Key parameters at a glance
- A radius of 3.79 Earth radii
- A mass of 13.80 Earth masses
- Surface gravity around 0.96 g
- An orbital period of 8.780 days
- Semi-major axis 0.0787 AU
- Equilibrium temperature 713 K (440 °C)
- Distance from Earth 3,880.87 light-years
- Earth Similarity Index 0.300
- Travel time at Voyager 1 speed 68,439,051 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1793 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#60of 1978
top 3.0%
This planet
3.79R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-1793 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.79 | 11.21 |
| Mass (M⊕) | 1.00 | 13.80 | 317.83 |
| Density (g/cm³) | 5.51 | 1.39 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.96 | 2.53 |
| Insolation (S⊕) | 1.00 | 61.24 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 351070059
Gaia DR2
Gaia DR2 2053593189011583360
Gaia DR3
Gaia DR3 2053593189011583360
System
Kepler-1793
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 8.78 Earth days (2.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0787 AU.
Transit Fingerprint
Depth
0.076 %
Duration
3.220 h
Impact parameter b
0.938
Rp / R★
0.032200
Transit midpoint (BJD)
2,454,971.4838
Photometric dip
Transit produces a flux drop of 756 ppm lasting ≈ 3.22 h.
Extended Orbital Architecture
Planet / star radius ratio
0.032200
Semi-major axis / stellar radius
7.620
Impact parameter (b)
0.938
Transit mid-time (BJD)
2,454,971.4838
Angular separation (arcsec)
0.06610
Eq. Temperature
713K
(440 °C)
Insolation (S⊕)
61.24
Earth = 1.00
Earth Similarity (ESI)
0.300
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.
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-1793
Spectral Class
K-type orange
Effective Temperature
5,191 K — cooler than the Sun (5,778 K)
Estimated Age
3.60 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.764 R☉
Stellar Mass
0.850 M☉
Metallicity [Fe/H]
-0.06
Extended Stellar Properties
Surface gravity (log g)
4.597 dex
Stellar density
1.651 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.813 mas
Total Proper Motion
4.775 mas/yr
PM Right Ascension
-1.34 mas/yr
PM Declination
-4.58 mas/yr
Galactic Cartesian (pc)
x = 0.282 · y = -0.701 · z = 0.655
Equatorial (J2000)
RA 291.91295° · Dec 40.95393°
Galactic ℓ, b
73.456° · 11.134°
Ecliptic λ, β
306.408° · 61.652°
HTM-20 index
1647190684
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