Temperature
5540 K
5336 to 5540
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Stellar HostProfile
GJ 3021
G6 V • 17.56 pc
Records
13
literature rows
Planets
1
system count
References
14
distinct source labels
HD: HD 1237TIC: TIC 290543478HIP: HIP 1292
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: Naef et al. 2001 • System source: TICv8
Mass
0.90 Msun
0.90 to 0.97
Radius
0.90 Rsun
0.88 to 0.96
Luminosity
-0.18 log(Lsun)
-0.20 to -0.17
Distance
17.56 pc
single adopted value
Spectral Type
G6 V
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.90 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
GJ 3021
0.90 R☉
System Layout
Known planets
1 planets linked to this host
GJ 3021 b
Radial Velocity
◌
Discovery
2000
Period
133.7 days
Radius
—
Mass
1071.0 M⊕
Eq. Temp
350 K
GJ 3021 and Its One Known Planet
GJ 3021 is a G6 V star 57.3 light-years away, with 0.9 solar masses, 0.9 solar radii, and a temperature of 5540 K. Its spectral type marks it as a main-sequence dwarf. The star is orbited by one known planet, GJ 3021 b, discovered in 2000 by the radial velocity method, which detects the wobble a planet's gravity induces in its star's motion.
GJ 3021 b has a minimum mass of 1070 Earth masses, a lower bound on its true mass, and orbits in 134 days. Its minimum mass is roughly 3.37 times Jupiter's mass and larger than Earth's. No additional planet is known for this host.
Provenance
Underlying measurements and references
Evidence Summary
Rows
13
Stellar refs
13
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | — | 17.56 | Nordstrom et al. 2004 | TICv8 |
| — | — | — | — | — | G0 | 17.56 | Cannon & Pickering 1918 | TICv8 |
| — | — | — | — | — | — | 17.56 | Henry et al. 1996 | TICv8 |
| 5489 | — | — | — | — | — | 17.56 | Suárez-Andrés et al. 2016 | TICv8 |
| 5536 | 0.90 | — | — | — | — | 17.56 | Butler et al. 2006 | TICv8 |
| 5336 | 0.90 | 0.96 | — | -0.17 | G6V | 17.56 | Turnbull 2015 | TICv8 |
| 5520 | — | 0.88 | — | -0.19 | — | 17.56 | Gaia DR2 | TICv8 |
| 5519.0 | 0.97 | 0.88 | — | -0.19 | — | 17.56 | TICv8 | TICv8 |
| 5540 | 0.90 | 0.90 | — | -0.18 | G6 V | 17.56 | Naef et al. 2001 | TICv8 |
| — | — | — | 0.37 | — | — | 17.56 | Sanz-Forcada et al. 2010 | TICv8 |
| — | — | — | — | — | G8.5 V (k) | 17.56 | Gray et al. 2006 | TICv8 |
| 5514 | 0.94 | — | — | -0.20 | — | 17.56 | Sousa et al. 2008 | TICv8 |
| — | — | — | — | — | G6 V | 17.56 | Michigan Catalog, Vol. 1 | TICv8 |