Key parameters at a glance
- A radius of 4.00 Earth radii
- A mass of 6.00 Earth masses
- Surface gravity around 0.38 g
- An orbital period of 207.620 days
- Semi-major axis 0.7584 AU
- Equilibrium temperature 453 K (180 °C)
- Distance from Earth 1,945.93 light-years
- Earth Similarity Index 0.355
- Travel time at Voyager 1 speed 34,316,443 years
1 sibling around Kepler-462
Kepler-462 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-462 b | Sub-Neptune | 3.00 | 53.90 | 84.687 | 611 | 2016 |
| Kepler-462 c this | Neptune-like | 4.00 | 6.00 | 207.620 | 453 | 2020 |
Kepler-462 c Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#571of 574
top 99.3%
This planet
4.00R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | Kepler-462 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 4.00 | 11.21 |
| Mass (M⊕) | 1.00 | 6.00 | 317.83 |
| Density (g/cm³) | 5.51 | 0.40 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.38 | 2.53 |
| Insolation (S⊕) | 1.00 | 9.97 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 6.000 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 269263577
Gaia DR2
Gaia DR2 2075998903831657472
Gaia DR3
Gaia DR3 2075998903831657472
System
Kepler-462
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 207.62 Earth days (56.8% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.7584 AU.
Transit Fingerprint
Depth
0.051 %
Duration
6.733 h
Impact parameter b
0.890
Rp / R★
0.023200
Transit midpoint (BJD)
2,455,122.8831
Photometric dip
Transit produces a flux drop of 505 ppm lasting ≈ 6.73 h.
Extended Orbital Architecture
Planet / star radius ratio
0.023200
Semi-major axis / stellar radius
119.000
Impact parameter (b)
0.890
Transit mid-time (BJD)
2,455,122.8831
Long. of periastron (ω)
14.90°
Angular separation (arcsec)
1.27000
Eq. Temperature
453K
(180 °C)
Insolation (S⊕)
9.97
Earth = 1.00
Earth Similarity (ESI)
0.355
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Transit timing variations
Gravitational interactions from neighbours have been detected.
Discovery Paper
Primary reference
Ofir et al. 2018Instrument
Kepler CCD Array
Publication
2018-01
Observation locale
Space
Discovery cohort
Planets confirmed in 2020 at Kepler (12 shown).
Host System: Kepler-462
Spectral Class
A-type white
Effective Temperature
7,500 K — hotter than the Sun (5,778 K)
Estimated Age
0.50 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.570 R☉
Stellar Mass
1.590 M☉
Metallicity [Fe/H]
0.05
Extended Stellar Properties
Surface gravity (log g)
4.220 dex
Stellar density
0.560 g/cm³
Rotational v·sin i
80.00 km/s
Rotation period
0.37 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.648 mas
Total Proper Motion
1.357 mas/yr
PM Right Ascension
-1.28 mas/yr
PM Declination
-0.44 mas/yr
Galactic Cartesian (pc)
x = 0.359 · y = -0.626 · z = 0.692
Equatorial (J2000)
RA 299.82115° · Dec 43.81428°
Galactic ℓ, b
78.829° · 7.373°
Ecliptic λ, β
320.195° · 62.155°
HTM-20 index
1713944515