Key parameters at a glance
- A radius of 1.50 Earth radii
- A mass of 2.86 Earth masses
- Surface gravity around 1.27 g
- An orbital period of 7.281 days
- Semi-major axis 0.0696 AU
- Equilibrium temperature 744 K (471 °C)
- Distance from Earth 2,449.20 light-years
- Earth Similarity Index 0.407
- Travel time at Voyager 1 speed 43,191,697 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1968 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#747of 1176
top 63.4%
This planet
1.50R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1968 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.50 | 11.21 |
| Mass (M⊕) | 1.00 | 2.86 | 317.83 |
| Density (g/cm³) | 5.51 | 4.66 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.27 | 2.53 |
| Insolation (S⊕) | 1.00 | 72.16 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 159762011
Gaia DR2
Gaia DR2 2126669411851377792
Gaia DR3
Gaia DR3 2126669411851377792
System
Kepler-1968
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 7.28 Earth days (2.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0696 AU.
Transit Fingerprint
Depth
0.033 %
Duration
2.716 h
Impact parameter b
0.106
Rp / R★
0.016223
Transit midpoint (BJD)
2,454,965.7518
Photometric dip
Transit produces a flux drop of 334 ppm lasting ≈ 2.72 h.
Extended Orbital Architecture
Planet / star radius ratio
0.016223
Semi-major axis / stellar radius
20.720
Impact parameter (b)
0.106
Transit mid-time (BJD)
2,454,965.7518
Angular separation (arcsec)
0.09270
Eq. Temperature
744K
(471 °C)
Insolation (S⊕)
72.16
Earth = 1.00
Earth Similarity (ESI)
0.407
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-1968
Spectral Class
K-type orange
Effective Temperature
5,008 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.788 R☉
Stellar Mass
0.844 M☉
Metallicity [Fe/H]
0.18
Extended Stellar Properties
Surface gravity (log g)
4.572 dex
Stellar density
3.175 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.304 mas
Total Proper Motion
23.171 mas/yr
PM Right Ascension
-12.70 mas/yr
PM Declination
-19.38 mas/yr
Galactic Cartesian (pc)
x = 0.258 · y = -0.654 · z = 0.712
Equatorial (J2000)
RA 291.50803° · Dec 45.37009°
Galactic ℓ, b
77.391° · 13.326°
Ecliptic λ, β
309.127° · 65.913°
HTM-20 index
1372412351
Similar Worlds
K2-268 b
Super-Earth · K-type orange
Radius 1.50 R⊕ · 1,069.1 ly
TOI-1807 b
Super-Earth · K-type orange
Radius 1.50 R⊕ · 138.9 ly
TOI-2345 b
Super-Earth · K-type orange
Radius 1.50 R⊕ · 266.3 ly
Kepler-828 b
Super-Earth · K-type orange
Radius 1.51 R⊕ · 1,876.4 ly
Kepler-1324 b
Super-Earth · K-type orange
Radius 1.51 R⊕ · 1,571.0 ly
K2-141 b
Super-Earth · K-type orange
Radius 1.51 R⊕ · 201.8 ly