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Barnard's star Overview

Barnard's star 0.19 R⦿ 3271.00 K
Barnard d
Barnard b
Barnard c
Barnard e

Barnard's star Architecture & Discovery Information

Name Orbital Separation Planet Size Method Year Reference Disposition
Barnard's star
Barnard d 2.34 d > 0.26 M⨁ Radial Velocity 2025 Basant et al. 2025 Confirmed Planet
Barnard b 3.15 d > 0.3 M⨁ Radial Velocity 2024 González Hernández et al. 2024 Confirmed Planet
Barnard c 4.12 d > 0.34 M⨁ Radial Velocity 2025 Basant et al. 2025 Confirmed Planet
Barnard e 6.74 d > 0.19 M⨁ Radial Velocity 2025 Basant et al. 2025 Confirmed Planet
Barnard b
RA
17h57m47.67s
Dec
+04d44m16.73s
Distance
1.826550±0.000975 pc
Parallax
547.451000±0.289901 mas
Ecliptic Latitude
28.17607 deg
Ecliptic Longitude
269.37276 deg
Galactic Latitude
14.08585 deg
Galactic Longitude
31.04815 deg
Total Proper Motion
10393.550832±0.361912 mas/yr
Proper Motion (RA)
-802.803000±0.637868 mas/yr
Proper Motion (Dec)
10362.500000±0.359617 mas/yr
Photometry
mV
9.54±0.10
mTESS
6.882690±0.007429
mJ
5.244±0.020
mH
4.834±0.034
mKs
4.524±0.020
mIc
---
mGaia
8.195110±0.001998
mB
11.169±0.061
mg
10.213700±0.000204
mi
11.108700±0.002675
mr
11.2782000±0.0018034
mu
14.2471000±0.0048158
mz
7.1575700±0.0002994
Abundances
(Hypatia Catalog)
[Fe/H] -0.54±0.26 dex
[C/H] -0.51±0.09 dex
[O/H] -0.41±0.04 dex
[Na/H] -0.66±0.09 dex
[Mg/H] -0.46±0.28 dex
[Al/H] -0.44±0.04 dex
[Si/H] -0.68±0.17 dex
[Ca/H] -0.57±0.11 dex
[Y/H] -0.29±0.08 dex
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
Source González Hernández et al. 2024 TICv8 Turnbull 2015 Wright et al. 2004 Nidever et al. 2002 Hawley et al. 1996 Duncan et al. 1991
S Index
--- --- --- 0.761±0.099 --- --- 0.7721
Teff
(K)
3195±28 3259.0±157.0 3271 --- --- --- ---
M✶
(M⦿)
0.162±0.007 0.1626510±0.0200547 0.24 --- --- --- ---
R✶
(R⦿)
0.185±0.006 0.1935250±0.0057961 0.19 --- --- --- ---
Sp. T
M3.5-4 V --- M3.5V --- --- M4 ---
γ
(km/s)
--- --- --- --- -110.5 --- ---
L✶
(log10(L⦿))
-2.450+0.009-0.009
-2.4195+0.0983-0.1273
 --- --- --- --- ---
ρ✶
(g/cm3)
--- 31.6382±1.0708 --- --- --- --- ---
log g
(log10(cm/s2))
4.90±0.09 5.0758500±0.0277996 --- --- --- --- ---
Metallicity
(dex)
-0.56±0.07 [Fe/H] --- --- --- --- --- ---
CAII LOG RHK
-5.8±0.1 --- --- --- --- --- ---
Prot
(days)
142±9 --- --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Planetary Systems
Source Basant et al. 2025
Tp
(days)
2460243.70+0.08-0.07
(BJD)
Teq
(K)
483
ω
(deg)
-51.80+190.80-93.50
Mp sin i
(M⨁)
0.263±0.024
Mp sin i
(MJup)
0.000827±0.000076
e
0.04+0.05-0.03
P
(days)
2.3402±0.0003
K
(m/s)
0.428±0.036
a
(au)
0.0188±0.0003
Print
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Planetary Systems
Source Basant et al. 2025 González Hernández et al. 2024
Teq
(K)
438 400±7
S
(S⨁)
--- 6.76±0.05
Mp sin i
(M⨁)
0.299±0.026 0.37±0.05
Mp sin i
(MJup)
0.000941±0.000082 0.0012±0.0002
e
0.03+0.03-0.02
 <0.16
P
(days)
3.1542±0.0004 3.1533±0.0006
K
(m/s)
0.440±0.036 0.55±0.07
a
(au)
0.0229±0.0003 0.02294±0.00033
TC
(days)
--- 2460139.204±0.149
(BJD)
Tp
(days)
2460243.38±0.09
(BJD)
---
ω
(deg)
3.800+117.700-121.400
 ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Planetary Systems
Source Basant et al. 2025
Tp
(days)
2460242.92±0.10
(BJD)
Teq
(K)
400
ω
(deg)
90.80+38.90-48.10
Mp sin i
(M⨁)
0.335±0.030
Mp sin i
(MJup)
0.00105±0.00009
e
0.080+0.060-0.050
P
(days)
4.1244±0.0006
K
(m/s)
0.452±0.038
a
(au)
0.0274±0.0004
Print
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Planetary Systems
Source Basant et al. 2025
Tp
(days)
2460245.30+0.37-0.36
(BJD)
Teq
(K)
340
ω
(deg)
-27.50+137.50-96.10
Mp sin i
(M⨁)
0.193±0.033
Mp sin i
(MJup)
0.000607±0.000104
e
0.04+0.03-0.04
P
(days)
6.7392±0.0030
K
(m/s)
0.221±0.037
a
(au)
0.0381±0.0005
Print
Literature Stellar Spectra (6 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
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
Photometric Light Curve     82 Hp (Hipparcos) Hipparcos and Tycho Catalogs
Known Objects
4 Confirmed Planets
1 2MASS Point Source Catalog
Data Files
4 KELT Time Series
4 Associated Literature Data
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  • False Positive Planet
  • Controversial
  • False Positive
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  • Kepler | K2
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