Key parameters at a glance
- A radius of 1.67 Earth radii
- A mass of 3.43 Earth masses
- Surface gravity around 1.23 g
- An orbital period of 2.889 days
- Semi-major axis 0.0371 AU
- Equilibrium temperature 976 K (703 °C)
- Distance from Earth 1,810.78 light-years
- Earth Similarity Index 0.296
- Travel time at Voyager 1 speed 31,933,143 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around Kepler-1143
Kepler-1143 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-1143 b this | Super-Earth | 1.67 | 3.43 | 2.889 | 976 | 2016 |
| Kepler-1143 c | Sub-Neptune | 3.60 | 12.60 | 210.631 | 234 | 2016 |
Kepler-1143 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#452of 1176
top 38.4%
This planet
1.67R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1143 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.67 | 11.21 |
| Mass (M⊕) | 1.00 | 3.43 | 317.83 |
| Density (g/cm³) | 5.51 | 4.05 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.23 | 2.53 |
| Insolation (S⊕) | 1.00 | 173.06 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 121215172
Gaia DR2
Gaia DR2 2100405381897402496
Gaia DR3
Gaia DR3 2100405381897402496
System
Kepler-1143
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.89 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0371 AU.
Transit Fingerprint
Depth
0.040 %
Duration
1.554 h
Impact parameter b
0.206
Rp / R★
0.019745
Transit midpoint (BJD)
2,454,965.1528
Photometric dip
Transit produces a flux drop of 402 ppm lasting ≈ 1.55 h.
Extended Orbital Architecture
Planet / star radius ratio
0.019745
Semi-major axis / stellar radius
14.200
Impact parameter (b)
0.206
Transit mid-time (BJD)
2,454,965.1528
Angular separation (arcsec)
0.06680
Eq. Temperature
976K
(703 °C)
Insolation (S⊕)
173.06
Earth = 1.00
Earth Similarity (ESI)
0.296
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-1143
Spectral Class
K-type orange
Effective Temperature
5,053 K — cooler than the Sun (5,778 K)
Estimated Age
4.79 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.770 R☉
Stellar Mass
0.810 M☉
Metallicity [Fe/H]
-0.06
Extended Stellar Properties
Surface gravity (log g)
4.580 dex
Stellar density
1.621 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
1.773 mas
Total Proper Motion
11.620 mas/yr
PM Right Ascension
-5.87 mas/yr
PM Declination
-10.03 mas/yr
Galactic Cartesian (pc)
x = 0.230 · y = -0.739 · z = 0.633
Equatorial (J2000)
RA 287.30277° · Dec 39.28964°
Galactic ℓ, b
70.377° · 13.614°
Ecliptic λ, β
298.377° · 61.035°
HTM-20 index
-550963945
Similar Worlds
Kepler-763 d
Super-Earth · K-type orange
Radius 1.67 R⊕ · 3,139.1 ly
Kepler-1480 b
Super-Earth · K-type orange
Radius 1.67 R⊕ · 1,633.7 ly
HD 3167 b
Super-Earth · K-type orange
Radius 1.67 R⊕ · 154.2 ly
Kepler-1802 b
Super-Earth · K-type orange
Radius 1.67 R⊕ · 2,076.6 ly
Kepler-167 c
Super-Earth · K-type orange
Radius 1.67 R⊕ · 1,115.2 ly
TOI-871 b
Super-Earth · K-type orange
Radius 1.66 R⊕ · 221.9 ly