Key parameters at a glance
- A radius of 1.84 Earth radii
- A mass of 4.04 Earth masses
- Surface gravity around 1.19 g
- An orbital period of 8.182 days
- Semi-major axis 0.0759 AU
- Equilibrium temperature 981 K (708 °C)
- Distance from Earth 2,634.85 light-years
- Earth Similarity Index 0.285
- Travel time at Voyager 1 speed 46,465,599 years
1 sibling around Kepler-825
Kepler-825 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-825 b | Super-Earth | 1.53 | 2.96 | 3.774 | 1,270 | 2016 |
| Kepler-825 c this | Super-Earth | 1.84 | 4.04 | 8.182 | 981 | 2016 |
Kepler-825 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#201of 1176
top 17.0%
This planet
1.84R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-825 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.84 | 11.21 |
| Mass (M⊕) | 1.00 | 4.04 | 317.83 |
| Density (g/cm³) | 5.51 | 3.56 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.19 | 2.53 |
| Insolation (S⊕) | 1.00 | 261.63 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 378086008
Gaia DR2
Gaia DR2 2076249351963553152
Gaia DR3
Gaia DR3 2076249351963553152
System
Kepler-825
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 8.18 Earth days (2.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0759 AU.
Transit Fingerprint
Depth
0.030 %
Duration
2.460 h
Impact parameter b
0.787
Rp / R★
0.016141
Transit midpoint (BJD)
2,454,967.8148
Photometric dip
Transit produces a flux drop of 300 ppm lasting ≈ 2.46 h.
Extended Orbital Architecture
Planet / star radius ratio
0.016141
Semi-major axis / stellar radius
25.740
Impact parameter (b)
0.787
Transit mid-time (BJD)
2,454,967.8148
Angular separation (arcsec)
0.09400
Eq. Temperature
981K
(708 °C)
Insolation (S⊕)
261.63
Earth = 1.00
Earth Similarity (ESI)
0.285
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
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-825
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,976 K — hotter than the Sun (5,778 K)
Estimated Age
3.55 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.080 R☉
Stellar Mass
1.030 M☉
Metallicity [Fe/H]
-0.08
Extended Stellar Properties
Surface gravity (log g)
4.390 dex
Stellar density
1.633 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.209 mas
Total Proper Motion
24.741 mas/yr
PM Right Ascension
-12.12 mas/yr
PM Declination
-21.57 mas/yr
Galactic Cartesian (pc)
x = 0.324 · y = -0.702 · z = 0.635
Equatorial (J2000)
RA 294.76983° · Dec 39.39841°
Galactic ℓ, b
73.072° · 8.481°
Ecliptic λ, β
309.602° · 59.478°
HTM-20 index
-1954192945
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