Temperature
5296 K
5127.6 to 5377
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Stellar HostProfile
Kepler-589
Unclassified star • 612.8 pc
Records
20
literature rows
Planets
2
system count
References
15
distinct source labels
TIC: TIC 123129910
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: Morton et al. 2016 • System source: TICv8
Mass
0.88 Msun
0.80 to 0.90
Radius
0.83 Rsun
0.78 to 0.98
Age
4.47 Gyr
4.47 to 14
Distance
612.8 pc
single adopted value
Planets
2
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.83 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
Kepler-589
0.83 R☉
System Layout
Known planets
2 planets linked to this host
Kepler-589 b
Transit
◌
Discovery
2016
Period
16.55 days
Radius
2.27 R⊕
Mass
—
Eq. Temp
—
Kepler-589 c
Transit
◌
Discovery
2021
Period
3.52 days
Radius
1.12 R⊕
Mass
—
Eq. Temp
—
Kepler-589: A Cool Dwarf with Two Small Worlds
Kepler-589 is a star located 2000 light-years away, and it hosts two known planets. The star is 4.47 billion years old and has a reported mass estimate of 0.88 solar masses, a reported radius estimate of 0.83 solar radii, and a temperature of 5300 K. Its mass and radius are smaller than the Sun's, and its temperature is cooler than the Sun's.
The two planets were both found by the transit method, which occurs when a planet passes in front of its star from our viewpoint and causes a small dip in observed brightness. Kepler-589 c was discovered in 2021 and is classified as Earth-like, with a radius of 1.12 Earth radii and an orbital period of 3.52 days. Its radius is larger than Earth's. Kepler-589 b was discovered in 2016 and is classified as a Super-Earth, with a radius of 2.27 Earth radii and an orbital period of 16.5 days. Its radius is also larger than Earth's.
Among the listed planets, Kepler-589 c has the shortest year and the smallest radius by reported estimates, while Kepler-589 b has the longest year and the largest radius by reported estimates.
Provenance
Underlying measurements and references
Evidence Summary
Rows
20
Stellar refs
14
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 |
|---|---|---|---|---|---|---|---|---|
| 5195 | — | — | — | — | — | 612.8 | KIC - SCPKEY | TICv8 |
| 5372 | 0.83 | 0.92 | — | — | — | 612.8 | Q1-Q16 KOI Table | TICv8 |
| 5337 | 0.80 | 0.87 | 14 | — | — | 612.8 | Q1-Q8 KOI Table | TICv8 |
| 5127.6 | — | 0.83 | — | -0.37 | — | 612.8 | Gaia DR2 | TICv8 |
| 5198 | — | 0.87 | — | — | — | 612.8 | Batalha et al. 2013 | TICv8 |
| 5372 | 0.83 | 0.92 | — | — | — | 612.8 | Q1-Q17 DR25 KOI Table | TICv8 |
| 5262 | 0.90 | 0.81 | — | -0.35 | — | 612.8 | TICv8 | TICv8 |
| 5372 | 0.83 | 0.92 | — | — | — | 612.8 | Q1-Q17 DR25 KOI Table | TICv8 |
| 5372 | 0.83 | 0.92 | — | — | — | 612.8 | Q1-Q12 KOI Table | TICv8 |
| 5198 | — | 0.87 | — | — | — | 612.8 | Q1-Q6 KOI Table | TICv8 |
| 5372 | 0.83 | 0.92 | — | — | — | 612.8 | Q1-Q17 DR24 KOI Table | TICv8 |
| 5198 | — | 0.98 | — | — | — | 612.8 | Latham et al. 2005 | TICv8 |
| 5372 | 0.83 | 0.92 | — | — | — | 612.8 | Q1-Q12 KOI Table | TICv8 |
| 5337 | 0.80 | 0.87 | 14 | — | — | 612.8 | Q1-Q8 KOI Table | TICv8 |
| 5296 | 0.88 | 0.83 | 4.47 | — | — | 612.8 | Morton et al. 2016 | TICv8 |
| 5377 | — | 0.78 | — | — | — | 612.8 | Berger et al. 2018 | TICv8 |
| — | — | — | — | — | — | 612.8 | Q1-Q17 DR25 Supplemental KOI Table | TICv8 |
| 5372 | 0.83 | 0.92 | — | — | — | 612.8 | Q1-Q17 DR24 KOI Table | TICv8 |
| 5372 | 0.83 | 0.92 | — | — | — | 612.8 | Q1-Q16 KOI Table | TICv8 |
| — | — | — | — | — | — | 612.8 | Q1-Q17 DR25 Supplemental KOI Table | TICv8 |