Key parameters at a glance
- A radius of 0.82 Earth radii
- A mass of 5.30 Earth masses
- Surface gravity around 7.88 g
- An orbital period of 6.165 days
- Semi-major axis 0.0649 AU
- Equilibrium temperature 1,021 K (748 °C)
- Distance from Earth 1,449.18 light-years
- Earth Similarity Index 0.186
- Travel time at Voyager 1 speed 25,556,338 years
3 siblings around Kepler-106
Kepler-106 b shares its host star with 3 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-106 b this | Rocky Terrestrial | 0.82 | 5.30 | 6.165 | 1,021 | 2014 |
| Kepler-106 c | Sub-Neptune | 2.50 | 10.44 | 13.571 | 785 | 2014 |
| Kepler-106 d | Rocky Terrestrial | 0.95 | 8.10 | 23.980 | 649 | 2014 |
| Kepler-106 e | Sub-Neptune | 2.56 | 11.17 | 43.845 | 531 | 2014 |
Kepler-106 b Planet Profile
Physical Specs
Classification
Planet Type
Rocky Terrestrial
Discovery
Size rank in cohort
Rank by radius
#465of 570
top 81.4%
This planet
0.82R⊕
Rocky Terrestrial median
1.01R⊕
Nearest-size peers
| Metric | Earth | Kepler-106 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 0.82 | 11.21 |
| Mass (M⊕) | 1.00 | 5.30 | 317.83 |
| Density (g/cm³) | 5.51 | — | 1.33 |
| Surface Gravity (g) | 1.00 | 7.88 | 2.53 |
| Insolation (S⊕) | 1.00 | 277.22 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 5.300 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 184997417
Gaia DR2
Gaia DR2 2082074942519913344
Gaia DR3
Gaia DR3 2082074942519913344
System
Kepler-106
Percentile among Rocky Terrestrial cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 6.16 Earth days (1.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0649 AU.
Transit Fingerprint
Depth
0.006 %
Duration
3.262 h
Impact parameter b
0.390
Rp / R★
0.007258
Transit midpoint (BJD)
2,454,968.6404
Photometric dip
Transit produces a flux drop of 56 ppm lasting ≈ 3.26 h.
Extended Orbital Architecture
Planet / star radius ratio
0.007258
Semi-major axis / stellar radius
11.190
Impact parameter (b)
0.390
Transit mid-time (BJD)
2,454,968.6404
Angular separation (arcsec)
0.14600
Eq. Temperature
1,021K
(748 °C)
Insolation (S⊕)
277.22
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
Marcy et al. 2014Instrument
Kepler CCD Array
Publication
2014-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2014 at Kepler (12 shown).
Host System: Kepler-106
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,858 K — hotter than the Sun (5,778 K)
Estimated Age
4.83 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.040 R☉
Stellar Mass
1.000 M☉
Metallicity [Fe/H]
-0.12
Extended Stellar Properties
Surface gravity (log g)
4.407 dex
Stellar density
1.380 g/cm³
Systemic radial velocity
-56.18 km/s
Rotational v·sin i
0.30 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.222 mas
Total Proper Motion
7.971 mas/yr
PM Right Ascension
7.93 mas/yr
PM Declination
-0.76 mas/yr
Galactic Cartesian (pc)
x = 0.367 · y = -0.614 · z = 0.699
Equatorial (J2000)
RA 300.86401° · Dec 44.33755°
Galactic ℓ, b
79.671° · 7.003°
Ecliptic λ, β
322.130° · 62.304°
HTM-20 index
-1622776104
Similar Worlds
Kepler-1601 b
Rocky Terrestrial · G-type yellow (Sun-like)
Radius 0.82 R⊕ · 2,101.9 ly
Kepler-1141 b
Rocky Terrestrial · G-type yellow (Sun-like)
Radius 0.82 R⊕ · 1,283.9 ly
Kepler-20 e
Rocky Terrestrial · G-type yellow (Sun-like)
Radius 0.82 R⊕ · 921.6 ly
Kepler-314 b
Rocky Terrestrial · G-type yellow (Sun-like)
Radius 0.83 R⊕ · 877.0 ly
Kepler-1611 b
Rocky Terrestrial · G-type yellow (Sun-like)
Radius 0.81 R⊕ · 2,962.9 ly
Kepler-1412 b
Rocky Terrestrial · G-type yellow (Sun-like)
Radius 0.83 R⊕ · 2,464.7 ly