Key parameters at a glance
- A radius of 6.88 Earth radii
- A mass of 37.90 Earth masses
- Surface gravity around 0.80 g
- An orbital period of 133.461 days
- Semi-major axis 0.5167 AU
- Equilibrium temperature 433 K (160 °C)
- Distance from Earth 4,921.97 light-years
- Earth Similarity Index 0.361
- Travel time at Voyager 1 speed 86,798,901 years
1 sibling around Kepler-799
Kepler-799 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-799 c | Sub-Neptune | 2.78 | 8.15 | 15.194 | 893 | 2021 |
| Kepler-799 b this | Neptune-like | 6.88 | 37.90 | 133.461 | 433 | 2016 |
Kepler-799 b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#215of 574
top 37.3%
This planet
6.88R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | Kepler-799 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 6.88 | 11.21 |
| Mass (M⊕) | 1.00 | 37.90 | 317.83 |
| Density (g/cm³) | 5.51 | 0.64 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.80 | 2.53 |
| Insolation (S⊕) | 1.00 | 6.36 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 158419284
System
Kepler-799
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 133.46 Earth days (36.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.5167 AU.
Transit Fingerprint
Depth
0.503 %
Duration
11.611 h
Impact parameter b
0.629
Rp / R★
0.068245
Transit midpoint (BJD)
2,455,049.0457
Photometric dip
Transit produces a flux drop of 5,033 ppm lasting ≈ 11.61 h.
Extended Orbital Architecture
Planet / star radius ratio
0.068245
Semi-major axis / stellar radius
73.800
Impact parameter (b)
0.629
Transit mid-time (BJD)
2,455,049.0457
Angular separation (arcsec)
0.34200
Eq. Temperature
433K
(160 °C)
Insolation (S⊕)
6.36
Earth = 1.00
Earth Similarity (ESI)
0.361
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-799
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,681 K — cooler than the Sun (5,778 K)
Estimated Age
3.98 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.930 R☉
Stellar Mass
0.950 M☉
Metallicity [Fe/H]
-0.07
Extended Stellar Properties
Surface gravity (log g)
4.490 dex
Stellar density
0.820 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 15 bands
Astrometric Data
Total Proper Motion
12.469 mas/yr
PM Right Ascension
-5.47 mas/yr
PM Declination
-11.21 mas/yr
Galactic Cartesian (pc)
x = 0.209 · y = -0.677 · z = 0.706
Equatorial (J2000)
RA 287.17490° · Dec 44.87848°
Galactic ℓ, b
75.644° · 15.920°
Ecliptic λ, β
301.570° · 66.445°
HTM-20 index
-1897511647
Similar Worlds
HD 34445 f
Neptune-like · G-type yellow (Sun-like)
Radius 6.88 R⊕ · 150.3 ly
HATS-38 b
Neptune-like · G-type yellow (Sun-like)
Radius 6.88 R⊕ · 1,120.4 ly
HD 25912 b
Neptune-like · G-type yellow (Sun-like)
Radius 6.90 R⊕ · 160.4 ly
TOI-1248 b
Neptune-like · G-type yellow (Sun-like)
Radius 6.81 R⊕ · 550.3 ly
Kepler-561 b
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Kepler-857 b
Neptune-like · G-type yellow (Sun-like)
Radius 6.80 R⊕ · 3,207.8 ly