Temperature
4483 K
4357 to 4542
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Stellar HostProfile
Kepler-661
Unclassified star • 534.8 pc
Records
13
literature rows
Planets
1
system count
References
14
distinct source labels
TIC: TIC 164557360
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
0.70 Msun
0.62 to 0.77
Radius
0.67 Rsun
0.59 to 0.69
Age
4.27 Gyr
4.27 to 13.60
Distance
534.8 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.67 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
Kepler-661
0.67 R☉
System Layout
Known planets
1 planets linked to this host
Kepler-661 b
Transit
◌
Discovery
2016
Period
6.03 days
Radius
3.07 R⊕
Mass
—
Eq. Temp
—
Kepler-661 and Its Lone Known Planet
Kepler-661 is a star 1740 light-years away with one planet in its system. The host star is estimated to be 4.27 billion years old. Its mass is 0.7 solar masses, its radius is 0.67 solar radii, and its temperature is 4480 K. The star's 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 one known planet orbiting this star is Kepler-661 b, a Neptune-like world discovered by the transit method in 2016. A transit occurs when a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness. Kepler-661 b completes an orbit every 6.03 days. Its radius is 3.07 Earth radii, a reported radius estimate larger than Earth's.
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 |
|---|---|---|---|---|---|---|---|---|
| 4473 | 0.62 | 0.59 | 13.60 | — | — | 534.8 | Q1-Q8 KOI Table | TICv8 |
| 4357 | — | 0.61 | — | — | — | 534.8 | Batalha et al. 2013 | TICv8 |
| 4392 | 0.69 | 0.68 | — | -0.81 | — | 534.8 | TICv8 | TICv8 |
| 4357 | — | 0.61 | — | — | — | 534.8 | Latham et al. 2005 | TICv8 |
| 4442 | — | 0.63 | — | -0.86 | — | 534.8 | Gaia DR2 | TICv8 |
| 4536 | 0.77 | 0.69 | — | — | — | 534.8 | Q1-Q16 KOI Table | TICv8 |
| 4536 | 0.77 | 0.69 | — | — | — | 534.8 | Q1-Q17 DR24 KOI Table | TICv8 |
| — | — | — | — | — | — | 534.8 | Q1-Q17 DR25 Supplemental KOI Table | TICv8 |
| 4542 | — | 0.64 | — | — | — | 534.8 | Berger et al. 2018 | TICv8 |
| 4357 | — | 0.61 | — | — | — | 534.8 | Q1-Q6 KOI Table | TICv8 |
| 4537 | 0.76 | 0.67 | — | — | — | 534.8 | Q1-Q17 DR25 KOI Table | TICv8 |
| 4536 | 0.77 | 0.69 | — | — | — | 534.8 | Q1-Q12 KOI Table | TICv8 |
| 4483 | 0.70 | 0.67 | 4.27 | — | — | 534.8 | Morton et al. 2016 | TICv8 |