Temperature
4775 K
4707.2 to 4888
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Stellar HostProfile
gam Cep
K1 III-IV • 14.10 pc
Records
15
literature rows
Planets
1
system count
References
16
distinct source labels
HD: HD 222404HIP: HIP 116727TIC: TIC 367912480
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: Knudstrup et al. 2023 • System source: TICv8
Mass
1.27 Msun
1.18 to 1.88
Radius
4.74 Rsun
4.66 to 5.05
Age
5.70 Gyr
4.08 to 5.70
Distance
14.10 pc
single adopted value
Spectral Type
K1 III-IV
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 4.74 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
gam Cep
4.74 R☉
System Layout
Known planets
1 planets linked to this host
gam Cep b
Radial Velocity
◌
Discovery
2003
Period
913 days
Radius
—
Mass
2097.7 M⊕
Eq. Temp
—
Gam Cep: A K-Type Star with a Single Known Planet
Gam Cep is a K-type star located 46 light-years from Earth. Its spectral type, K1 III-IV, places it in the cooler part of the K class. The star has an age of 5.7 billion years, a mass of 1.27 solar masses, a radius of 4.74 solar radii, and a temperature of 4780 K. Its reported mass and radius estimates are larger than the Sun's, while its reported temperature is cooler than the Sun's. One known planet orbits this host.
That planet, gam Cep b, was discovered in 2003 by the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion. It has a mass of 2100 Earth masses, roughly 6.6 times Jupiter's mass and larger than Earth's, and an orbital period of 913 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
15
Stellar refs
15
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agedisputed
Luminositystable
Surface Gravitydisputed
Metallicitydisputed
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 4775 | 1.27 | 4.74 | 5.70 | — | K1 III-IV | 14.10 | Knudstrup et al. 2023 | TICv8 |
| 4888 | 1.59 | 4.66 | — | — | K1 IV | 14.10 | Hatzes et al. 2003 | TICv8 |
| — | — | — | — | — | K1 III-IV | 14.10 | Garrison & Beattie 1998 | TICv8 |
| 4744 | 1.20 | 5 | 5.40 | — | K1 IV | 14.10 | Baines et al. 2009 | TICv8 |
| — | — | — | — | — | K0 | 14.10 | Cannon & Pickering 1918 | TICv8 |
| — | — | — | — | — | K1 III | 14.10 | Gray et al. 2003 | TICv8 |
| 4707.2 | — | — | — | — | — | 14.10 | Gaia DR2 | TICv8 |
| — | — | — | — | — | — | 14.10 | Duncan et al. 1991 | TICv8 |
| — | — | — | 4.08 | — | — | 14.10 | Sanz-Forcada et al. 2010 | TICv8 |
| 4764 | 1.26 | — | — | — | — | 14.10 | Mortier et al. 2013 | TICv8 |
| 4833.6 | — | — | — | — | — | 14.10 | TICv8 | TICv8 |
| — | 1.40 | 4.90 | — | — | — | 14.10 | Endl et al. 2011 | TICv8 |
| — | 1.18 | — | — | — | — | 14.10 | Benedict et al. 2018 | TICv8 |
| — | 1.40 | — | — | — | — | 14.10 | Neuhäuser et al. 2007 | TICv8 |
| 4761 | 1.88 | 5.05 | — | 1.07 | K1IV | 14.10 | Turnbull 2015 | TICv8 |