitude
246.79531 deg
Total Proper Motion
928.2322049±0.1290887 mas/yr
Proper Motion (RA)
-461.162000±0.139464 mas/yr
Proper Motion (Dec)
805.571000±0.125502 mas/yr
Photometry
mV 12.4±0.2
mTESS 9.5113800±0.0073881
mJ 7.934±0.027
mH 7.321±0.071
mKs 7.028±0.020
mW1 6.867±0.065
mW2 6.766±0.021
mW3 6.704±0.016
mW4 6.502±0.059
mIc ---
mGaia 10.753900±0.000818
mB ---
Abundances
(Hypatia Catalog)
[Fe/H] 0.07±0.04 dex
[C/H] 0.39±0.09 dex
[O/H] -0.27±0.09 dex
[Na/H] 0.50±0.04 dex
[Mg/H] 0.06±0.05 dex
[Al/H] 0.09±0.06 dex
[Si/H] 0.25±0.24 dex
[Ca/H] -0.01±0.06 dex
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
Stellar Hosts
Source Morales et al. 2025 Rosenthal et al. 2021 Feng et al. 2020 TICv8 Gaia DR2 Bryan et al. 2016 Anglada-Escude et al. 2012 Johnson et al. 2007 Hawley et al. 1996
Teff
(K)
3496±37 3492.7342869650001±44.5990175456000 --- 3347.0±157.0
3589.7932+281.4140-253.7930
 --- 3510±50 --- ---
Metallicity
(dex)
-0.02±0.08 [Fe/H] 0.30067797324900003±0.07647372255192500 [Fe/H] --- -0.5537760±0.0814516 [M/H] --- --- 0.36±0.2 [Fe/H] -0.23±0.2 [Fe/H] ---
γ
(km/s)
--- --- --- --- --- --- 87.8±1.5 --- ---
Age
(Gyr)
--- --- --- --- --- --- 5 --- ---
M✶
(M⦿)
0.402±0.014 0.45327078392200±0.00877074098738 0.42±0.02 0.4211600±0.0202602 --- 0.240±0.040 0.42±0.05 0.26±0.04 ---
Sp. T
M3.5 V --- --- --- --- --- M2.5 V M3.5 V M3.5 V
L✶
(log10(L⦿))
--- --- ---
-1.68663+0.09636-0.12402
 --- --- --- --- ---
ρ✶
(g/cm3)
--- --- --- 7.6477156±0.3138118 --- --- --- --- ---
R✶
(R⦿)
0.403±0.009 0.43183446003000±0.00830414660821 --- 0.4266060±0.0126747 --- --- --- --- ---
log g
(log10(cm/s2))
--- 4.8224364025150006±0.0116311748343750 --- 4.8024600±0.0049057 --- --- --- --- ---
v sin i
(km/s)
<2.5 --- --- --- --- --- --- --- ---
Prot
(days)
57.5±1.7 --- --- --- --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Planetary Systems
Source Morales et al. 2025 Rosenthal et al. 2021 Feng et al. 2020 Anglada-Escude et al. 2012 Johnson et al. 2007
Tp
(days)
--- --- 2450988.9±14.5
(JD)
2451656.7±35 2451639±30
ω
(deg)
11.3+4.8-4.6
-28+15-13
 72.0±133.0 342±10 344±10
Mp sin i
(M⨁)
536.5±13.0 588.9±11.8 557.1±18.3 572.07±15.89 381.4
Mp sin i
(MJup)
1.688±0.041 1.853±0.037 1.753±0.058 1.8±0.05 1.2
e
0.0826+0.0070-0.0071
 0.0980±0.0160 0.07±0.01 0.11±0.05 0.193±0.06
P
(days)
695.69+0.26-0.25
 695.36±0.70 695.660±0.355 692±2 692.9±4
K
(m/s)
71.39+0.56-0.55
 72.4±1.1 71.81±0.58 75.2±3.0 71.0±7
a
(au)
1.138±0.013
1.1800+0.0075-0.0076
 1.151±0.018 1.15±0.05 0.95
TC
(days)
2458089.4+1.7-1.6
(BJD)
2455306.1+4.6-4.5
(BJD)
--- --- ---
Mp
(M⨁)
--- --- ---
794.5 +222.5-127.1
---
Mp
(MJup)
--- --- ---
2.5 +0.7-0.4
---
i
(deg)
--- --- ---
45 +30-10
---
Print
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Planetary Systems
Source Morales et al. 2025 Rosenthal et al. 2021 Feng et al. 2020 Bryan et al. 2016 Anglada-Escude et al. 2012
Tp
(days)
--- --- 2449804.6±221.5
(JD)
2457424+1913-3660
(JD)
---
ω
(deg)
106.7+5.4-5.3
-65.9+20.0-14.0
 108±9
194+27-31
 210
Mp sin i
(M⨁)
454.5+18.4-17.5
531.7+24.8-24.2
 522.5±19.1
489+400-181
 636
Mp sin i
(MJup)
1.430+0.058-0.055
1.673+0.078-0.076
 1.644±0.060
1.54+1.26-0.57
 2.0
e
0.217±0.014
0.250+0.110-0.074
 0.17±0.02
0.308+0.065-0.079
 0.810±0.200
P
(days)
6500+169-166
7500+1500-720
 6739.323±143.106
5312+758-1248
 >10000
K
(m/s)
29.33+0.74-0.73
 30.3±1.6 31.97±0.56
30+36-14
 30
a
(au)
5.04±0.10
5.78+0.75-0.38
 5.230±0.111 --- 25±15
TC
(days)
2462735.0+179.0-176.0
(BJD)
2456384+75-77
(BJD)
--- --- ---
Print
Literature Stellar Spectra (4 Files)
File Type Spectrum Type Wavelength Category Reference
Spectra     echelle grating Optical California Planet Search
Spectra     echelle grating Optical California Planet Search
Spectra     echelle grating Optical California Planet Search
Spectra     echelle grating Optical California Planet Search
Literature Time Series (1 File Type, 1 File)
File Type Data Points Filter Reference
Radial Velocity Curve     18 Optical Spectra Johnson et al. 2007
Known Objects
2 Confirmed Planets
3 2MASS Point Source Catalog
Data Files
2 Associated Literature Data
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  • Candidate
  • False Positive Planet
  • Controversial
  • False Positive
  • Aliases
  • Data Access
  • Transit Prediction Service
  • Time Series
  • Kepler | K2
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