Key parameters at a glance
- A radius of 16.25 Earth radii
- A mass of 896.24 Earth masses
- Surface gravity around 3.39 g
- An orbital period of 5.334 days
- Semi-major axis 0.0679 AU
- Equilibrium temperature 1,776 K (1503 °C)
- Distance from Earth 6,126.22 light-years
- Earth Similarity Index 0.072
- Travel time at Voyager 1 speed 108,035,897 years
Kepler-433 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#145of 1771
top 8.1%
This planet
16.25R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | Kepler-433 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 16.25 | 11.21 |
| Mass (M⊕) | 1.00 | 896.24 | 317.83 |
| Density (g/cm³) | 5.51 | 1.13 | 1.33 |
| Surface Gravity (g) | 1.00 | 3.39 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,682.66 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 896.240 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 169556484
Gaia DR2
Gaia DR2 2073856917743350784
Gaia DR3
Gaia DR3 2073856917743350784
System
Kepler-433
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.33 Earth days (1.5% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.0679 AU.
Transit Fingerprint
Depth
0.511 %
Duration
6.178 h
Impact parameter b
0.082
Rp / R★
0.065900
Transit midpoint (BJD)
2,454,964.9815
Photometric dip
Transit produces a flux drop of 5,106 ppm lasting ≈ 6.18 h.
Extended Orbital Architecture
Planet / star radius ratio
0.065900
Semi-major axis / stellar radius
6.440
Impact parameter (b)
0.082
RV semi-amplitude (K)
259.000 m/s
Transit mid-time (BJD)
2,454,964.9815
Long. of periastron (ω)
68.00°
Angular separation (arcsec)
0.03610
Eq. Temperature
1,776K
(1503 °C)
Insolation (S⊕)
1,682.66
Earth = 1.00
Earth Similarity (ESI)
0.072
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
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
Almenara et al. 2015Instrument
Kepler CCD Array
Publication
2015-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2015 at Kepler (12 shown).
Host System: Kepler-433
Spectral Class
F-type yellow-white
Effective Temperature
6,360 K — hotter than the Sun (5,778 K)
Estimated Age
2.67 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
2.260 R☉
Stellar Mass
1.460 M☉
Metallicity [Fe/H]
-0.01
Extended Stellar Properties
Surface gravity (log g)
3.892 dex
Stellar density
0.177 g/cm³
Systemic radial velocity
-1.28 km/s
Rotational v·sin i
11.00 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.504 mas
Total Proper Motion
3.155 mas/yr
PM Right Ascension
-2.01 mas/yr
PM Declination
-2.43 mas/yr
Galactic Cartesian (pc)
x = 0.350 · y = -0.669 · z = 0.656
Equatorial (J2000)
RA 297.59362° · Dec 40.97725°
Galactic ℓ, b
75.522° · 7.361°
Ecliptic λ, β
314.724° · 60.204°
HTM-20 index
-79489847
Similar Worlds
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Radius 16.14 R⊕ · 944.8 ly