Key parameters at a glance
- A radius of 2.08 Earth radii
- A mass of 4.98 Earth masses
- Surface gravity around 1.15 g
- An orbital period of 8.496 days
- Semi-major axis 0.0726 AU
- Equilibrium temperature 702 K (429 °C)
- Distance from Earth 2,995.96 light-years
- Earth Similarity Index 0.387
- Travel time at Voyager 1 speed 52,833,719 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1195 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1846of 1978
top 93.3%
This planet
2.08R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-1195 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.08 | 11.21 |
| Mass (M⊕) | 1.00 | 4.98 | 317.83 |
| Density (g/cm³) | 5.51 | 3.04 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.15 | 2.53 |
| Insolation (S⊕) | 1.00 | 79.03 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 120252007
Gaia DR2
Gaia DR2 2103644611871388032
Gaia DR3
Gaia DR3 2103644611871388032
System
Kepler-1195
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 8.50 Earth days (2.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0726 AU.
Transit Fingerprint
Depth
0.083 %
Duration
2.237 h
Impact parameter b
0.026
Rp / R★
0.027229
Transit midpoint (BJD)
2,454,971.7352
Photometric dip
Transit produces a flux drop of 834 ppm lasting ≈ 2.24 h.
Extended Orbital Architecture
Planet / star radius ratio
0.027229
Semi-major axis / stellar radius
29.800
Impact parameter (b)
0.026
Transit mid-time (BJD)
2,454,971.7352
Angular separation (arcsec)
0.07900
Eq. Temperature
702K
(429 °C)
Insolation (S⊕)
79.03
Earth = 1.00
Earth Similarity (ESI)
0.387
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.
Discovery Paper
Primary reference
Morton et al. 2016Instrument
Kepler CCD Array
Publication
2016-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2016 at Kepler (12 shown).
Host System: Kepler-1195
Spectral Class
K-type orange
Effective Temperature
4,965 K — cooler than the Sun (5,778 K)
Estimated Age
4.47 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.710 R☉
Stellar Mass
0.740 M☉
Metallicity [Fe/H]
-0.25
Extended Stellar Properties
Surface gravity (log g)
4.610 dex
Stellar density
6.934 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
1.061 mas
Total Proper Motion
14.025 mas/yr
PM Right Ascension
-9.29 mas/yr
PM Declination
-10.50 mas/yr
Galactic Cartesian (pc)
x = 0.187 · y = -0.733 · z = 0.654
Equatorial (J2000)
RA 284.35105° · Dec 40.85293°
Galactic ℓ, b
70.950° · 16.305°
Ecliptic λ, β
294.457° · 63.079°
HTM-20 index
1879142086
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