Key parameters at a glance
- A radius of 32.60 Earth radii
- An orbital period of 150.019 days
- Semi-major axis 0.5230 AU
- Equilibrium temperature 325 K (52 °C)
- Distance from Earth 2,257.46 light-years
- Earth Similarity Index 0.376
- Travel time at Voyager 1 speed 39,810,237 years
2 siblings around Kepler-297
Kepler-297 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-297 b | Sub-Neptune | 2.87 | 48.50 | 38.872 | 509 | 2014 |
| Kepler-297 c | Neptune-like | 6.54 | 42.10 | 74.920 | 409 | 2014 |
| Kepler-297 d this | Gas Giant | 32.60 | — | 150.019 | 325 | 2023 |
Kepler-297 d Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#3of 1771
top 0.1%
This planet
32.60R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | Kepler-297 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 32.60 | 11.21 |
| Mass (M⊕) | 1.00 | — | 317.83 |
| Density (g/cm³) | 5.51 | — | 1.33 |
| Surface Gravity (g) | 1.00 | — | 2.53 |
| Insolation (S⊕) | 1.00 | 2.62 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 48304302
Gaia DR2
Gaia DR2 2131748747552136960
Gaia DR3
Gaia DR3 2131748747552136960
System
Kepler-297
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 150.02 Earth days (41.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.5230 AU.
Transit Fingerprint
Depth
0.432 %
Duration
4.382 h
Impact parameter b
1.252
Rp / R★
0.332851
Transit midpoint (BJD)
2,455,057.6857
Photometric dip
Transit produces a flux drop of 4,320 ppm lasting ≈ 4.38 h.
Extended Orbital Architecture
Planet / star radius ratio
0.332851
Semi-major axis / stellar radius
119.300
Impact parameter (b)
1.252
Transit mid-time (BJD)
2,455,057.6857
Angular separation (arcsec)
0.75600
Eq. Temperature
325K
(52 °C)
Insolation (S⊕)
2.62
Earth = 1.00
Earth Similarity (ESI)
0.376
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — liquid water is physically possible with adequate atmospheric pressure.
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
Valizadegan et al. 2023Instrument
Kepler CCD Array
Publication
2023-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Kepler (12 shown).
Host System: Kepler-297
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,618 K — cooler than the Sun (5,778 K)
Estimated Age
1.90 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.897 R☉
Stellar Mass
0.846 M☉
Metallicity [Fe/H]
-0.22
Extended Stellar Properties
Surface gravity (log g)
4.460 dex
Stellar density
1.426 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.416 mas
Total Proper Motion
2.487 mas/yr
PM Right Ascension
2.16 mas/yr
PM Declination
-1.23 mas/yr
Galactic Cartesian (pc)
x = 0.151 · y = -0.642 · z = 0.752
Equatorial (J2000)
RA 283.20916° · Dec 48.77762°
Galactic ℓ, b
78.461° · 19.840°
Ecliptic λ, β
297.484° · 70.959°
HTM-20 index
1906438192
Similar Worlds
Kepler-1979 b
Gas Giant · G-type yellow (Sun-like)
Radius 29.33 R⊕ · 3,510.3 ly
TOI-3540 A b
Gas Giant · G-type yellow (Sun-like)
Radius 23.54 R⊕ · —
HATS-23 b
Gas Giant · G-type yellow (Sun-like)
Radius 20.85 R⊕ · 2,084.1 ly
TOI-2193 A b
Gas Giant · G-type yellow (Sun-like)
Radius 19.84 R⊕ · 1,099.4 ly
Kepler-12 b
Gas Giant · G-type yellow (Sun-like)
Radius 19.66 R⊕ · 2,874.7 ly
KELT-14 b
Gas Giant · G-type yellow (Sun-like)
Radius 19.54 R⊕ · 815.8 ly