Key parameters at a glance
- A radius of 1.25 Earth radii
- A mass of 3.78 Earth masses
- Surface gravity around 2.42 g
- An orbital period of 6.030 days
- Semi-major axis 0.0684 AU
- Equilibrium temperature 1,413 K (1140 °C)
- Distance from Earth 3,026.67 light-years
- Earth Similarity Index 0.186
- Travel time at Voyager 1 speed 53,375,247 years
1 sibling around Kepler-101
Kepler-101 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-101 b | Neptune-like | 5.77 | 51.10 | 3.488 | 1,513 | 2014 |
| Kepler-101 c this | Super-Earth | 1.25 | 3.78 | 6.030 | 1,413 | 2014 |
Kepler-101 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#1161of 1176
top 98.6%
This planet
1.25R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-101 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.25 | 11.21 |
| Mass (M⊕) | 1.00 | 3.78 | 317.83 |
| Density (g/cm³) | 5.51 | 10.50 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.42 | 2.53 |
| Insolation (S⊕) | 1.00 | 596.07 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 3.780 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 48304653
Gaia DR2
Gaia DR2 2131709921047710336
Gaia DR3
Gaia DR3 2131709921047710336
System
Kepler-101
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 6.03 Earth days (1.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0684 AU.
Transit Fingerprint
Depth
0.005 %
Duration
3.870 h
Impact parameter b
0.750
Rp / R★
0.007320
Transit midpoint (BJD)
2,454,965.4860
Photometric dip
Transit produces a flux drop of 55 ppm lasting ≈ 3.87 h.
Extended Orbital Architecture
Planet / star radius ratio
0.007320
Semi-major axis / stellar radius
8.000
Impact parameter (b)
0.750
RV semi-amplitude (K)
1.170 m/s
Transit mid-time (BJD)
2,454,965.4860
Long. of periastron (ω)
90.00°
Angular separation (arcsec)
0.07370
Eq. Temperature
1,413K
(1140 °C)
Insolation (S⊕)
596.07
Earth = 1.00
Earth Similarity (ESI)
0.186
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
Discovery Paper
Primary reference
Rowe et al. 2014Instrument
Kepler CCD Array
Publication
2014-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2014 at Kepler (12 shown).
Host System: Kepler-101
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,667 K — cooler than the Sun (5,778 K)
Estimated Age
5.90 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.560 R☉
Stellar Mass
1.170 M☉
Metallicity [Fe/H]
0.33
Extended Stellar Properties
Surface gravity (log g)
4.120 dex
Stellar density
0.437 g/cm³
Systemic radial velocity
-77.71 km/s
Rotational v·sin i
2.60 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 15 bands
Astrometric Data
Parallax
1.049 mas
Total Proper Motion
6.936 mas/yr
PM Right Ascension
0.71 mas/yr
PM Declination
6.90 mas/yr
Galactic Cartesian (pc)
x = 0.152 · y = -0.647 · z = 0.747
Equatorial (J2000)
RA 283.25551° · Dec 48.35525°
Galactic ℓ, b
78.047° · 19.673°
Ecliptic λ, β
297.219° · 70.544°
HTM-20 index
1917243441
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