Key parameters at a glance
- A radius of 3.33 Earth radii
- A mass of 11.10 Earth masses
- Surface gravity around 1.00 g
- An orbital period of 19.591 days
- Semi-major axis 0.1456 AU
- Equilibrium temperature 819 K (546 °C)
- Distance from Earth 6,194.49 light-years
- Earth Similarity Index 0.276
- Travel time at Voyager 1 speed 109,239,741 years
2 siblings around Kepler-1468
Kepler-1468 d shares its host star with 2 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-1468 c | Rocky Terrestrial | 1.15 | 1.60 | 3.546 | 1,448 | 2016 |
| Kepler-1468 b | Super-Earth | 1.73 | 3.64 | 8.240 | 1,093 | 2016 |
| Kepler-1468 d this | Sub-Neptune | 3.33 | 11.10 | 19.591 | 819 | 2021 |
Kepler-1468 d Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#260of 1978
top 13.1%
This planet
3.33R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-1468 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.33 | 11.21 |
| Mass (M⊕) | 1.00 | 11.10 | 317.83 |
| Density (g/cm³) | 5.51 | 1.65 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.00 | 2.53 |
| Insolation (S⊕) | 1.00 | 52.77 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 138219758
Gaia DR2
Gaia DR2 2077389820395188736
Gaia DR3
Gaia DR3 2077389820395188736
System
Kepler-1468
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 19.59 Earth days (5.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1456 AU.
Transit Fingerprint
Depth
0.030 %
Duration
6.665 h
Impact parameter b
0.095
Rp / R★
0.015985
Transit midpoint (BJD)
2,454,977.6587
Photometric dip
Transit produces a flux drop of 297 ppm lasting ≈ 6.67 h.
Extended Orbital Architecture
Planet / star radius ratio
0.015985
Semi-major axis / stellar radius
22.720
Impact parameter (b)
0.095
Transit mid-time (BJD)
2,454,977.6587
Angular separation (arcsec)
0.07670
Eq. Temperature
819K
(546 °C)
Insolation (S⊕)
52.77
Earth = 1.00
Earth Similarity (ESI)
0.276
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
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-1468
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,794 K — hotter than the Sun (5,778 K)
Estimated Age
3.55 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.496 R☉
Stellar Mass
1.072 M☉
Metallicity [Fe/H]
0.14
Extended Stellar Properties
Surface gravity (log g)
4.118 dex
Stellar density
0.353 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.498 mas
Total Proper Motion
13.906 mas/yr
PM Right Ascension
-7.76 mas/yr
PM Declination
-11.54 mas/yr
Galactic Cartesian (pc)
x = 0.300 · y = -0.689 · z = 0.660
Equatorial (J2000)
RA 293.51983° · Dec 41.27737°
Galactic ℓ, b
74.306° · 10.200°
Ecliptic λ, β
309.037° · 61.567°
HTM-20 index
1415711737
Similar Worlds
Kepler-11 g
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.33 R⊕ · 2,108.1 ly
K2-111 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.34 R⊕ · 653.6 ly
Kepler-940 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.34 R⊕ · 4,112.1 ly
Kepler-728 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.34 R⊕ · 5,757.4 ly
Kepler-1740 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.32 R⊕ · 3,463.0 ly
Kepler-739 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.32 R⊕ · 4,470.5 ly