Key parameters at a glance
- A radius of 12.83 Earth radii
- A mass of 1,719.46 Earth masses
- Surface gravity around 10.44 g
- An orbital period of 52.501 days
- Semi-major axis 0.3010 AU
- Equilibrium temperature 812 K (539 °C)
- Distance from Earth 2,765.88 light-years
- Earth Similarity Index 0.217
- Travel time at Voyager 1 speed 48,776,254 years
1 sibling around Kepler-432
Kepler-432 b 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-432 b this | Gas Giant | 12.83 | 1,719.46 | 52.501 | 812 | 2015 |
| Kepler-432 c | Gas Giant | 13.30 | 772.33 | 406.200 | — | 2015 |
Kepler-432 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1056of 1771
top 59.6%
This planet
12.83R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | Kepler-432 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.83 | 11.21 |
| Mass (M⊕) | 1.00 | 1,719.46 | 317.83 |
| Density (g/cm³) | 5.51 | 4.46 | 1.33 |
| Surface Gravity (g) | 1.00 | 10.44 | 2.53 |
| Insolation (S⊕) | 1.00 | 97.85 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 1,719.460 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 26817004
Gaia DR2
Gaia DR2 2128901871432519936
Gaia DR3
Gaia DR3 2128901871432519936
System
Kepler-432
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 52.50 Earth days (14.4% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.3010 AU.
Transit Fingerprint
Depth
0.095 %
Duration
14.907 h
Impact parameter b
0.503
Rp / R★
0.029140
Transit midpoint (BJD)
2,455,949.5374
Photometric dip
Transit produces a flux drop of 947 ppm lasting ≈ 14.91 h.
Extended Orbital Architecture
Planet / star radius ratio
0.029140
Semi-major axis / stellar radius
15.689
Impact parameter (b)
0.503
RV semi-amplitude (K)
286.800 m/s
Transit mid-time (BJD)
2,455,949.5374
Long. of periastron (ω)
64.10°
Angular separation (arcsec)
0.35500
Eq. Temperature
812K
(539 °C)
Insolation (S⊕)
97.85
Earth = 1.00
Earth Similarity (ESI)
0.217
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.
Radial velocity
Stellar wobble has been measured spectroscopically.
Discovery Paper
Primary reference
Ciceri et al. 2015Instrument
Kepler CCD Array
Publication
2015-01
Observation locale
Space
Discovery cohort
Planets confirmed in 2015 at Kepler (12 shown).
Host System: Kepler-432
Spectral Class
K-type orange
Effective Temperature
4,995 K — cooler than the Sun (5,778 K)
Estimated Age
4.20 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
4.060 R☉
Stellar Mass
1.320 M☉
Metallicity [Fe/H]
-0.07
Extended Stellar Properties
Surface gravity (log g)
3.345 dex
Stellar density
0.028 g/cm³
Systemic radial velocity
-35.22 km/s
Rotational v·sin i
2.70 km/s
Rotation period
77.00 days
Metallicity ratio
[M/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.151 mas
Total Proper Motion
11.088 mas/yr
PM Right Ascension
4.53 mas/yr
PM Declination
10.12 mas/yr
Galactic Cartesian (pc)
x = 0.263 · y = -0.611 · z = 0.746
Equatorial (J2000)
RA 293.28223° · Dec 48.28592°
Galactic ℓ, b
80.633° · 13.488°
Ecliptic λ, β
314.904° · 68.127°
HTM-20 index
-580283222
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