Key parameters at a glance
- A radius of 1.26 Earth radii
- A mass of 2.12 Earth masses
- Surface gravity around 1.34 g
- An orbital period of 33.497 days
- Semi-major axis 0.2008 AU
- Equilibrium temperature 630 K (357 °C)
- Distance from Earth 808.12 light-years
- Earth Similarity Index 0.497
- Travel time at Voyager 1 speed 14,251,195 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1697 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#1159of 1176
top 98.5%
This planet
1.26R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1697 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.26 | 11.21 |
| Mass (M⊕) | 1.00 | 2.12 | 317.83 |
| Density (g/cm³) | 5.51 | 5.83 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.34 | 2.53 |
| Insolation (S⊕) | 1.00 | 37.30 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 158551360
Gaia DR2
Gaia DR2 2102991776844251264
Gaia DR3
Gaia DR3 2102991776844251264
System
Kepler-1697
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 33.50 Earth days (9.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2008 AU.
Transit Fingerprint
Depth
0.017 %
Duration
4.111 h
Impact parameter b
0.229
Rp / R★
0.011541
Transit midpoint (BJD)
2,454,996.7522
Photometric dip
Transit produces a flux drop of 169 ppm lasting ≈ 4.11 h.
Extended Orbital Architecture
Planet / star radius ratio
0.011541
Semi-major axis / stellar radius
61.340
Impact parameter (b)
0.229
Transit mid-time (BJD)
2,454,996.7522
Angular separation (arcsec)
0.81000
Eq. Temperature
630K
(357 °C)
Insolation (S⊕)
37.30
Earth = 1.00
Earth Similarity (ESI)
0.497
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
Armstrong et al. 2021Instrument
Kepler CCD Array
Publication
2021-07
Observation locale
Space
Discovery cohort
Planets confirmed in 2020 at Kepler (12 shown).
Host System: Kepler-1697
Spectral Class
K-type orange
Effective Temperature
4,682 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.772 R☉
Stellar Mass
0.747 M☉
Metallicity [Fe/H]
0.03
Extended Stellar Properties
Surface gravity (log g)
4.536 dex
Stellar density
2.286 g/cm³
Systemic radial velocity
-25.26 km/s
Metallicity ratio
[M/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
4.007 mas
Total Proper Motion
21.902 mas/yr
PM Right Ascension
-10.04 mas/yr
PM Declination
-19.46 mas/yr
Galactic Cartesian (pc)
x = 0.220 · y = -0.692 · z = 0.688
Equatorial (J2000)
RA 287.66333° · Dec 43.47138°
Galactic ℓ, b
74.441° · 15.048°
Ecliptic λ, β
301.394° · 64.997°
HTM-20 index
7906496
Similar Worlds
Kepler-755 c
Super-Earth · K-type orange
Radius 1.26 R⊕ · 1,301.5 ly
TOI-5789 b
Super-Earth · K-type orange
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Kepler-1029 b
Super-Earth · K-type orange
Radius 1.26 R⊕ · 1,195.9 ly
Kepler-211 b
Super-Earth · K-type orange
Radius 1.26 R⊕ · 1,009.0 ly
Kepler-1688 b
Super-Earth · K-type orange
Radius 1.26 R⊕ · 1,850.8 ly
K2-203 b
Super-Earth · K-type orange
Radius 1.27 R⊕ · 541.9 ly