Key parameters at a glance
- A radius of 11.77 Earth radii
- A mass of 3,209.90 Earth masses
- Surface gravity around 23.17 g
- An orbital period of 8.885 days
- Semi-major axis 0.0818 AU
- Equilibrium temperature 767 K (494 °C)
- Distance from Earth 2,724.56 light-years
- Earth Similarity Index 0.203
- Travel time at Voyager 1 speed 48,047,678 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-75 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1562of 1771
top 88.1%
This planet
11.77R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | Kepler-75 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 11.77 | 11.21 |
| Mass (M⊕) | 1.00 | 3,209.90 | 317.83 |
| Density (g/cm³) | 5.51 | 11.00 | 1.33 |
| Surface Gravity (g) | 1.00 | 23.17 | 2.53 |
| Insolation (S⊕) | 1.00 | 106.48 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 3,209.900 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 122785299
Gaia DR2
Gaia DR2 2050231848829944320
Gaia DR3
Gaia DR3 2050231848829944320
System
Kepler-75
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 8.88 Earth days (2.4% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.0818 AU.
Transit Fingerprint
Depth
1.767 %
Duration
2.078 h
Impact parameter b
0.130
Rp / R★
0.121200
Transit midpoint (BJD)
2,455,640.4403
Photometric dip
Transit produces a flux drop of 17,670 ppm lasting ≈ 2.08 h.
Extended Orbital Architecture
Planet / star radius ratio
0.121200
Semi-major axis / stellar radius
19.770
Impact parameter (b)
0.130
RV semi-amplitude (K)
1,287.000 m/s
Transit mid-time (BJD)
2,455,640.4403
Long. of periastron (ω)
63.50°
Angular separation (arcsec)
0.09790
Eq. Temperature
767K
(494 °C)
Insolation (S⊕)
106.48
Earth = 1.00
Earth Similarity (ESI)
0.203
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.
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
Hebrard et al. 2013Instrument
Kepler CCD Array
Publication
2013-06
Observation locale
Space
Discovery cohort
Planets confirmed in 2013 at Kepler (12 shown).
Host System: Kepler-75
Spectral Class
K-type orange
Effective Temperature
5,200 K — cooler than the Sun (5,778 K)
Estimated Age
6.20 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.890 R☉
Stellar Mass
0.910 M☉
Metallicity [Fe/H]
0.30
Extended Stellar Properties
Surface gravity (log g)
4.500 dex
Stellar density
1.850 g/cm³
Systemic radial velocity
-64.18 km/s
Rotational v·sin i
3.50 km/s
Rotation period
19.18 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.169 mas
Total Proper Motion
8.357 mas/yr
PM Right Ascension
7.99 mas/yr
PM Declination
-2.45 mas/yr
Galactic Cartesian (pc)
x = 0.290 · y = -0.749 · z = 0.596
Equatorial (J2000)
RA 291.13762° · Dec 36.57734°
Galactic ℓ, b
69.200° · 9.719°
Ecliptic λ, β
302.748° · 57.637°
HTM-20 index
-1698852045
Similar Worlds
HAT-P-17 b
Gas Giant · K-type orange
Radius 11.77 R⊕ · 301.3 ly
HD 184010 c
Gas Giant · K-type orange
Radius 11.80 R⊕ · 198.3 ly
TOI-2379 b
Gas Giant · K-type orange
Radius 11.72 R⊕ · 689.0 ly
TOI-4551 b
Gas Giant · K-type orange
Radius 11.86 R⊕ · 704.5 ly
WASP-89 b
Gas Giant · K-type orange
Radius 11.66 R⊕ · 948.9 ly
HD 153557 d
Gas Giant · K-type orange
Radius 11.90 R⊕ · 58.5 ly