Key parameters at a glance
- A radius of 1.57 Earth radii
- A mass of 3.09 Earth masses
- Surface gravity around 1.25 g
- An orbital period of 4.893 days
- Semi-major axis 0.0621 AU
- Equilibrium temperature 1,374 K (1101 °C)
- Distance from Earth 3,060.70 light-years
- Earth Similarity Index 0.206
- Travel time at Voyager 1 speed 53,975,501 years
1 sibling around Kepler-1181
Kepler-1181 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-1181 b this | Super-Earth | 1.57 | 3.09 | 4.893 | 1,374 | 2016 |
| Kepler-1181 c | Super-Earth | 1.83 | 4.01 | 8.935 | 1,124 | 2023 |
Kepler-1181 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#618of 1176
top 52.5%
This planet
1.57R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1181 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.57 | 11.21 |
| Mass (M⊕) | 1.00 | 3.09 | 317.83 |
| Density (g/cm³) | 5.51 | 4.39 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.25 | 2.53 |
| Insolation (S⊕) | 1.00 | 831.14 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 394176812
Gaia DR2
Gaia DR2 2101035367703145088
Gaia DR3
Gaia DR3 2101035367703145088
System
Kepler-1181
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.89 Earth days (1.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0621 AU.
Transit Fingerprint
Depth
0.014 %
Duration
3.316 h
Impact parameter b
0.218
Rp / R★
0.010879
Transit midpoint (BJD)
2,454,966.6433
Photometric dip
Transit produces a flux drop of 138 ppm lasting ≈ 3.32 h.
Extended Orbital Architecture
Planet / star radius ratio
0.010879
Semi-major axis / stellar radius
11.360
Impact parameter (b)
0.218
Transit mid-time (BJD)
2,454,966.6433
Angular separation (arcsec)
0.06620
Eq. Temperature
1,374K
(1101 °C)
Insolation (S⊕)
831.14
Earth = 1.00
Earth Similarity (ESI)
0.206
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
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-1181
Spectral Class
F-type yellow-white
Effective Temperature
6,176 K — hotter than the Sun (5,778 K)
Estimated Age
3.24 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.300 R☉
Stellar Mass
1.170 M☉
Metallicity [Fe/H]
0.03
Extended Stellar Properties
Surface gravity (log g)
4.270 dex
Stellar density
1.158 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 15 bands
Astrometric Data
Parallax
1.037 mas
Total Proper Motion
8.542 mas/yr
PM Right Ascension
0.76 mas/yr
PM Declination
-8.51 mas/yr
Galactic Cartesian (pc)
x = 0.261 · y = -0.726 · z = 0.636
Equatorial (J2000)
RA 289.74732° · Dec 39.52341°
Galactic ℓ, b
71.405° · 11.997°
Ecliptic λ, β
302.253° · 60.770°
HTM-20 index
-894083530
Similar Worlds
Kepler-323 c
Super-Earth · F-type yellow-white
Radius 1.57 R⊕ · 1,483.6 ly
K2-269 b
Super-Earth · F-type yellow-white
Radius 1.57 R⊕ · 1,176.6 ly
Kepler-356 b
Super-Earth · F-type yellow-white
Radius 1.57 R⊕ · 2,307.7 ly
Kepler-1072 b
Super-Earth · F-type yellow-white
Radius 1.58 R⊕ · 3,205.2 ly
Kepler-402 c
Super-Earth · F-type yellow-white
Radius 1.56 R⊕ · 2,039.6 ly
Kepler-126 c
Super-Earth · F-type yellow-white
Radius 1.58 R⊕ · 774.3 ly