Key parameters at a glance
- A radius of 2.03 Earth radii
- A mass of 4.78 Earth masses
- Surface gravity around 1.16 g
- An orbital period of 8.308 days
- Semi-major axis 0.0770 AU
- Equilibrium temperature 751 K (478 °C)
- Distance from Earth 2,126.70 light-years
- Earth Similarity Index 0.365
- Travel time at Voyager 1 speed 37,504,413 years
1 sibling around Kepler-195
Kepler-195 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-195 b this | Sub-Neptune | 2.03 | 4.78 | 8.308 | 751 | 2014 |
| Kepler-195 c | Super-Earth | 1.55 | 3.02 | 34.097 | 469 | 2014 |
Kepler-195 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1915of 1978
top 96.8%
This planet
2.03R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-195 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.03 | 11.21 |
| Mass (M⊕) | 1.00 | 4.78 | 317.83 |
| Density (g/cm³) | 5.51 | 3.14 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.16 | 2.53 |
| Insolation (S⊕) | 1.00 | 74.15 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 298837729
Gaia DR2
Gaia DR2 2130982113070876160
Gaia DR3
Gaia DR3 2130982113070876160
System
Kepler-195
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 8.31 Earth days (2.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0770 AU.
Transit Fingerprint
Depth
0.082 %
Duration
3.150 h
Impact parameter b
0.050
Rp / R★
0.025018
Transit midpoint (BJD)
2,455,004.1712
Photometric dip
Transit produces a flux drop of 824 ppm lasting ≈ 3.15 h.
Extended Orbital Architecture
Planet / star radius ratio
0.025018
Semi-major axis / stellar radius
20.647
Impact parameter (b)
0.050
Transit mid-time (BJD)
2,455,004.1712
Angular separation (arcsec)
0.11800
Eq. Temperature
751K
(478 °C)
Insolation (S⊕)
74.15
Earth = 1.00
Earth Similarity (ESI)
0.365
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Transit timing variations
Gravitational interactions from neighbours have been detected.
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-195
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,329 K — cooler than the Sun (5,778 K)
Estimated Age
2.19 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.775 R☉
Stellar Mass
0.867 M☉
Metallicity [Fe/H]
0.04
Extended Stellar Properties
Surface gravity (log g)
4.603 dex
Stellar density
1.700 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 12 bands
Astrometric Data
Parallax
1.505 mas
Total Proper Motion
17.479 mas/yr
PM Right Ascension
1.90 mas/yr
PM Declination
-17.37 mas/yr
Galactic Cartesian (pc)
x = 0.208 · y = -0.636 · z = 0.743
Equatorial (J2000)
RA 288.12093° · Dec 47.96661°
Galactic ℓ, b
78.874° · 16.501°
Ecliptic λ, β
305.829° · 69.162°
HTM-20 index
-789195400
Similar Worlds
GJ 2030 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.03 R⊕ · 120.9 ly
K2-229 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.03 R⊕ · 334.5 ly
Kepler-761 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.03 R⊕ · 2,709.4 ly
K2-84 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.03 R⊕ · 929.1 ly
K2-342 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.03 R⊕ · 679.6 ly
Kepler-1268 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.03 R⊕ · 6,003.8 ly