Temperature
5765 K
5701 to 5765
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Stellar HostProfile
HD 222155
G2 V • 50.61 pc
Records
8
literature rows
Planets
1
system count
References
9
distinct source labels
HD: HD 222155TIC: TIC 26370518HIP: HIP 116616
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: Boisse et al. 2012 • System source: TICv8
Mass
1.13 Msun
1.03 to 1.21
Radius
1.67 Rsun
1.67 to 1.85
Age
8.20 Gyr
7.85 to 8.20
Distance
50.61 pc
single adopted value
Spectral Type
G2 V
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.67 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 222155
1.67 R☉
System Layout
Known planets
1 planets linked to this host
HD 222155 b
Radial Velocity
◌
Discovery
2011
Period
3999 days
Radius
—
Mass
673.8 M⊕
Eq. Temp
—
HD 222155 and Its Planet
HD 222155 is a G2 V star, a Sun-like dwarf, located 165 light-years away. It is 8.2 billion years old and has a mass of 1.13 solar masses, a radius of 1.67 solar radii, and a temperature of 5770 K. Its reported mass and radius estimates are both larger than the Sun's. One planet orbits this star.
HD 222155 b was discovered in 2011 by the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion. The planet has a minimum mass of 674 Earth masses, larger than Earth's and roughly 2.12 times Jupiter's mass. Its orbital period is 4000 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
8
Stellar refs
8
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 |
|---|---|---|---|---|---|---|---|---|
| 5701 | 1.21 | 1.85 | — | — | — | 50.61 | Stassun et al. 2017 | TICv8 |
| — | — | — | — | — | G0 | 50.61 | Cannon & Pickering 1918 | TICv8 |
| 5740.7 | 1.03 | 1.81 | — | 0.51 | — | 50.61 | TICv8 | TICv8 |
| 5720 | — | 1.83 | — | 0.51 | — | 50.61 | Gaia DR2 | TICv8 |
| 5765 | 1.13 | — | — | — | G2 V | 50.61 | Xiao et al. 2023 | TICv8 |
| — | — | — | — | — | — | 50.61 | Nordstrom et al. 2004 | TICv8 |
| 5750 | 1.06 | 1.69 | 7.85 | — | — | 50.61 | Sousa et al. 2015 | TICv8 |
| 5765 | 1.13 | 1.67 | 8.20 | — | G2 V | 50.61 | Boisse et al. 2012 | TICv8 |