Temperature
5997 K
5918.3 to 6025
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Stellar HostProfile
HD 82943
G2/3V • 27.59 pc
Records
19
literature rows
Planets
2
system count
References
20
distinct source labels
TIC: TIC 405485269HIP: HIP 47007HD: HD 82943
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: Turnbull 2015 • System source: TICv8
Mass
1.13 Msun
1.04 to 1.20
Radius
1.14 Rsun
1.03 to 1.20
Age
2.84 Gyr
1 to 2.90
Luminosity
0.21 log(Lsun)
0.15 to 0.21
Distance
27.59 pc
single adopted value
Spectral Type
G2/3V
Multiple classifications reported
Planets
2
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.14 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 82943
1.14 R☉
System Layout
Known planets
2 planets linked to this host
HD 82943 b
Radial Velocity
◌
Discovery
2003
Period
441.5 days
Radius
—
Mass
534.2 M⊕
Eq. Temp
—
HD 82943 c
Radial Velocity
◌
Discovery
2003
Period
220.1 days
Radius
—
Mass
622.6 M⊕
Eq. Temp
—
HD 82943: A Sun-Like Star With Two Known Planets
HD 82943 is a G2/3V star located 90 light-years away. This spectral type indicates a star similar in class to the Sun. The star has a mass of 1.13 solar masses and a radius of 1.14 solar radii, both larger than the Sun's corresponding values. Its temperature is 6000 K, hotter than the Sun's, and its age is 2.84 billion years.
Two planets are known to orbit this host. Both were discovered in 2003 using the radial velocity method, which detects the wobble a planet's gravity induces in its star's motion. HD 82943 c has a mass of 623 Earth masses, roughly 1.96 times Jupiter's mass, and completes one orbit in 220 days. Among the listed planets, it has the shortest year and the largest reported mass. HD 82943 b has a mass of 534 Earth masses, roughly 1.68 times Jupiter's mass, and an orbital period of 441 days. Among the listed planets, it has the longest year and the smallest reported mass. Both planets are more massive than Earth.
Provenance
Underlying measurements and references
Evidence Summary
Rows
19
Stellar refs
19
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agedisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 5990 | — | — | — | — | — | 27.59 | Maldonado et al. 2015 | TICv8 |
| 5992 | — | — | — | — | — | 27.59 | Suárez-Andrés et al. 2016 | TICv8 |
| — | — | — | — | — | — | 27.59 | Nordstrom et al. 2004 | TICv8 |
| 6016 | 1.20 | — | — | — | — | 27.59 | Santos et al. 2004 | TICv8 |
| 6011 | 1.04 | 1.03 | 2.35 | 0.16 | — | 27.59 | Liu et al. 2014 | TICv8 |
| — | — | — | — | — | — | 27.59 | Valenti & Fischer 2005 | TICv8 |
| 5997 | 1.13 | 1.14 | 2.84 | 0.21 | G2/3V | 27.59 | Turnbull 2015 | TICv8 |
| 6011 | 1.20 | 1.10 | 1 | 0.15 | — | 27.59 | Ghezzi et al. 2010 | TICv8 |
| — | — | — | — | — | G0 | 27.59 | Cannon & Pickering 1918 | TICv8 |
| 5918.3 | 1.15 | 1.20 | — | — | — | 27.59 | Rosenthal et al. 2021 | TICv8 |
| 5989 | 1.15 | — | — | 0.17 | — | 27.59 | Sousa et al. 2008 | TICv8 |
| 6005 | 1.15 | — | 2.90 | 0.18 | — | 27.59 | Mayor et al. 2004 | TICv8 |
| — | 1.13 | 1.14 | 2.84 | — | — | 27.59 | Takeda et al. 2007 | TICv8 |
| 5935 | 1.08 | 1.18 | — | 0.19 | — | 27.59 | TICv8 | TICv8 |
| — | — | — | — | — | F9 V Fe+0.5 | 27.59 | Gray et al. 2006 | TICv8 |
| 6025 | 1.15 | — | — | — | — | 27.59 | Santos et al. 2003 | TICv8 |
| 5984 | — | 1.16 | — | 0.20 | — | 27.59 | Gaia DR2 | TICv8 |
| — | — | — | — | — | — | 27.59 | Wright et al. 2004 | TICv8 |
| — | — | — | — | — | G2/3 V | 27.59 | Michigan Catalog, Vol. 5 | TICv8 |