Temperature
3913 K
3784 to 3920
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Stellar HostProfile
GJ 740
M1.0 V • 11.10 pc
Records
9
literature rows
Planets
1
system count
References
10
distinct source labels
HIP: HIP 93101TIC: TIC 227642705HD: HD 176029
Approximate color
from effective temperature
Canonical Summary
Adopted host values from one source row
Values come from the row with the most populated summary measurements. Missing values stay missing. Ranges and counts describe all source rows.
Stellar source: Toledo-Padrón et al. 2021 • System source: TICv8
Mass
0.58 Msun
0.50 to 0.58
Radius
0.56 Rsun
0.56 to 0.61
Luminosity
-1.21 log(Lsun)
-1.21 to -1.16
Distance
11.10 pc
single adopted value
Spectral Type
M1.0 V
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.56 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
GJ 740
0.56 R☉
System Layout
Known planets
1 planets linked to this host
GJ 740 b
Radial Velocity
◌
Discovery
2021
Period
2.38 days
Radius
—
Mass
2.96 M⊕
Eq. Temp
829 K
GJ 740 and Its Lone Known Planet
GJ 740 is an M1.0 V star, a small, cool red dwarf, located 36.2 light-years away. It has a reported mass of 0.58 solar masses and a radius of 0.56 solar radii, both smaller than the Sun's corresponding values. Its temperature is 3910 K, cooler than the Sun's. One planet is known to orbit this host.
That planet, GJ 740 b, was discovered in 2021 using the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion. Its minimum mass is 2.96 Earth masses, larger than Earth's, meaning the true mass is at least this much. The planet completes one orbit in 2.38 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
9
Stellar refs
9
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitystable
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | — | 11.10 | Wright et al. 2004 | TICv8 |
| 3789 | 0.50 | 0.61 | — | -1.16 | M2V | 11.10 | Turnbull 2015 | TICv8 |
| 3784 | 0.58 | 0.59 | — | -1.19 | — | 11.10 | TICv8 | TICv8 |
| 3920 | — | 0.56 | — | -1.17 | — | 11.10 | Gaia DR2 | TICv8 |
| — | — | — | — | — | — | 11.10 | Nordstrom et al. 2004 | TICv8 |
| — | — | — | — | — | M0.5 | 11.10 | Hawley et al. 1996 | TICv8 |
| — | — | — | — | — | K5 | 11.10 | Cannon & Pickering 1918 | TICv8 |
| 3913 | 0.58 | 0.56 | — | -1.21 | M1.0 V | 11.10 | Toledo-Padrón et al. 2021 | TICv8 |
| — | — | — | — | — | — | 11.10 | Duncan et al. 1991 | TICv8 |