Key parameters at a glance
- A radius of 1.25 Earth radii
- A mass of 2.10 Earth masses
- Surface gravity around 1.34 g
- An orbital period of 2.032 days
- Semi-major axis 0.0287 AU
- Equilibrium temperature 1,011 K (738 °C)
- Distance from Earth 1,588.18 light-years
- Earth Similarity Index 0.306
- Travel time at Voyager 1 speed 28,007,624 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1197 b 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-1197 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.25 | 11.21 |
| Mass (M⊕) | 1.00 | 2.10 | 317.83 |
| Density (g/cm³) | 5.51 | 5.91 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.34 | 2.53 |
| Insolation (S⊕) | 1.00 | 267.14 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 63004645
Gaia DR2
Gaia DR2 2125790322246812672
Gaia DR3
Gaia DR3 2125790322246812672
System
Kepler-1197
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.03 Earth days (0.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0287 AU.
Transit Fingerprint
Depth
0.031 %
Duration
1.121 h
Impact parameter b
0.009
Rp / R★
0.016468
Transit midpoint (BJD)
2,454,965.6437
Photometric dip
Transit produces a flux drop of 308 ppm lasting ≈ 1.12 h.
Extended Orbital Architecture
Planet / star radius ratio
0.016468
Semi-major axis / stellar radius
9.000
Impact parameter (b)
0.009
Transit mid-time (BJD)
2,454,965.6437
Angular separation (arcsec)
0.05890
Eq. Temperature
1,011K
(738 °C)
Insolation (S⊕)
267.14
Earth = 1.00
Earth Similarity (ESI)
0.306
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched. 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-1197
Spectral Class
K-type orange
Effective Temperature
4,708 K — cooler than the Sun (5,778 K)
Estimated Age
2.69 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.720 R☉
Stellar Mass
0.780 M☉
Metallicity [Fe/H]
0.06
Extended Stellar Properties
Surface gravity (log g)
4.620 dex
Stellar density
2.190 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.025 mas
Total Proper Motion
8.947 mas/yr
PM Right Ascension
6.78 mas/yr
PM Declination
5.83 mas/yr
Galactic Cartesian (pc)
x = 0.272 · y = -0.684 · z = 0.677
Equatorial (J2000)
RA 291.66934° · Dec 42.59074°
Galactic ℓ, b
74.873° · 12.019°
Ecliptic λ, β
307.167° · 63.261°
HTM-20 index
-389588817
Similar Worlds
Kepler-1074 b
Super-Earth · K-type orange
Radius 1.25 R⊕ · 818.1 ly
K2-130 b
Super-Earth · K-type orange
Radius 1.25 R⊕ · 384.9 ly
Kepler-169 d
Super-Earth · K-type orange
Radius 1.25 R⊕ · 1,325.9 ly
Kepler-1363 b
Super-Earth · K-type orange
Radius 1.25 R⊕ · 1,766.8 ly
Kepler-1697 b
Super-Earth · K-type orange
Radius 1.26 R⊕ · 808.1 ly
Kepler-755 c
Super-Earth · K-type orange
Radius 1.26 R⊕ · 1,301.5 ly