Key parameters at a glance
- A radius of 1.73 Earth radii
- A mass of 3.66 Earth masses
- Surface gravity around 1.22 g
- An orbital period of 1.302 days
- Semi-major axis 0.0215 AU
- Equilibrium temperature 1,344 K (1071 °C)
- Distance from Earth 2,768.28 light-years
- Earth Similarity Index 0.205
- Travel time at Voyager 1 speed 48,818,644 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1856 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#353of 1176
top 29.9%
This planet
1.73R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1856 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.73 | 11.21 |
| Mass (M⊕) | 1.00 | 3.66 | 317.83 |
| Density (g/cm³) | 5.51 | 3.85 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.22 | 2.53 |
| Insolation (S⊕) | 1.00 | 772.73 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 27687265
Gaia DR2
Gaia DR2 2135692661402242176
Gaia DR3
Gaia DR3 2135692661402242176
System
Kepler-1856
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 1.30 Earth days (0.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0215 AU.
Transit Fingerprint
Depth
0.029 %
Duration
1.380 h
Impact parameter b
0.079
Rp / R★
0.016532
Transit midpoint (BJD)
2,454,964.9362
Photometric dip
Transit produces a flux drop of 291 ppm lasting ≈ 1.38 h.
Extended Orbital Architecture
Planet / star radius ratio
0.016532
Semi-major axis / stellar radius
7.327
Impact parameter (b)
0.079
Transit mid-time (BJD)
2,454,964.9362
Angular separation (arcsec)
0.02530
Eq. Temperature
1,344K
(1071 °C)
Insolation (S⊕)
772.73
Earth = 1.00
Earth Similarity (ESI)
0.205
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
Valizadegan et al. 2022Instrument
Kepler CCD Array
Publication
2022-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2021 at Kepler (12 shown).
Host System: Kepler-1856
Spectral Class
K-type orange
Effective Temperature
4,948 K — cooler than the Sun (5,778 K)
Estimated Age
10.90 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.816 R☉
Stellar Mass
0.782 M☉
Metallicity [Fe/H]
0.14
Extended Stellar Properties
Surface gravity (log g)
4.508 dex
Stellar density
4.004 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.150 mas
Total Proper Motion
13.876 mas/yr
PM Right Ascension
-3.44 mas/yr
PM Declination
-13.44 mas/yr
Galactic Cartesian (pc)
x = 0.273 · y = -0.562 · z = 0.781
Equatorial (J2000)
RA 295.90917° · Dec 51.34788°
Galactic ℓ, b
84.227° · 13.332°
Ecliptic λ, β
323.110° · 70.049°
HTM-20 index
-709360158
Similar Worlds
Kepler-1059 b
Super-Earth · K-type orange
Radius 1.73 R⊕ · 2,326.0 ly
K2-148 c
Super-Earth · K-type orange
Radius 1.73 R⊕ · 405.9 ly
K2-199 b
Super-Earth · K-type orange
Radius 1.73 R⊕ · 350.7 ly
Kepler-327 d
Super-Earth · K-type orange
Radius 1.73 R⊕ · 789.3 ly
Kepler-1608 b
Super-Earth · K-type orange
Radius 1.73 R⊕ · 2,713.6 ly
Kepler-1350 c
Super-Earth · K-type orange
Radius 1.73 R⊕ · 1,111.2 ly