Temperature
3711 K
3711 to 3728
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Stellar HostProfile
K2-419 A
Unclassified star • 268.7 pc
Records
7
literature rows
Planets
1
system count
References
8
distinct source labels
TIC: TIC 437054764
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: Kanodia et al. 2024 • System source: TICv8
Mass
0.56 Msun
0.54 to 0.56
Radius
0.54 Rsun
0.53 to 0.55
Age
7.40 Gyr
single adopted value
Luminosity
-1.28 log(Lsun)
-1.30 to -1.28
Distance
268.7 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.54 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-419 A
0.54 R☉
System Layout
Known planets
1 planets linked to this host
K2-419 A b
Transit
◌
Discovery
2024
Period
20.36 days
Radius
10.55 R⊕
Mass
196 M⊕
Eq. Temp
377 K
K2-419 A b: A Transiting Jupiter-like Planet in a Two-Star System
K2-419 A is a star 876 light-years from Earth, within a system that also contains a stellar companion. The host star is estimated to be 7.4 billion years old, with a mass of 0.562 solar masses, a radius of 0.541 solar radii, and a temperature of 3710 K. Its mass and radius are both smaller than the Sun's, and its temperature is cooler.
One planet orbits this star: K2-419 A b, a Jupiter-like planet discovered by transit in 2024. A transit occurs when a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness; repeated dips help establish orbital periods. K2-419 A b completes an orbit every 20.4 days. Its radius is 10.6 Earth radii, larger than Earth's, which places it above the Jupiter-like threshold of four times Earth's radius. Its mass estimate is 196 Earth masses, also larger than Earth's, and its mean density of 0.92 g/cm³ is 0.167 times Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
7
Stellar refs
7
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositydisputed
Surface Gravitydisputed
Metallicitystable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 3728 | — | 0.54 | — | — | — | 268.7 | ExoFOP | TICv8 |
| — | — | — | — | — | — | 268.7 | Dressing et al. 2017 | TICv8 |
| — | — | 0.55 | — | — | — | 268.7 | Kruse et al. 2019 | TICv8 |
| 3728 | 0.54 | 0.54 | — | -1.30 | — | 268.7 | TICv8 | TICv8 |
| — | — | 0.53 | — | — | — | 268.7 | Petigura et al. 2018 | TICv8 |
| 3711 | 0.56 | 0.54 | 7.40 | -1.28 | — | 268.7 | Kanodia et al. 2024 | TICv8 |
| — | — | — | — | — | — | 268.7 | Pope et al. 2016 | TICv8 |