Temperature
5578 K
5428.1 to 5938
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Stellar HostProfile
Kepler-259
Unclassified star • 1002.1 pc
Records
22
literature rows
Planets
2
system count
References
16
distinct source labels
TIC: TIC 158664318
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
0.93 Msun
0.87 to 1.01
Radius
0.90 Rsun
0.80 to 0.95
Age
4.47 Gyr
0.40 to 7.94
Distance
1002.1 pc
single adopted value
Planets
2
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.90 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
Kepler-259
0.90 R☉
System Layout
Known planets
2 planets linked to this host
Kepler-259 b
Transit
◌
Discovery
2014
Period
8.12 days
Radius
2.80 R⊕
Mass
—
Eq. Temp
—
Kepler-259 c
Transit
◌
Discovery
2014
Period
36.92 days
Radius
2.70 R⊕
Mass
—
Eq. Temp
—
Kepler-259: A Distant Star With Two Neptune-Like Planets
Kepler-259 is a star located 3270 light-years away. It has 0.93 solar masses, 0.9 solar radii, an age of 4.47 billion years, and a temperature of 5580 K. Its reported mass estimate is smaller than the Sun's, and its reported temperature is cooler than the Sun's. Two planets are known to orbit this host.
Both planets were discovered by transit in 2014. A transit occurs when a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness. Kepler-259 b is a Neptune-like planet with an orbital period of 8.12 days and a radius of 2.8 Earth radii. Kepler-259 c is also Neptune-like, with an orbital period of 36.9 days and a radius of 2.7 Earth radii. Each planet's reported radius estimate is larger than Earth's. Among the listed planets, Kepler-259 b has the shortest year and the largest radius by reported estimates, while Kepler-259 c has the longest year and the smallest radius by reported estimates.
Provenance
Underlying measurements and references
Evidence Summary
Rows
22
Stellar refs
15
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 |
|---|---|---|---|---|---|---|---|---|
| 5926 | 0.98 | 0.89 | — | — | — | 1002.1 | Q1-Q17 DR25 KOI Table | TICv8 |
| 5677 | — | 0.86 | — | — | — | 1002.1 | Q1-Q6 KOI Table | TICv8 |
| 5931 | 1.01 | 0.91 | 0.40 | — | — | 1002.1 | Q1-Q8 KOI Table | TICv8 |
| 5926 | 0.98 | 0.89 | — | — | — | 1002.1 | Q1-Q17 DR25 KOI Table | TICv8 |
| 5677 | — | 0.86 | — | — | — | 1002.1 | Q1-Q6 KOI Table | TICv8 |
| 5926 | 0.98 | 0.89 | — | — | — | 1002.1 | Q1-Q16 KOI Table | TICv8 |
| 5613 | 0.99 | 0.89 | — | -0.15 | — | 1002.1 | TICv8 | TICv8 |
| 5931 | 1.01 | 0.91 | 0.40 | — | — | 1002.1 | Q1-Q8 KOI Table | TICv8 |
| 5926 | 0.98 | 0.89 | — | — | — | 1002.1 | Q1-Q12 KOI Table | TICv8 |
| 5926 | 0.98 | 0.89 | — | — | — | 1002.1 | Q1-Q16 KOI Table | TICv8 |
| 5926 | 0.98 | 0.89 | — | — | — | 1002.1 | Q1-Q17 DR24 KOI Table | TICv8 |
| — | — | — | — | — | — | 1002.1 | Q1-Q17 DR25 Supplemental KOI Table | TICv8 |
| 5578 | 0.93 | 0.90 | 4.47 | — | — | 1002.1 | Morton et al. 2016 | TICv8 |
| — | — | — | — | — | — | 1002.1 | Q1-Q17 DR25 Supplemental KOI Table | TICv8 |
| 5511 | — | 0.92 | — | — | — | 1002.1 | Berger et al. 2018 | TICv8 |
| 5677 | — | 0.80 | — | — | — | 1002.1 | Latham et al. 2005 | TICv8 |
| 5926 | 0.98 | 0.89 | — | — | — | 1002.1 | Q1-Q17 DR24 KOI Table | TICv8 |
| 5677 | — | 0.86 | — | — | — | 1002.1 | Batalha et al. 2013 | TICv8 |
| 5938 | — | 0.90 | — | — | — | 1002.1 | Rowe et al. 2014 | TICv8 |
| 5428.1 | — | 0.95 | — | -0.16 | — | 1002.1 | Gaia DR2 | TICv8 |
| 5926 | 0.98 | 0.89 | — | — | — | 1002.1 | Q1-Q12 KOI Table | TICv8 |
| 5511 | 0.87 | 0.90 | 7.94 | — | — | 1002.1 | Fulton & Petigura 2018 | TICv8 |