Key parameters at a glance
- A radius of 6.20 Earth radii
- A mass of 16.00 Earth masses
- Surface gravity around 0.42 g
- An orbital period of 240.503 days
- Semi-major axis 0.7903 AU
- Distance from Earth 1,444.37 light-years
- Earth Similarity Index 0.633
- Travel time at Voyager 1 speed 25,471,442 years
Context from the literature
Kepler-453b is a transiting circumbinary exoplanet in the binary-star system Kepler-453. It orbits the binary system in the habitable zone every 240.5 days. The orbit of the planet is inclined relative to the binary orbit therefore precession of the orbit leads to it spending most of its time in a non-transiting configuration. By the time the TESS and PLATO spacecraft are available for follow up observations it will no longer be transiting.
Excerpted from Wikipedia · full article
Circumbinary planet
Kepler-453 b orbits a binary-star pair rather than a single host — a minority architecture in the confirmed catalogue.
Kepler-453 b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#261of 574
top 45.3%
This planet
6.20R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | Kepler-453 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 6.20 | 11.21 |
| Mass (M⊕) | 1.00 | 16.00 | 317.83 |
| Density (g/cm³) | 5.51 | — | 1.33 |
| Surface Gravity (g) | 1.00 | 0.42 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 16.000 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 164457525
Gaia DR2
Gaia DR2 2107434834610481920
Gaia DR3
Gaia DR3 2107434834610481920
System
Kepler-453
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 240.50 Earth days (65.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.7903 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.633
0 = alien, 1 = Earth-identical
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Radial velocity
Stellar wobble has been measured spectroscopically.
Discovery Paper
Primary reference
Welsh et al. 2015Instrument
Kepler CCD Array
Publication
2015-08
Observation locale
Space
Discovery cohort
Planets confirmed in 2015 at Kepler (12 shown).
Host System: Kepler-453
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,527 K — cooler than the Sun (5,778 K)
Estimated Age
2.49 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.833 R☉
Stellar Mass
0.944 M☉
Metallicity [Fe/H]
0.09
Extended Stellar Properties
Surface gravity (log g)
4.571 dex
Stellar density
2.348 g/cm³
Rotational v·sin i
1.90 km/s
Metallicity ratio
[M/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.229 mas
Total Proper Motion
8.414 mas/yr
PM Right Ascension
7.31 mas/yr
PM Declination
-4.17 mas/yr
Galactic Cartesian (pc)
x = 0.158 · y = -0.672 · z = 0.724
Equatorial (J2000)
RA 283.24133° · Dec 46.37847°
Galactic ℓ, b
76.067° · 19.026°
Ecliptic λ, β
295.707° · 68.639°
HTM-20 index
1613052864
Similar Worlds
HD 49674 b
Neptune-like · G-type yellow (Sun-like)
Radius 6.20 R⊕ · 140.4 ly
TOI-1386 b
Neptune-like · G-type yellow (Sun-like)
Radius 6.22 R⊕ · 479.0 ly
Kepler-397 c
Neptune-like · G-type yellow (Sun-like)
Radius 6.18 R⊕ · 3,160.5 ly
K2-333 b
Neptune-like · G-type yellow (Sun-like)
Radius 6.18 R⊕ · 1,121.9 ly
TOI-5005 b
Neptune-like · G-type yellow (Sun-like)
Radius 6.25 R⊕ · 678.0 ly
Kepler-696 b
Neptune-like · G-type yellow (Sun-like)
Radius 6.14 R⊕ · 4,619.8 ly