Key parameters at a glance
- A radius of 1.71 Earth radii
- A mass of 3.57 Earth masses
- Surface gravity around 1.22 g
- An orbital period of 242.461 days
- Semi-major axis 0.6400 AU
- Equilibrium temperature 299 K (26 °C)
- Distance from Earth 2,382.98 light-years
- Earth Similarity Index 0.857
- Travel time at Voyager 1 speed 42,023,802 years
Context from the literature
Kepler-69c is a confirmed super-Earth exoplanet, likely rocky, orbiting the Sun-like star Kepler-69, the outermore of two such planets discovered by NASA's Kepler spacecraft. It is located about 2,430 light-years from Earth.
Excerpted from Wikipedia · full article
1 sibling around Kepler-69
Kepler-69 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-69 b | Sub-Neptune | 2.24 | 5.65 | 13.722 | 779 | 2013 |
| Kepler-69 c this | Super-Earth | 1.71 | 3.57 | 242.461 | 299 | 2013 |
Kepler-69 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#385of 1176
top 32.7%
This planet
1.71R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-69 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.71 | 11.21 |
| Mass (M⊕) | 1.00 | 3.57 | 317.83 |
| Density (g/cm³) | 5.51 | 3.92 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.22 | 2.53 |
| Insolation (S⊕) | 1.00 | 2.69 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 275573429
Gaia DR2
Gaia DR2 2126436800722944000
Gaia DR3
Gaia DR3 2126436800722944000
System
Kepler-69
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 242.46 Earth days (66.4% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.6400 AU.
Transit Fingerprint
Depth
0.035 %
Duration
13.100 h
Impact parameter b
0.120
Rp / R★
0.016800
Transit midpoint (BJD)
2,454,983.8700
Photometric dip
Transit produces a flux drop of 350 ppm lasting ≈ 13.10 h.
Extended Orbital Architecture
Planet / star radius ratio
0.016800
Semi-major axis / stellar radius
148.000
Impact parameter (b)
0.120
Transit mid-time (BJD)
2,454,983.8700
Angular separation (arcsec)
0.87600
Eq. Temperature
299K
(26 °C)
Insolation (S⊕)
2.69
Earth = 1.00
Earth Similarity (ESI)
0.857
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — liquid water is physically possible with adequate atmospheric pressure.
Discovery Paper
Primary reference
Barclay et al. 2013Instrument
Kepler CCD Array
Publication
2013-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2013 at Kepler (12 shown).
Host System: Kepler-69
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,638 K — cooler than the Sun (5,778 K)
Estimated Age
13.18 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.930 R☉
Stellar Mass
0.810 M☉
Metallicity [Fe/H]
-0.29
Extended Stellar Properties
Surface gravity (log g)
4.400 dex
Stellar density
1.370 g/cm³
Systemic radial velocity
-38.70 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.340 mas
Total Proper Motion
11.796 mas/yr
PM Right Ascension
-9.70 mas/yr
PM Declination
-6.71 mas/yr
Galactic Cartesian (pc)
x = 0.280 · y = -0.651 · z = 0.705
Equatorial (J2000)
RA 293.26090° · Dec 44.86887°
Galactic ℓ, b
77.482° · 11.994°
Ecliptic λ, β
311.460° · 64.995°
HTM-20 index
-1824808970
Similar Worlds
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Super-Earth · G-type yellow (Sun-like)
Radius 1.71 R⊕ · 592.8 ly
Kepler-1046 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.71 R⊕ · 2,353.3 ly
Kepler-414 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.71 R⊕ · 1,348.5 ly
Kepler-221 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.71 R⊕ · 1,256.5 ly
Kepler-60 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.71 R⊕ · 3,343.4 ly
Kepler-1336 c
Super-Earth · G-type yellow (Sun-like)
Radius 1.71 R⊕ · 3,674.6 ly