Temperature
4402 K
4401 to 4725.2
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Stellar HostProfile
Kepler-442
Unclassified star • 366.0 pc
Records
11
literature rows
Planets
1
system count
References
12
distinct source labels
TIC: TIC 120499135
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: Torres et al. 2015 • System source: TICv8
Mass
0.61 Msun
0.61 to 0.72
Radius
0.60 Rsun
0.54 to 0.83
Age
2.90 Gyr
2.90 to 3.09
Luminosity
-0.93 log(Lsun)
-0.93 to -0.83
Distance
366.0 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.60 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
Kepler-442
0.60 R☉
System Layout
Known planets
1 planets linked to this host
Kepler-442 b
Transit
◌
Discovery
2015
Period
112.3 days
Radius
1.34 R⊕
Mass
—
Eq. Temp
—
Kepler-442 and Its Earth-Like Planet
Kepler-442 is a star 1190 light-years away with one known planet. The host star is 2.9 billion years old, has a mass of 0.609 solar masses, a radius of 0.598 solar radii, and a temperature of 4400 K. Its reported mass estimate is smaller than the Sun's, its reported radius estimate is smaller than the Sun's, and its reported temperature is cooler than the Sun's.
The planet Kepler-442 b was discovered in 2015 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. Repeated dips help establish orbital periods. Kepler-442 b is classified as Earth-like, a size class that stays within 1.5 times Earth's radius. It orbits every 112 days and has a radius of 1.34 Earth radii, a reported radius estimate larger than Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
11
Stellar refs
11
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 |
|---|---|---|---|---|---|---|---|---|
| 4569 | 0.64 | 0.65 | — | — | — | 366.0 | Q1-Q12 KOI Table | TICv8 |
| 4402 | 0.61 | 0.60 | 2.90 | -0.93 | — | 366.0 | Torres et al. 2015 | TICv8 |
| 4569 | 0.64 | 0.65 | — | — | — | 366.0 | Q1-Q17 DR24 KOI Table | TICv8 |
| 4402 | — | 0.64 | — | — | — | 366.0 | Berger et al. 2018 | TICv8 |
| 4569 | 0.64 | 0.65 | — | — | — | 366.0 | Q1-Q16 KOI Table | TICv8 |
| 4501 | 0.70 | 0.66 | 3.09 | — | — | 366.0 | Morton et al. 2016 | TICv8 |
| 4725.2 | — | 0.54 | — | -0.89 | — | 366.0 | Gaia DR2 | TICv8 |
| — | — | — | — | — | — | 366.0 | Q1-Q17 DR25 Supplemental KOI Table | TICv8 |
| 4401 | 0.61 | 0.59 | — | — | — | 366.0 | Q1-Q17 DR25 KOI Table | TICv8 |
| 4563 | 0.72 | 0.62 | — | -0.83 | — | 366.0 | TICv8 | TICv8 |
| 4412 | — | 0.83 | — | — | — | 366.0 | Latham et al. 2005 | TICv8 |