Temperature
4910 K
4769 to 4910
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Stellar HostProfile
nu Oct A
K1 IV • 21.20 pc
Records
7
literature rows
Planets
1
system count
References
8
distinct source labels
HIP: HIP 107089HD: HD 205478TIC: TIC 352542468
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: Cheng et al. 2025 • System source: TICv8
Mass
1.57 Msun
1.57 to 2.10
Radius
5.04 Rsun
5.04 to 6.19
Age
2.70 Gyr
2.70 to 2.80
Luminosity
1.12 log(Lsun)
1.12 to 1.25
Distance
21.20 pc
single adopted value
Spectral Type
K1 IV
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 5.04 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
nu Oct A
5.04 R☉
System Layout
Known planets
1 planets linked to this host
nu Oct A b
Radial Velocity
◌
Discovery
2016
Period
402.4 days
Radius
—
Mass
696.0 M⊕
Eq. Temp
—
nu Oct A b: A Giant Planet Around a K-Type Subgiant
The star nu Oct A lies 69.1 light-years away and has a spectral type of K1 IV. It is 2.7 billion years old and has a mass of 1.57 solar masses, larger than the Sun's. Its radius of 5.04 solar radii is also larger than the Sun's, while its temperature of 4910 K is cooler than the Sun's. One planet orbits this host.
That planet is nu Oct A b, discovered in 2016 by the radial velocity method, which detects the wobble a planet's gravity induces in its star's motion. Its mass of 696 Earth masses is larger than Earth's and roughly 2.19 times Jupiter's mass. The planet completes its orbit in 402 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
7
Stellar refs
7
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agedisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitystable
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | K1 III | 21.20 | Gray et al. 2006 | TICv8 |
| — | — | — | — | — | K0 III | 21.20 | Michigan Catalog, Vol. 1 | TICv8 |
| 4860 | 1.61 | 5.81 | 2.80 | 1.23 | K1 IIIb-IV | 21.20 | Ramm et al. 2021 | TICv8 |
| — | — | — | — | — | K0 | 21.20 | Cannon & Pickering 1918 | TICv8 |
| 4860 | 1.61 | 5.81 | 2.80 | — | K0 III | 21.20 | Ramm et al. 2016 | TICv8 |
| 4910 | 1.57 | 5.04 | 2.70 | 1.12 | K1 IV | 21.20 | Cheng et al. 2025 | TICv8 |
| 4769 | 2.10 | 6.19 | — | 1.25 | K0III | 21.20 | Turnbull 2015 | TICv8 |