Key parameters at a glance
- A radius of 2.85 Earth radii
- A mass of 8.50 Earth masses
- Surface gravity around 1.05 g
- An orbital period of 51.079 days
- Semi-major axis 0.2677 AU
- Equilibrium temperature 503 K (230 °C)
- Distance from Earth 1,729.02 light-years
- Earth Similarity Index 0.469
- Travel time at Voyager 1 speed 30,491,349 years
1 sibling around Kepler-466
Kepler-466 b 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-466 c | Super-Earth | 1.25 | 2.10 | 3.709 | 1,206 | 2016 |
| Kepler-466 b this | Sub-Neptune | 2.85 | 8.50 | 51.079 | 503 | 2016 |
Kepler-466 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#685of 1978
top 34.6%
This planet
2.85R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-466 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.85 | 11.21 |
| Mass (M⊕) | 1.00 | 8.50 | 317.83 |
| Density (g/cm³) | 5.51 | 2.02 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.05 | 2.53 |
| Insolation (S⊕) | 1.00 | 12.50 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 27644083
Gaia DR2
Gaia DR2 2134719834131370496
Gaia DR3
Gaia DR3 2134719834131370496
System
Kepler-466
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 51.08 Earth days (14.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2677 AU.
Transit Fingerprint
Depth
0.074 %
Duration
6.373 h
Impact parameter b
0.615
Rp / R★
0.024680
Transit midpoint (BJD)
2,455,018.1806
Photometric dip
Transit produces a flux drop of 737 ppm lasting ≈ 6.37 h.
Extended Orbital Architecture
Planet / star radius ratio
0.024680
Semi-major axis / stellar radius
62.716
Impact parameter (b)
0.615
Transit mid-time (BJD)
2,455,018.1806
Angular separation (arcsec)
0.50500
Eq. Temperature
503K
(230 °C)
Insolation (S⊕)
12.50
Earth = 1.00
Earth Similarity (ESI)
0.469
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-466
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,927 K — hotter than the Sun (5,778 K)
Estimated Age
3.47 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.050 R☉
Stellar Mass
1.040 M☉
Metallicity [Fe/H]
-0.01
Extended Stellar Properties
Surface gravity (log g)
4.420 dex
Stellar density
1.790 g/cm³
Systemic radial velocity
0.30 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.607 mas
Total Proper Motion
8.332 mas/yr
PM Right Ascension
-5.34 mas/yr
PM Declination
-6.39 mas/yr
Galactic Cartesian (pc)
x = 0.287 · y = -0.597 · z = 0.749
Equatorial (J2000)
RA 295.64866° · Dec 48.49552°
Galactic ℓ, b
81.547° · 12.177°
Ecliptic λ, β
318.900° · 67.628°
HTM-20 index
1720621453
Similar Worlds
Kepler-288 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.85 R⊕ · 3,894.8 ly
HD 39855 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.85 R⊕ · 75.9 ly
Kepler-800 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.85 R⊕ · 3,324.4 ly
HD 189567 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.85 R⊕ · 58.4 ly
Kepler-358 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.85 R⊕ · 3,591.3 ly
HD 135694 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.86 R⊕ · 240.9 ly