Temperature
4775 K
4699 to 4775
←Back to Stellar Hosts
Stellar HostProfile
TOI-1259 A
Unclassified star • 118.1 pc
Records
4
literature rows
Planets
1
system count
References
5
distinct source labels
TIC: TIC 288735205
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: Martin et al. 2021 • System source: TICv8
Mass
0.74 Msun
0.74 to 0.75
Radius
0.71 Rsun
0.71 to 0.77
Age
4.80 Gyr
single adopted value
Distance
118.1 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.71 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
TOI-1259 A
0.71 R☉
System Layout
Known planets
1 planets linked to this host
TOI-1259 A b
Transit
◌
Discovery
2021
Period
3.48 days
Radius
11.60 R⊕
Mass
141 M⊕
Eq. Temp
—
TOI-1259 A b: A Jupiter-like World on a Short Orbit
TOI-1259 A is a star 385 light-years away, with one known planet in orbit around it. The star is 4.8 billion years old and has a mass of 0.744 solar masses and a radius of 0.711 solar radii. Its temperature is 4780 K, and its reported mass, radius, and temperature estimates are all smaller or cooler than the Sun's.
The planet TOI-1259 A b was discovered in 2021 by the transit method, in which a planet passes in front of its star from our viewpoint and causes a small dip in observed brightness. It is classified as Jupiter-like, a size class for planets exceeding 4 times Earth's radius. Its radius is 11.6 Earth radii, larger than Earth's, and its mass is 141 Earth masses, also larger than Earth's. Its mean density is 0.498 g/cm³, 0.0903 times Earth's.
TOI-1259 A b completes an orbit in 3.48 days, and its mean density reflects a mass and radius both far above Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
4
Stellar refs
4
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositystable
Surface Gravitydisputed
Metallicitystable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | 0.75 | 0.71 | — | — | — | 118.1 | Veldhuis et al. 2026 | TICv8 |
| 4775 | 0.74 | 0.71 | 4.80 | — | — | 118.1 | Martin et al. 2021 | TICv8 |
| 4699 | — | 0.77 | — | — | — | 118.1 | ExoFOP | TICv8 |
| 4699 | 0.75 | 0.77 | — | -0.59 | — | 118.1 | TICv8 | TICv8 |