Temperature
5595 K
5545.7 to 5680
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Stellar HostProfile
HD 30177
Unclassified star • 55.59 pc
Records
16
literature rows
Planets
2
system count
References
17
distinct source labels
TIC: TIC 220408612HIP: HIP 21850HD: HD 30177
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
1.10 Msun
0.93 to 1.10
Radius
1.04 Rsun
1.02 to 1.19
Age
3.50 Gyr
2.52 to 14.20
Luminosity
-0.02 log(Lsun)
-0.02 to 0.08
Distance
55.59 pc
single adopted value
Planets
2
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.04 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 30177
1.04 R☉
System Layout
Known planets
2 planets linked to this host
HD 30177 b
Radial Velocity
◌
Discovery
2002
Period
2539 days
Radius
—
Mass
2622.1 M⊕
Eq. Temp
—
HD 30177 c
Radial Velocity
◌
Discovery
2016
Period
11320 days
Radius
—
Mass
1484.3 M⊕
Eq. Temp
—
HD 30177 and Its Two Known Planets
HD 30177 is a G8 V star 181 light-years away. It is a G-type main-sequence dwarf with 1.1 solar masses, 1.04 solar radii, and a temperature of 5600 K that is cooler than the Sun's. It is 3.5 billion years old, and two planets are known to orbit it.
Both planets were found by the radial velocity method, which detects the wobble a planet's gravity induces in its star's motion. HD 30177 b was discovered in 2002 and has a mass of 2620 Earth masses, roughly 8.25 times Jupiter's mass and larger than Earth's. It completes one orbit every 2540 days. HD 30177 c was discovered in 2016 and has a mass of 1480 Earth masses, roughly 4.67 times Jupiter's mass and also larger than Earth's. Its orbital period is 11300 days. Among the listed planets, HD 30177 b has the shortest year and the largest reported mass, while HD 30177 c has the longest year and the smallest reported mass.
Provenance
Underlying measurements and references
Evidence Summary
Rows
16
Stellar refs
16
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 |
|---|---|---|---|---|---|---|---|---|
| 5556 | 0.93 | 1.13 | — | — | — | 55.59 | Stassun et al. 2017 | TICv8 |
| 5595 | 1.10 | 1.04 | 3.50 | -0.02 | — | 55.59 | Ghezzi et al. 2010 | TICv8 |
| — | — | — | — | — | G8 V | 55.59 | Michigan Catalog, Vol. 1 | TICv8 |
| — | 0.95 | 1.14 | 11.60 | — | — | 55.59 | Takeda et al. 2007 | TICv8 |
| 5601 | — | — | — | — | — | 55.59 | Suárez-Andrés et al. 2016 | TICv8 |
| — | — | — | — | — | — | 55.59 | Valenti & Fischer 2005 | TICv8 |
| — | 0.98 | — | — | — | — | 55.59 | Feng et al. 2022 | TICv8 |
| 5580 | 0.99 | — | 11.60 | — | — | 55.59 | Wittenmyer et al. 2017 | TICv8 |
| 5588 | 1.01 | — | — | — | — | 55.59 | Santos et al. 2004 | TICv8 |
| — | — | — | — | — | G5 | 55.59 | Cannon & Pickering 1918 | TICv8 |
| 5607 | 1.05 | 1.02 | 2.52 | — | — | 55.59 | Barbato et al. 2018 | TICv8 |
| — | 0.95 | — | 14.20 | — | — | 55.59 | Tinney et al. 2003 | TICv8 |
| 5576 | — | 1.18 | — | 0.08 | — | 55.59 | Gaia DR2 | TICv8 |
| 5680 | 0.98 | — | 3.55 | — | G8 V | 55.59 | Peña et al. 2026 | TICv8 |
| 5545.7 | 0.98 | 1.19 | — | 0.08 | — | 55.59 | TICv8 | TICv8 |
| 5590 | 1 | — | — | — | — | 55.59 | Santos et al. 2003 | TICv8 |