Key parameters at a glance
- A radius of 1.47 Earth radii
- A mass of 2.77 Earth masses
- Surface gravity around 1.28 g
- An orbital period of 2.356 days
- Semi-major axis 0.0319 AU
- Equilibrium temperature 1,093 K (820 °C)
- Earth Similarity Index 0.273
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1756 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#801of 1176
top 68.0%
This planet
1.47R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1756 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.47 | 11.21 |
| Mass (M⊕) | 1.00 | 2.77 | 317.83 |
| Density (g/cm³) | 5.51 | 4.77 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.28 | 2.53 |
| Insolation (S⊕) | 1.00 | 338.40 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 377910183
Gaia DR2
Gaia DR2 2076572092984362880
Gaia DR3
Gaia DR3 2076572092984362880
System
Kepler-1756
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.36 Earth days (0.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0319 AU.
Transit Fingerprint
Depth
0.027 %
Duration
1.759 h
Impact parameter b
0.200
Rp / R★
0.015115
Transit midpoint (BJD)
2,455,010.8900
Photometric dip
Transit produces a flux drop of 267 ppm lasting ≈ 1.76 h.
Extended Orbital Architecture
Planet / star radius ratio
0.015115
Semi-major axis / stellar radius
10.210
Impact parameter (b)
0.200
Transit mid-time (BJD)
2,455,010.8900
Eq. Temperature
1,093K
(820 °C)
Insolation (S⊕)
338.40
Earth = 1.00
Earth Similarity (ESI)
0.273
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-1756
Spectral Class
K-type orange
Effective Temperature
4,915 K — cooler than the Sun (5,778 K)
Estimated Age
13.70 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.812 R☉
Stellar Mass
0.781 M☉
Metallicity [Fe/H]
0.16
Extended Stellar Properties
Surface gravity (log g)
4.512 dex
Stellar density
2.387 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Total Proper Motion
6.899 mas/yr
PM Right Ascension
6.82 mas/yr
PM Declination
1.03 mas/yr
Galactic Cartesian (pc)
x = 0.313 · y = -0.690 · z = 0.652
Equatorial (J2000)
RA 294.36490° · Dec 40.72089°
Galactic ℓ, b
74.105° · 9.377°
Ecliptic λ, β
309.898° · 60.829°
HTM-20 index
1523706395
Similar Worlds
Kepler-137 b
Super-Earth · K-type orange
Radius 1.47 R⊕ · 988.2 ly
Kepler-777 b
Super-Earth · K-type orange
Radius 1.47 R⊕ · 1,445.2 ly
Kepler-1826 b
Super-Earth · K-type orange
Radius 1.48 R⊕ · 1,099.0 ly
Kepler-975 b
Super-Earth · K-type orange
Radius 1.48 R⊕ · 1,389.7 ly
TOI-1798.02
Super-Earth · K-type orange
Radius 1.46 R⊕ · 369.1 ly
EPIC 212297394 b
Super-Earth · K-type orange
Radius 1.48 R⊕ · 1,364.6 ly