Key parameters at a glance
- A radius of 2.78 Earth radii
- A mass of 8.15 Earth masses
- Surface gravity around 1.05 g
- An orbital period of 15.194 days
- Semi-major axis 0.1214 AU
- Equilibrium temperature 893 K (620 °C)
- Distance from Earth 4,921.97 light-years
- Earth Similarity Index 0.271
- Travel time at Voyager 1 speed 86,798,901 years
1 sibling around Kepler-799
Kepler-799 c 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 this | Sub-Neptune | 2.78 | 8.15 | 15.194 | 893 | 2021 |
| Kepler-799 b | Neptune-like | 6.88 | 37.90 | 133.461 | 433 | 2016 |
Kepler-799 c Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#766of 1978
top 38.7%
This planet
2.78R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-799 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.78 | 11.21 |
| Mass (M⊕) | 1.00 | 8.15 | 317.83 |
| Density (g/cm³) | 5.51 | 2.08 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.05 | 2.53 |
| Insolation (S⊕) | 1.00 | 150.25 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 158419284
System
Kepler-799
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 15.19 Earth days (4.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1214 AU.
Transit Fingerprint
Depth
0.037 %
Duration
3.106 h
Impact parameter b
0.895
Rp / R★
0.017417
Transit midpoint (BJD)
2,454,975.7342
Photometric dip
Transit produces a flux drop of 368 ppm lasting ≈ 3.11 h.
Extended Orbital Architecture
Planet / star radius ratio
0.017417
Semi-major axis / stellar radius
17.300
Impact parameter (b)
0.895
Transit mid-time (BJD)
2,454,975.7342
Angular separation (arcsec)
0.08040
Eq. Temperature
893K
(620 °C)
Insolation (S⊕)
150.25
Earth = 1.00
Earth Similarity (ESI)
0.271
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
Valizadegan et al. 2022Instrument
Kepler CCD Array
Publication
2022-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2021 at Kepler (12 shown).
Host System: Kepler-799
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,588 K — cooler than the Sun (5,778 K)
Estimated Age
0.50 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.593 R☉
Stellar Mass
1.031 M☉
Metallicity [Fe/H]
0.14
Extended Stellar Properties
Surface gravity (log g)
4.047 dex
Stellar density
0.450 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
Kepler-58 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.78 R⊕ · 3,161.3 ly
Kepler-24 e
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.78 R⊕ · 3,773.0 ly
Kepler-870 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.78 R⊕ · 4,107.8 ly
Kepler-894 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.78 R⊕ · 3,792.9 ly
TOI-1774.01
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.78 R⊕ · 176.0 ly
Kepler-1906 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.78 R⊕ · 4,437.8 ly