Key parameters at a glance
- A radius of 1.48 Earth radii
- A mass of 2.78 Earth masses
- Surface gravity around 1.28 g
- An orbital period of 1.615 days
- Semi-major axis 0.0213 AU
- Equilibrium temperature 806 K (533 °C)
- Distance from Earth 1,098.99 light-years
- Earth Similarity Index 0.377
- Travel time at Voyager 1 speed 19,380,673 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1826 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#798of 1176
top 67.8%
This planet
1.48R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1826 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.48 | 11.21 |
| Mass (M⊕) | 1.00 | 2.78 | 317.83 |
| Density (g/cm³) | 5.51 | 4.76 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.28 | 2.53 |
| Insolation (S⊕) | 1.00 | 99.32 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 26749051
Gaia DR2
Gaia DR2 2129686991453013248
Gaia DR3
Gaia DR3 2129686991453013248
System
Kepler-1826
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 1.62 Earth days (0.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0213 AU.
Transit Fingerprint
Depth
0.050 %
Duration
1.144 h
Impact parameter b
0.931
Rp / R★
0.025766
Transit midpoint (BJD)
2,454,965.7846
Photometric dip
Transit produces a flux drop of 500 ppm lasting ≈ 1.14 h.
Extended Orbital Architecture
Planet / star radius ratio
0.025766
Semi-major axis / stellar radius
4.750
Impact parameter (b)
0.931
Transit mid-time (BJD)
2,454,965.7846
Angular separation (arcsec)
0.06320
Eq. Temperature
806K
(533 °C)
Insolation (S⊕)
99.32
Earth = 1.00
Earth Similarity (ESI)
0.377
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
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-1826
Spectral Class
K-type orange
Effective Temperature
3,821 K — cooler than the Sun (5,778 K)
Estimated Age
5.62 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.486 R☉
Stellar Mass
0.490 M☉
Metallicity [Fe/H]
-0.28
Extended Stellar Properties
Surface gravity (log g)
4.755 dex
Stellar density
0.775 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.939 mas
Total Proper Motion
49.920 mas/yr
PM Right Ascension
12.20 mas/yr
PM Declination
48.41 mas/yr
Galactic Cartesian (pc)
x = 0.254 · y = -0.606 · z = 0.754
Equatorial (J2000)
RA 292.77001° · Dec 48.89985°
Galactic ℓ, b
81.053° · 14.059°
Ecliptic λ, β
314.777° · 68.826°
HTM-20 index
571395507
Similar Worlds
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Super-Earth · K-type orange
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Super-Earth · K-type orange
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EPIC 212297394 b
Super-Earth · K-type orange
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Kepler-99 b
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Radius 1.47 R⊕ · 1,445.2 ly