Key parameters at a glance
- A radius of 1.40 Earth radii
- A mass of 2.54 Earth masses
- Surface gravity around 1.30 g
- An orbital period of 3.971 days
- Semi-major axis 0.0443 AU
- Equilibrium temperature 958 K (685 °C)
- Distance from Earth 2,256.87 light-years
- Earth Similarity Index 0.319
- Travel time at Voyager 1 speed 39,799,941 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1145 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#923of 1176
top 78.4%
This planet
1.40R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1145 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.40 | 11.21 |
| Mass (M⊕) | 1.00 | 2.54 | 317.83 |
| Density (g/cm³) | 5.51 | 5.09 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.30 | 2.53 |
| Insolation (S⊕) | 1.00 | 198.43 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 271539239
Gaia DR2
Gaia DR2 2078012796808952832
Gaia DR3
Gaia DR3 2078012796808952832
System
Kepler-1145
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.97 Earth days (1.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0443 AU.
Transit Fingerprint
Depth
0.035 %
Duration
1.814 h
Impact parameter b
0.281
Rp / R★
0.017080
Transit midpoint (BJD)
2,454,967.6389
Photometric dip
Transit produces a flux drop of 349 ppm lasting ≈ 1.81 h.
Extended Orbital Architecture
Planet / star radius ratio
0.017080
Semi-major axis / stellar radius
16.360
Impact parameter (b)
0.281
Transit mid-time (BJD)
2,454,967.6389
Angular separation (arcsec)
0.06400
Eq. Temperature
958K
(685 °C)
Insolation (S⊕)
198.43
Earth = 1.00
Earth Similarity (ESI)
0.319
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-1145
Spectral Class
K-type orange
Effective Temperature
5,064 K — cooler than the Sun (5,778 K)
Estimated Age
4.79 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.750 R☉
Stellar Mass
0.790 M☉
Metallicity [Fe/H]
-0.13
Extended Stellar Properties
Surface gravity (log g)
4.590 dex
Stellar density
5.252 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.417 mas
Total Proper Motion
7.179 mas/yr
PM Right Ascension
4.39 mas/yr
PM Declination
5.68 mas/yr
Galactic Cartesian (pc)
x = 0.312 · y = -0.661 · z = 0.683
Equatorial (J2000)
RA 295.30815° · Dec 43.04440°
Galactic ℓ, b
76.520° · 9.848°
Ecliptic λ, β
313.028° · 62.753°
HTM-20 index
-1379786308
Similar Worlds
Kepler-1301 b
Super-Earth · K-type orange
Radius 1.40 R⊕ · 2,786.3 ly
K2-85 b
Super-Earth · K-type orange
Radius 1.40 R⊕ · 317.1 ly
Kepler-329 b
Super-Earth · K-type orange
Radius 1.40 R⊕ · 1,434.2 ly
Kepler-1229 b
Super-Earth · K-type orange
Radius 1.40 R⊕ · 865.9 ly
Kepler-326 c
Super-Earth · K-type orange
Radius 1.40 R⊕ · 1,590.6 ly
Kepler-716 c
Super-Earth · K-type orange
Radius 1.39 R⊕ · 2,071.1 ly