Key parameters at a glance
- A radius of 1.55 Earth radii
- A mass of 3.02 Earth masses
- Surface gravity around 1.26 g
- An orbital period of 9.991 days
- Semi-major axis 0.0833 AU
- Equilibrium temperature 660 K (387 °C)
- Distance from Earth 2,031.36 light-years
- Earth Similarity Index 0.453
- Travel time at Voyager 1 speed 35,823,001 years
- Almost certainly tidally locked to its host star given the close orbit
2 siblings around Kepler-1254
Kepler-1254 b shares its host star with 2 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-1254 c | Super-Earth | 1.30 | 2.24 | 3.601 | 927 | 2016 |
| Kepler-1254 d | Super-Earth | 1.31 | 2.27 | 5.727 | 794 | 2016 |
| Kepler-1254 b this | Super-Earth | 1.55 | 3.02 | 9.991 | 660 | 2016 |
Kepler-1254 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#652of 1176
top 55.4%
This planet
1.55R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1254 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.55 | 11.21 |
| Mass (M⊕) | 1.00 | 3.02 | 317.83 |
| Density (g/cm³) | 5.51 | 4.46 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.26 | 2.53 |
| Insolation (S⊕) | 1.00 | 33.98 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 48506710
Gaia DR2
Gaia DR2 2131968065762170624
Gaia DR3
Gaia DR3 2131968065762170624
System
Kepler-1254
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 9.99 Earth days (2.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0833 AU.
Transit Fingerprint
Depth
0.039 %
Duration
2.645 h
Impact parameter b
0.195
Rp / R★
0.018642
Transit midpoint (BJD)
2,454,967.3929
Photometric dip
Transit produces a flux drop of 392 ppm lasting ≈ 2.65 h.
Extended Orbital Architecture
Planet / star radius ratio
0.018642
Semi-major axis / stellar radius
28.860
Impact parameter (b)
0.195
Transit mid-time (BJD)
2,454,967.3929
Angular separation (arcsec)
0.13400
Eq. Temperature
660K
(387 °C)
Insolation (S⊕)
33.98
Earth = 1.00
Earth Similarity (ESI)
0.453
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-1254
Spectral Class
K-type orange
Effective Temperature
4,985 K — cooler than the Sun (5,778 K)
Estimated Age
5.62 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.750 R☉
Stellar Mass
0.780 M☉
Metallicity [Fe/H]
-0.10
Extended Stellar Properties
Surface gravity (log g)
4.590 dex
Stellar density
3.322 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.577 mas
Total Proper Motion
1.809 mas/yr
PM Right Ascension
-0.82 mas/yr
PM Declination
-1.61 mas/yr
Galactic Cartesian (pc)
x = 0.173 · y = -0.636 · z = 0.752
Equatorial (J2000)
RA 285.17332° · Dec 48.77001°
Galactic ℓ, b
78.912° · 18.618°
Ecliptic λ, β
301.230° · 70.568°
HTM-20 index
-164182991
Similar Worlds
Kepler-1064 b
Super-Earth · K-type orange
Radius 1.55 R⊕ · 1,219.8 ly
Kepler-55 e
Super-Earth · K-type orange
Radius 1.55 R⊕ · 1,887.8 ly
Kepler-1899 b
Super-Earth · K-type orange
Radius 1.55 R⊕ · 2,320.6 ly
K2-165 c
Super-Earth · K-type orange
Radius 1.55 R⊕ · 439.0 ly
Kepler-1805 b
Super-Earth · K-type orange
Radius 1.55 R⊕ · 722.9 ly
TOI-238 b
Super-Earth · K-type orange
Radius 1.56 R⊕ · 262.7 ly