Key parameters at a glance
- A radius of 1.94 Earth radii
- A mass of 4.42 Earth masses
- Surface gravity around 1.17 g
- An orbital period of 14.375 days
- Semi-major axis 0.1129 AU
- Equilibrium temperature 779 K (506 °C)
- Distance from Earth 2,118.87 light-years
- Earth Similarity Index 0.357
- Travel time at Voyager 1 speed 37,366,314 years
1 sibling around Kepler-804
Kepler-804 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-804 c | Rocky Terrestrial | 1.14 | 1.55 | 9.652 | 890 | 2016 |
| Kepler-804 b this | Super-Earth | 1.94 | 4.42 | 14.375 | 779 | 2016 |
Kepler-804 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#79of 1176
top 6.6%
This planet
1.94R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-804 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.94 | 11.21 |
| Mass (M⊕) | 1.00 | 4.42 | 317.83 |
| Density (g/cm³) | 5.51 | 3.33 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.17 | 2.53 |
| Insolation (S⊕) | 1.00 | 83.43 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 275573295
Gaia DR2
Gaia DR2 2126432677554353280
Gaia DR3
Gaia DR3 2126432677554353280
System
Kepler-804
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 14.37 Earth days (3.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1129 AU.
Transit Fingerprint
Depth
0.034 %
Duration
4.782 h
Impact parameter b
0.035
Rp / R★
0.016889
Transit midpoint (BJD)
2,454,971.2022
Photometric dip
Transit produces a flux drop of 336 ppm lasting ≈ 4.78 h.
Extended Orbital Architecture
Planet / star radius ratio
0.016889
Semi-major axis / stellar radius
23.352
Impact parameter (b)
0.035
Transit mid-time (BJD)
2,454,971.2022
Angular separation (arcsec)
0.17400
Eq. Temperature
779K
(506 °C)
Insolation (S⊕)
83.43
Earth = 1.00
Earth Similarity (ESI)
0.357
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
Discovery Paper
Primary reference
Morton et al. 2016Instrument
Kepler CCD Array
Publication
2016-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2016 at Kepler (12 shown).
Host System: Kepler-804
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,817 K — hotter than the Sun (5,778 K)
Estimated Age
5.25 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.050 R☉
Stellar Mass
1.010 M☉
Metallicity [Fe/H]
0.00
Extended Stellar Properties
Surface gravity (log g)
4.400 dex
Stellar density
0.810 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.511 mas
Total Proper Motion
6.930 mas/yr
PM Right Ascension
-6.56 mas/yr
PM Declination
2.22 mas/yr
Galactic Cartesian (pc)
x = 0.282 · y = -0.652 · z = 0.704
Equatorial (J2000)
RA 293.37221° · Dec 44.78518°
Galactic ℓ, b
77.442° · 11.886°
Ecliptic λ, β
311.559° · 64.888°
HTM-20 index
-1857977837
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Kepler-1232 b
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