Temperature
5982 K
5844 to 6129
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Stellar HostProfile
HD 50554
Unclassified star • 31.17 pc
Records
22
literature rows
Planets
1
system count
References
22
distinct source labels
HIP: HIP 33212TIC: TIC 80224448HD: HD 50554
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: Ghezzi et al. 2010 • System source: TICv8
Mass
1.05 Msun
1.02 to 1.11
Radius
1.07 Rsun
1.02 to 1.18
Age
3.50 Gyr
2.16 to 12.21
Luminosity
0.12 log(Lsun)
0.12 to 0.18
Distance
31.17 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.07 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 50554
1.07 R☉
System Layout
Known planets
1 planets linked to this host
HD 50554 b
Radial Velocity
◌
Discovery
2002
Period
1293 days
Radius
—
Mass
1574.5 M⊕
Eq. Temp
—
HD 50554 and Its Three Planets
HD 50554 is a star 102 light-years away with three planets orbiting it. The host is an F8 V star, a main-sequence dwarf whose temperature class is hotter than the Sun's, with a reported temperature of 5980 K. Its mass is 1.05 solar masses and its radius is 1.07 solar radii, and it is 3.5 billion years old.
HD 50554 b was discovered in 2002 by the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion. Its reported mass estimate is 1860 Earth masses, roughly 5.85 times Jupiter's mass and larger than Earth's, and its orbital period is 1240 days, the longest year among the listed planets.
HD 50554 c and HD 50554 d were both discovered in 2026 by the transit method, in which a planet passing in front of its star from our viewpoint causes a small dip in observed brightness. Both are classified as Earth-like, meaning their radii stay within 1.5 times Earth's radius. HD 50554 c has a reported upper limit of 5.3 Earth masses and a radius of 1.31 Earth radii, larger than Earth's, with an orbital period of 5.97 days, the shortest year among the listed planets. HD 50554 d has a reported upper limit of 10.4 Earth masses and a radius of 1.41 Earth radii, larger than Earth's, with an orbital period of 28.1 days, the second-shortest year among the listed planets.
Provenance
Underlying measurements and references
Evidence Summary
Rows
22
Stellar refs
21
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 |
|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | — | 31.17 | Nidever et al. 2002 | TICv8 |
| 5984 | — | — | — | — | — | 31.17 | Maldonado et al. 2015 | TICv8 |
| 6129 | — | — | — | — | — | 31.17 | Suárez-Andrés et al. 2016 | TICv8 |
| 5844 | 1.06 | 1.10 | — | — | F8 V | 31.17 | Fischer et al. 2002 | TICv8 |
| — | 1.02 | 1.18 | 6.84 | — | — | 31.17 | Takeda et al. 2007 | TICv8 |
| 6007 | — | 1.13 | — | — | — | 31.17 | ExoFOP | TICv8 |
| — | — | — | 12.21 | — | — | 31.17 | Sanz-Forcada et al. 2010 | TICv8 |
| 6026 | 1.09 | — | — | — | — | 31.17 | Santos et al. 2004 | TICv8 |
| — | — | — | — | — | — | 31.17 | Nordstrom et al. 2004 | TICv8 |
| 6007 | — | 1.13 | — | — | — | 31.17 | ExoFOP | TICv8 |
| 5968.4 | 1.04 | 1.15 | — | — | — | 31.17 | Rosenthal et al. 2021 | TICv8 |
| 6007 | 1.11 | 1.13 | — | 0.18 | — | 31.17 | TICv8 | TICv8 |
| — | — | — | — | — | — | 31.17 | Valenti & Fischer 2005 | TICv8 |
| 5982 | 1.05 | 1.07 | 3.50 | 0.12 | — | 31.17 | Ghezzi et al. 2010 | TICv8 |
| — | — | — | — | — | F8 | 31.17 | Cannon & Pickering 1918 | TICv8 |
| 6050 | 1.10 | — | — | — | F8 V | 31.17 | Xiao et al. 2023 | TICv8 |
| 5929 | 1.05 | — | — | — | — | 31.17 | Butler et al. 2006 | TICv8 |
| 5987 | 1.04 | 1.02 | 2.16 | 0.14 | — | 31.17 | Liu et al. 2014 | TICv8 |
| — | — | — | — | — | — | 31.17 | Wright et al. 2004 | TICv8 |
| 6052 | — | 1.11 | — | 0.18 | — | 31.17 | Gaia DR2 | TICv8 |
| 6050 | 1.11 | — | — | — | — | 31.17 | Santos et al. 2003 | TICv8 |
| 6012 | 1.10 | 1.11 | — | 0.16 | F8 | 31.17 | Turnbull 2015 | TICv8 |