Temperature
5597 K
5581.9 to 5818.3
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Stellar HostProfile
TOI-669
Unclassified star • 142.9 pc
Records
5
literature rows
Planets
1
system count
References
6
distinct source labels
TIC: TIC 124573851
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: MacDougall et al. 2023 • System source: TICv8
Mass
0.92 Msun
0.90 to 1.00
Radius
0.99 Rsun
0.99 to 0.99
Age
7.90 Gyr
7.90 to 8.60
Luminosity
-0.06 log(Lsun)
-0.06 to -0.05
Distance
142.9 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.99 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
TOI-669
0.99 R☉
System Layout
Known planets
1 planets linked to this host
TOI-669 b
Transit
◌
Discovery
2023
Period
3.95 days
Radius
2.59 R⊕
Mass
10 M⊕
Eq. Temp
1124.8 K
TOI-669 and Its Neptune-like Planet
TOI-669 is a star 466 light-years away with a mass of 0.925 solar masses and a radius of 0.988 solar radii. Its reported mass estimate is smaller than the Sun's. The star is 7.9 billion years old and has a temperature of 5600 K, cooler than the Sun's. One planet orbits this host.
That planet, TOI-669 b, is Neptune-like and was discovered by transit in 2023. A transit occurs when a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness. TOI-669 b has a mass of 10 Earth masses, larger than Earth's, and a radius of 2.59 Earth radii, also larger than Earth's. Its mean density is 3.19 g/cm³, 0.578 times Earth's. It completes an orbit every 3.95 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
5
Stellar refs
5
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agedisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 5600 | 0.90 | 0.99 | 8.60 | — | — | 142.9 | Akana Murphy et al. 2023 | TICv8 |
| 5818.3 | — | 0.99 | — | — | — | 142.9 | Lafarga et al. 2026 | TICv8 |
| 5597 | 0.92 | 0.99 | 7.90 | -0.06 | — | 142.9 | MacDougall et al. 2023 | TICv8 |
| 5581.9 | — | 0.99 | — | — | — | 142.9 | ExoFOP | TICv8 |
| 5625.0 | 1.00 | 0.99 | — | -0.05 | — | 142.9 | TICv8 | TICv8 |