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 7.329 days
- Semi-major axis 0.0689 AU
- Equilibrium temperature 807 K (534 °C)
- Distance from Earth 1,384.30 light-years
- Earth Similarity Index 0.322
- Travel time at Voyager 1 speed 24,412,083 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1983 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1451of 1978
top 73.3%
This planet
2.33R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-1983 b | 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 | 100.13 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 169078948
Gaia DR2
Gaia DR2 2073697660354300544
Gaia DR3
Gaia DR3 2073697660354300544
System
Kepler-1983
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 7.33 Earth days (2.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0689 AU.
Transit Fingerprint
Depth
0.028 %
Duration
1.211 h
Impact parameter b
0.983
Rp / R★
0.024449
Transit midpoint (BJD)
2,454,965.1286
Photometric dip
Transit produces a flux drop of 278 ppm lasting ≈ 1.21 h.
Extended Orbital Architecture
Planet / star radius ratio
0.024449
Semi-major axis / stellar radius
13.310
Impact parameter (b)
0.983
Transit mid-time (BJD)
2,454,965.1286
Angular separation (arcsec)
0.16200
Eq. Temperature
807K
(534 °C)
Insolation (S⊕)
100.13
Earth = 1.00
Earth Similarity (ESI)
0.322
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. 2023Instrument
Kepler CCD Array
Publication
2023-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Kepler (12 shown).
Host System: Kepler-1983
Spectral Class
K-type orange
Effective Temperature
5,135 K — cooler than the Sun (5,778 K)
Estimated Age
13.70 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.874 R☉
Stellar Mass
0.812 M☉
Metallicity [Fe/H]
0.12
Extended Stellar Properties
Surface gravity (log g)
4.464 dex
Stellar density
0.831 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.327 mas
Total Proper Motion
9.675 mas/yr
PM Right Ascension
-7.52 mas/yr
PM Declination
-6.08 mas/yr
Galactic Cartesian (pc)
x = 0.349 · y = -0.683 · z = 0.642
Equatorial (J2000)
RA 297.04202° · Dec 39.91219°
Galactic ℓ, b
74.380° · 7.199°
Ecliptic λ, β
313.179° · 59.364°
HTM-20 index
-1303519114
Similar Worlds
Kepler-241 b
Sub-Neptune · K-type orange
Radius 2.33 R⊕ · 1,669.9 ly
Kepler-287 b
Sub-Neptune · K-type orange
Radius 2.33 R⊕ · 2,726.2 ly
Kepler-443 b
Sub-Neptune · K-type orange
Radius 2.33 R⊕ · 2,616.7 ly
Kepler-436 c
Sub-Neptune · K-type orange
Radius 2.33 R⊕ · 1,920.6 ly
Kepler-239 b
Sub-Neptune · K-type orange
Radius 2.33 R⊕ · 2,113.8 ly
Kepler-1802 c
Sub-Neptune · K-type orange
Radius 2.32 R⊕ · 2,076.6 ly