Key parameters at a glance
- A radius of 2.33 Earth radii
- A mass of 6.04 Earth masses
- Surface gravity around 1.11 g
- An orbital period of 7.054 days
- Semi-major axis 0.0690 AU
- Equilibrium temperature 840 K (567 °C)
- Distance from Earth 1,683.26 light-years
- Earth Similarity Index 0.309
- Travel time at Voyager 1 speed 29,684,262 years
1 sibling around Kepler-783
Kepler-783 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-783 b | Rocky Terrestrial | 0.78 | 0.40 | 4.293 | 991 | 2016 |
| Kepler-783 c this | Sub-Neptune | 2.33 | 6.04 | 7.054 | 840 | 2020 |
Kepler-783 c Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1450of 1978
top 73.3%
This planet
2.33R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-783 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.33 | 11.21 |
| Mass (M⊕) | 1.00 | 6.04 | 317.83 |
| Density (g/cm³) | 5.51 | 2.62 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.11 | 2.53 |
| Insolation (S⊕) | 1.00 | 113.30 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 159642390
Gaia DR2
Gaia DR2 2129164173675031936
Gaia DR3
Gaia DR3 2129164173675031936
System
Kepler-783
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 7.05 Earth days (1.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0690 AU.
Transit Fingerprint
Depth
0.052 %
Duration
1.724 h
Impact parameter b
0.920
Rp / R★
0.020968
Transit midpoint (BJD)
2,454,969.3573
Photometric dip
Transit produces a flux drop of 521 ppm lasting ≈ 1.72 h.
Extended Orbital Architecture
Planet / star radius ratio
0.020968
Semi-major axis / stellar radius
34.220
Impact parameter (b)
0.920
Transit mid-time (BJD)
2,454,969.3573
Angular separation (arcsec)
0.13400
Eq. Temperature
840K
(567 °C)
Insolation (S⊕)
113.30
Earth = 1.00
Earth Similarity (ESI)
0.309
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
Armstrong et al. 2021Instrument
Kepler CCD Array
Publication
2021-07
Observation locale
Space
Discovery cohort
Planets confirmed in 2020 at Kepler (12 shown).
Host System: Kepler-783
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,411 K — cooler than the Sun (5,778 K)
Estimated Age
9.70 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.872 R☉
Stellar Mass
0.940 M☉
Metallicity [Fe/H]
-0.03
Extended Stellar Properties
Surface gravity (log g)
4.530 dex
Stellar density
1.998 g/cm³
Metallicity ratio
[M/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.909 mas
Total Proper Motion
12.150 mas/yr
PM Right Ascension
-11.63 mas/yr
PM Declination
-3.50 mas/yr
Galactic Cartesian (pc)
x = 0.243 · y = -0.631 · z = 0.737
Equatorial (J2000)
RA 291.06286° · Dec 47.48479°
Galactic ℓ, b
79.234° · 14.494°
Ecliptic λ, β
310.394° · 67.991°
HTM-20 index
-29396692
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