Temperature
5191 K
4970 to 5194
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Stellar HostProfile
Kepler-821
Unclassified star • 614.6 pc
Records
13
literature rows
Planets
1
system count
References
14
distinct source labels
TIC: TIC 120573482
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
0.84 Msun
0.76 to 0.88
Radius
0.80 Rsun
0.75 to 0.85
Age
4.79 Gyr
4.79 to 11
Distance
614.6 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.80 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
Kepler-821
0.80 R☉
System Layout
Known planets
1 planets linked to this host
Kepler-821 b
Transit
◌
Discovery
2016
Period
1.92 days
Radius
1.31 R⊕
Mass
—
Eq. Temp
—
Kepler-821 and Its Earth-like Planet
Kepler-821 is a star located 2000 light-years away, with one planet known to orbit it. The host star is 4.79 billion years old and has a mass of 0.84 solar masses, a radius of 0.8 solar radii, and a temperature of 5190 K. Its reported mass and radius estimates are smaller than the Sun's, and its reported temperature is cooler than the Sun's.
The system's only known planet is Kepler-821 b, an Earth-like world discovered by transit in 2016. It completes an orbit every 1.92 days and has a radius of 1.31 Earth radii. That radius estimate is larger than Earth's, though it remains within the Earth-like size class, which covers planets up to 1.5 times Earth's radius.
Provenance
Underlying measurements and references
Evidence Summary
Rows
13
Stellar refs
13
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 |
|---|---|---|---|---|---|---|---|---|
| 5155 | 0.81 | 0.78 | — | — | — | 614.6 | Q1-Q17 DR24 KOI Table | TICv8 |
| 5194 | — | 0.80 | — | — | — | 614.6 | Berger et al. 2018 | TICv8 |
| 5074 | 0.85 | 0.85 | — | -0.36 | — | 614.6 | TICv8 | TICv8 |
| 5155 | 0.81 | 0.78 | — | — | — | 614.6 | Q1-Q12 KOI Table | TICv8 |
| — | — | — | — | — | — | 614.6 | Q1-Q17 DR25 Supplemental KOI Table | TICv8 |
| 5119 | 0.76 | 0.75 | 11 | — | — | 614.6 | Q1-Q8 KOI Table | TICv8 |
| 5155 | 0.81 | 0.78 | — | — | — | 614.6 | Q1-Q16 KOI Table | TICv8 |
| 4970 | — | 0.83 | — | -0.42 | — | 614.6 | Gaia DR2 | TICv8 |
| 5067 | — | 0.76 | — | — | — | 614.6 | Batalha et al. 2013 | TICv8 |
| 5194 | 0.88 | 0.81 | — | — | — | 614.6 | Q1-Q17 DR25 KOI Table | TICv8 |
| 5191 | 0.84 | 0.80 | 4.79 | — | — | 614.6 | Morton et al. 2016 | TICv8 |
| 5067 | — | 0.76 | — | — | — | 614.6 | Q1-Q6 KOI Table | TICv8 |
| 5067 | — | 0.83 | — | — | — | 614.6 | Latham et al. 2005 | TICv8 |