Key parameters at a glance
- A radius of 10.69 Earth radii
- A mass of 80.20 Earth masses
- Surface gravity around 0.70 g
- An orbital period of 5.058 days
- Semi-major axis 0.0567 AU
- Equilibrium temperature 1,168 K (895 °C)
- Distance from Earth 1,389.71 light-years
- Earth Similarity Index 0.109
- Travel time at Voyager 1 speed 24,507,562 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around Kepler-975
Kepler-975 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-975 b | Super-Earth | 1.48 | 2.79 | 1.970 | 1,599 | 2016 |
| Kepler-975 c this | Gas Giant | 10.69 | 80.20 | 5.058 | 1,168 | 2023 |
Kepler-975 c Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1708of 1771
top 96.4%
This planet
10.69R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | Kepler-975 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 10.69 | 11.21 |
| Mass (M⊕) | 1.00 | 80.20 | 317.83 |
| Density (g/cm³) | 5.51 | 0.36 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.70 | 2.53 |
| Insolation (S⊕) | 1.00 | 439.80 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 122450762
Gaia DR2
Gaia DR2 2052826318309391104
Gaia DR3
Gaia DR3 2052826318309391104
System
Kepler-975
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.06 Earth days (1.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0567 AU.
Transit Fingerprint
Depth
0.075 %
Duration
1.132 h
Impact parameter b
1.004
Rp / R★
0.058714
Transit midpoint (BJD)
2,454,968.7025
Photometric dip
Transit produces a flux drop of 748 ppm lasting ≈ 1.13 h.
Extended Orbital Architecture
Planet / star radius ratio
0.058714
Semi-major axis / stellar radius
11.530
Impact parameter (b)
1.004
Transit mid-time (BJD)
2,454,968.7025
Angular separation (arcsec)
0.13300
Eq. Temperature
1,168K
(895 °C)
Insolation (S⊕)
439.80
Earth = 1.00
Earth Similarity (ESI)
0.109
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched. Close-orbiting tidally-locked around a cool host.
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-975
Spectral Class
K-type orange
Effective Temperature
4,883 K — cooler than the Sun (5,778 K)
Estimated Age
13.90 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.667 R☉
Stellar Mass
0.951 M☉
Metallicity [Fe/H]
0.56
Extended Stellar Properties
Surface gravity (log g)
3.972 dex
Stellar density
1.133 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
2.318 mas
Total Proper Motion
8.971 mas/yr
PM Right Ascension
-3.72 mas/yr
PM Declination
-8.16 mas/yr
Galactic Cartesian (pc)
x = 0.275 · y = -0.733 · z = 0.622
Equatorial (J2000)
RA 290.54851° · Dec 38.49524°
Galactic ℓ, b
70.736° · 10.990°
Ecliptic λ, β
302.887° · 59.610°
HTM-20 index
1938318411
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