Key parameters at a glance
- A radius of 2.53 Earth radii
- A mass of 10.80 Earth masses
- Surface gravity around 1.69 g
- An orbital period of 5.412 days
- Semi-major axis 0.0602 AU
- Equilibrium temperature 1,418 K (1145 °C)
- Distance from Earth 1,497.78 light-years
- Earth Similarity Index 0.177
- Travel time at Voyager 1 speed 26,413,408 years
1 sibling around Kepler-105
Kepler-105 b 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-105 b this | Sub-Neptune | 2.53 | 10.80 | 5.412 | 1,418 | 2013 |
| Kepler-105 c | Super-Earth | 1.44 | 5.60 | 7.126 | 997 | 2014 |
Kepler-105 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1133of 1978
top 57.2%
This planet
2.53R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-105 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.53 | 11.21 |
| Mass (M⊕) | 1.00 | 10.80 | 317.83 |
| Density (g/cm³) | 5.51 | 3.68 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.69 | 2.53 |
| Insolation (S⊕) | 1.00 | 341.81 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 10.800 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 158625964
Gaia DR2
Gaia DR2 2130368310704421120
Gaia DR3
Gaia DR3 2130368310704421120
System
Kepler-105
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.41 Earth days (1.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0602 AU.
Transit Fingerprint
Depth
0.060 %
Duration
2.947 h
Impact parameter b
0.438
Rp / R★
0.022920
Transit midpoint (BJD)
2,454,955.3186
Photometric dip
Transit produces a flux drop of 598 ppm lasting ≈ 2.95 h.
Extended Orbital Architecture
Planet / star radius ratio
0.022920
Semi-major axis / stellar radius
9.650
Impact parameter (b)
0.438
Transit mid-time (BJD)
2,454,955.3186
Long. of periastron (ω)
225.00°
Angular separation (arcsec)
0.13100
Eq. Temperature
1,418K
(1145 °C)
Insolation (S⊕)
341.81
Earth = 1.00
Earth Similarity (ESI)
0.177
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
Discovery Paper
Primary reference
Wang et al. 2014Instrument
Kepler CCD Array
Publication
2014-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2013 at Kepler (12 shown).
Host System: Kepler-105
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,933 K — hotter than the Sun (5,778 K)
Estimated Age
4.27 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.026 R☉
Stellar Mass
0.991 M☉
Metallicity [Fe/H]
-0.09
Extended Stellar Properties
Surface gravity (log g)
4.432 dex
Stellar density
0.920 g/cm³
Systemic radial velocity
1.97 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.149 mas
Total Proper Motion
24.209 mas/yr
PM Right Ascension
-9.64 mas/yr
PM Declination
-22.21 mas/yr
Galactic Cartesian (pc)
x = 0.212 · y = -0.658 · z = 0.723
Equatorial (J2000)
RA 287.88724° · Dec 46.27612°
Galactic ℓ, b
77.185° · 15.999°
Ecliptic λ, β
303.887° · 67.622°
HTM-20 index
-1740157814
Similar Worlds
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Kepler-896 b
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Kepler-727 b
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TOI-1136 g
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Kepler-153 c
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Kepler-313 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.53 R⊕ · 3,520.5 ly