Key parameters at a glance
- A radius of 4.17 Earth radii
- A mass of 16.20 Earth masses
- Surface gravity around 0.93 g
- An orbital period of 11.679 days
- Semi-major axis 0.1021 AU
- Equilibrium temperature 830 K (557 °C)
- Distance from Earth 2,937.62 light-years
- Earth Similarity Index 0.247
- Travel time at Voyager 1 speed 51,804,844 years
2 siblings around Kepler-619
Kepler-619 d shares its host star with 2 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-619 c | Super-Earth | 1.69 | 3.50 | 1.208 | 1,767 | 2016 |
| Kepler-619 b | Sub-Neptune | 3.16 | 10.10 | 5.404 | 1,073 | 2016 |
| Kepler-619 d this | Neptune-like | 4.17 | 16.20 | 11.679 | 830 | 2023 |
Kepler-619 d Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#526of 574
top 91.5%
This planet
4.17R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | Kepler-619 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 4.17 | 11.21 |
| Mass (M⊕) | 1.00 | 16.20 | 317.83 |
| Density (g/cm³) | 5.51 | 1.23 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.93 | 2.53 |
| Insolation (S⊕) | 1.00 | 112.07 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 417659212
Gaia DR2
Gaia DR2 2129503235571760128
Gaia DR3
Gaia DR3 2129503235571760128
System
Kepler-619
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 11.68 Earth days (3.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1021 AU.
Transit Fingerprint
Depth
0.119 %
Duration
1.264 h
Impact parameter b
0.940
Rp / R★
0.039589
Transit midpoint (BJD)
2,454,964.5119
Photometric dip
Transit produces a flux drop of 1,185 ppm lasting ≈ 1.26 h.
Extended Orbital Architecture
Planet / star radius ratio
0.039589
Semi-major axis / stellar radius
31.400
Impact parameter (b)
0.940
Transit mid-time (BJD)
2,454,964.5119
Angular separation (arcsec)
0.11300
Eq. Temperature
830K
(557 °C)
Insolation (S⊕)
112.07
Earth = 1.00
Earth Similarity (ESI)
0.247
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. 2023Instrument
Kepler CCD Array
Publication
2023-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Kepler (12 shown).
Host System: Kepler-619
Spectral Class
F-type yellow-white
Effective Temperature
6,122 K — hotter than the Sun (5,778 K)
Estimated Age
0.78 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.964 R☉
Stellar Mass
1.041 M☉
Metallicity [Fe/H]
-0.18
Extended Stellar Properties
Surface gravity (log g)
4.487 dex
Stellar density
4.277 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.082 mas
Total Proper Motion
8.114 mas/yr
PM Right Ascension
-0.18 mas/yr
PM Declination
-8.11 mas/yr
Galactic Cartesian (pc)
x = 0.236 · y = -0.620 · z = 0.748
Equatorial (J2000)
RA 290.84909° · Dec 48.41598°
Galactic ℓ, b
80.050° · 15.009°
Ecliptic λ, β
311.017° · 68.905°
HTM-20 index
-395346124
Similar Worlds
Kepler-1326 b
Neptune-like · F-type yellow-white
Radius 4.18 R⊕ · 2,277.6 ly
Kepler-1715 b
Neptune-like · F-type yellow-white
Radius 4.14 R⊕ · 1,704.5 ly
Kepler-458 c
Neptune-like · F-type yellow-white
Radius 4.20 R⊕ · 5,201.3 ly
Kepler-279 e
Neptune-like · F-type yellow-white
Radius 4.13 R⊕ · 3,383.5 ly
Kepler-584 b
Neptune-like · F-type yellow-white
Radius 4.21 R⊕ · 6,030.1 ly
HD 28109 c
Neptune-like · F-type yellow-white
Radius 4.13 R⊕ · 455.3 ly