Key parameters at a glance
- A radius of 1.42 Earth radii
- A mass of 2.61 Earth masses
- Surface gravity around 1.29 g
- An orbital period of 1.026 days
- Semi-major axis 0.0187 AU
- Equilibrium temperature 1,520 K (1247 °C)
- Distance from Earth 1,403.30 light-years
- Earth Similarity Index 0.189
- Travel time at Voyager 1 speed 24,747,181 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1825 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#881of 1176
top 74.8%
This planet
1.42R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1825 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.42 | 11.21 |
| Mass (M⊕) | 1.00 | 2.61 | 317.83 |
| Density (g/cm³) | 5.51 | 4.99 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.29 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,264.70 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 63282889
Gaia DR2
Gaia DR2 2125760772871583744
Gaia DR3
Gaia DR3 2125760772871583744
System
Kepler-1825
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 1.03 Earth days (0.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0187 AU.
Transit Fingerprint
Depth
0.027 %
Duration
0.807 h
Impact parameter b
0.039
Rp / R★
0.015592
Transit midpoint (BJD)
2,454,964.6555
Photometric dip
Transit produces a flux drop of 271 ppm lasting ≈ 0.81 h.
Extended Orbital Architecture
Planet / star radius ratio
0.015592
Semi-major axis / stellar radius
10.012
Impact parameter (b)
0.039
Transit mid-time (BJD)
2,454,964.6555
Angular separation (arcsec)
0.04350
Eq. Temperature
1,520K
(1247 °C)
Insolation (S⊕)
1,264.70
Earth = 1.00
Earth Similarity (ESI)
0.189
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-1825
Spectral Class
K-type orange
Effective Temperature
5,123 K — cooler than the Sun (5,778 K)
Estimated Age
14.00 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.847 R☉
Stellar Mass
0.828 M☉
Metallicity [Fe/H]
0.14
Extended Stellar Properties
Surface gravity (log g)
4.501 dex
Stellar density
4.739 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.295 mas
Total Proper Motion
15.645 mas/yr
PM Right Ascension
15.63 mas/yr
PM Declination
-0.78 mas/yr
Galactic Cartesian (pc)
x = 0.282 · y = -0.679 · z = 0.678
Equatorial (J2000)
RA 292.51406° · Dec 42.65176°
Galactic ℓ, b
75.210° · 11.488°
Ecliptic λ, β
308.512° · 63.112°
HTM-20 index
-246435871
Similar Worlds
Kepler-763 c
Super-Earth · K-type orange
Radius 1.42 R⊕ · 3,139.1 ly
K2-128 b
Super-Earth · K-type orange
Radius 1.42 R⊕ · 373.9 ly
Kepler-1075 b
Super-Earth · K-type orange
Radius 1.42 R⊕ · 950.0 ly
TOI-286 b
Super-Earth · K-type orange
Radius 1.42 R⊕ · 193.2 ly
Kepler-1038 c
Super-Earth · K-type orange
Radius 1.42 R⊕ · 1,905.2 ly
K2-36 b
Super-Earth · K-type orange
Radius 1.43 R⊕ · 358.0 ly